1093 lines
39 KiB
C
1093 lines
39 KiB
C
/*
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* Copyright (c) 2015-present, Yann Collet, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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*/
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/*-************************************
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* Dependencies
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**************************************/
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#include "util.h" /* Compiler options, UTIL_GetFileSize */
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#include <stdlib.h> /* malloc */
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#include <stdio.h> /* fprintf, fopen, ftello64 */
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#include <string.h> /* strcmp */
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#include <math.h> /* log */
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#include <time.h>
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#include <assert.h>
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#include "mem.h"
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#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_parameters, ZSTD_estimateCCtxSize */
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#include "zstd.h"
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#include "datagen.h"
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#include "xxhash.h"
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#include "util.h"
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/*-************************************
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* Constants
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**************************************/
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#define PROGRAM_DESCRIPTION "ZSTD parameters tester"
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#define AUTHOR "Yann Collet"
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#define WELCOME_MESSAGE "*** %s %s %i-bits, by %s ***\n", PROGRAM_DESCRIPTION, ZSTD_VERSION_STRING, (int)(sizeof(void*)*8), AUTHOR
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#define KB *(1<<10)
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#define MB *(1<<20)
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#define GB *(1ULL<<30)
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#define NBLOOPS 2
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#define TIMELOOP (2 * SEC_TO_MICRO)
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#define NB_LEVELS_TRACKED 22 /* ensured being >= ZSTD_maxCLevel() in BMK_init_level_constraints() */
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static const size_t maxMemory = (sizeof(size_t)==4) ? (2 GB - 64 MB) : (size_t)(1ULL << ((sizeof(size_t)*8)-31));
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#define COMPRESSIBILITY_DEFAULT 0.50
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static const double g_grillDuration_s = 99999; /* about 27 hours */
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static const U64 g_maxParamTime = 15 * SEC_TO_MICRO;
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static const U64 g_maxVariationTime = 60 * SEC_TO_MICRO;
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static const int g_maxNbVariations = 64;
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/*-************************************
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* Macros
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**************************************/
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#define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
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#undef MIN
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#undef MAX
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#define MIN(a,b) ( (a) < (b) ? (a) : (b) )
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#define MAX(a,b) ( (a) > (b) ? (a) : (b) )
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/*-************************************
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* Benchmark Parameters
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**************************************/
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static U32 g_nbIterations = NBLOOPS;
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static double g_compressibility = COMPRESSIBILITY_DEFAULT;
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static U32 g_blockSize = 0;
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static U32 g_rand = 1;
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static U32 g_singleRun = 0;
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static U32 g_target = 0;
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static U32 g_noSeed = 0;
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static ZSTD_compressionParameters g_params = { 0, 0, 0, 0, 0, 0, ZSTD_greedy };
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void BMK_SetNbIterations(int nbLoops)
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{
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g_nbIterations = nbLoops;
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DISPLAY("- %u iterations -\n", g_nbIterations);
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}
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/*-*******************************************************
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* Private functions
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*********************************************************/
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/* accuracy in seconds only, span can be multiple years */
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static double BMK_timeSpan(time_t tStart) { return difftime(time(NULL), tStart); }
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static size_t BMK_findMaxMem(U64 requiredMem)
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{
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size_t const step = 64 MB;
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void* testmem = NULL;
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requiredMem = (((requiredMem >> 26) + 1) << 26);
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if (requiredMem > maxMemory) requiredMem = maxMemory;
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requiredMem += 2*step;
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while (!testmem) {
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requiredMem -= step;
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testmem = malloc ((size_t)requiredMem);
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}
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free (testmem);
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return (size_t) (requiredMem - step);
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}
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static U32 FUZ_rotl32(U32 x, U32 r)
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{
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return ((x << r) | (x >> (32 - r)));
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}
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U32 FUZ_rand(U32* src)
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{
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const U32 prime1 = 2654435761U;
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const U32 prime2 = 2246822519U;
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U32 rand32 = *src;
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rand32 *= prime1;
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rand32 += prime2;
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rand32 = FUZ_rotl32(rand32, 13);
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*src = rand32;
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return rand32 >> 5;
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}
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/*-*******************************************************
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* Bench functions
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*********************************************************/
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typedef struct {
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size_t cSize;
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double cSpeed; /* bytes / sec */
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double dSpeed;
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} BMK_result_t;
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typedef struct
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{
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const char* srcPtr;
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size_t srcSize;
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char* cPtr;
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size_t cRoom;
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size_t cSize;
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char* resPtr;
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size_t resSize;
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} blockParam_t;
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static size_t
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BMK_benchParam(BMK_result_t* resultPtr,
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const void* srcBuffer, size_t srcSize,
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ZSTD_CCtx* ctx,
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const ZSTD_compressionParameters cParams)
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{
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const size_t blockSize = g_blockSize ? g_blockSize : srcSize;
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const U32 nbBlocks = (U32) ((srcSize + (blockSize-1)) / blockSize);
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blockParam_t* const blockTable = (blockParam_t*) malloc(nbBlocks * sizeof(blockParam_t));
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const size_t maxCompressedSize = (size_t)nbBlocks * ZSTD_compressBound(blockSize);
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void* const compressedBuffer = malloc(maxCompressedSize);
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void* const resultBuffer = malloc(srcSize);
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ZSTD_parameters params;
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U32 Wlog = cParams.windowLog;
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U32 Clog = cParams.chainLog;
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U32 Hlog = cParams.hashLog;
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U32 Slog = cParams.searchLog;
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U32 Slength = cParams.searchLength;
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U32 Tlength = cParams.targetLength;
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ZSTD_strategy strat = cParams.strategy;
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char name[30] = { 0 };
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U64 crcOrig;
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/* init result for early exit */
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resultPtr->cSize = srcSize;
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resultPtr->cSpeed = 0.;
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resultPtr->dSpeed = 0.;
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/* Memory allocation & restrictions */
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snprintf(name, 30, "Sw%02uc%02uh%02us%02ul%1ut%03uS%1u", Wlog, Clog, Hlog, Slog, Slength, Tlength, strat);
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if (!compressedBuffer || !resultBuffer || !blockTable) {
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DISPLAY("\nError: not enough memory!\n");
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free(compressedBuffer);
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free(resultBuffer);
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free(blockTable);
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return 12;
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}
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/* Calculating input Checksum */
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crcOrig = XXH64(srcBuffer, srcSize, 0);
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/* Init blockTable data */
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{ U32 i;
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size_t remaining = srcSize;
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const char* srcPtr = (const char*)srcBuffer;
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char* cPtr = (char*)compressedBuffer;
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char* resPtr = (char*)resultBuffer;
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for (i=0; i<nbBlocks; i++) {
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size_t thisBlockSize = MIN(remaining, blockSize);
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blockTable[i].srcPtr = srcPtr;
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blockTable[i].cPtr = cPtr;
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blockTable[i].resPtr = resPtr;
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blockTable[i].srcSize = thisBlockSize;
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blockTable[i].cRoom = ZSTD_compressBound(thisBlockSize);
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srcPtr += thisBlockSize;
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cPtr += blockTable[i].cRoom;
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resPtr += thisBlockSize;
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remaining -= thisBlockSize;
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} }
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/* warmimg up memory */
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RDG_genBuffer(compressedBuffer, maxCompressedSize, 0.10, 0.10, 1);
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/* Bench */
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{ U32 loopNb;
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size_t cSize = 0;
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double fastestC = 100000000., fastestD = 100000000.;
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double ratio = 0.;
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UTIL_time_t const benchStart = UTIL_getTime();
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DISPLAY("\r%79s\r", "");
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memset(¶ms, 0, sizeof(params));
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params.cParams = cParams;
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for (loopNb = 1; loopNb <= g_nbIterations; loopNb++) {
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int nbLoops;
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U32 blockNb;
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UTIL_time_t roundStart;
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U64 roundClock;
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{ U64 const benchTime = UTIL_clockSpanMicro(benchStart);
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if (benchTime > g_maxParamTime) break; }
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/* Compression */
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DISPLAY("\r%1u-%s : %9u ->", loopNb, name, (U32)srcSize);
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memset(compressedBuffer, 0xE5, maxCompressedSize);
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nbLoops = 0;
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UTIL_waitForNextTick();
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roundStart = UTIL_getTime();
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while (UTIL_clockSpanMicro(roundStart) < TIMELOOP) {
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for (blockNb=0; blockNb<nbBlocks; blockNb++)
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blockTable[blockNb].cSize = ZSTD_compress_advanced(ctx,
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blockTable[blockNb].cPtr, blockTable[blockNb].cRoom,
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blockTable[blockNb].srcPtr, blockTable[blockNb].srcSize,
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NULL, 0,
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params);
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nbLoops++;
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}
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roundClock = UTIL_clockSpanMicro(roundStart);
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cSize = 0;
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for (blockNb=0; blockNb<nbBlocks; blockNb++)
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cSize += blockTable[blockNb].cSize;
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ratio = (double)srcSize / (double)cSize;
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if ((double)roundClock < fastestC * SEC_TO_MICRO * nbLoops) fastestC = ((double)roundClock / SEC_TO_MICRO) / nbLoops;
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DISPLAY("\r");
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DISPLAY("%1u-%s : %9u ->", loopNb, name, (U32)srcSize);
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DISPLAY(" %9u (%4.3f),%7.1f MB/s", (U32)cSize, ratio, (double)srcSize / fastestC / 1000000.);
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resultPtr->cSize = cSize;
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resultPtr->cSpeed = (double)srcSize / fastestC;
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#if 1
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/* Decompression */
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memset(resultBuffer, 0xD6, srcSize);
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nbLoops = 0;
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UTIL_waitForNextTick();
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roundStart = UTIL_getTime();
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for ( ; UTIL_clockSpanMicro(roundStart) < TIMELOOP; nbLoops++) {
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for (blockNb=0; blockNb<nbBlocks; blockNb++)
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blockTable[blockNb].resSize = ZSTD_decompress(blockTable[blockNb].resPtr, blockTable[blockNb].srcSize,
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blockTable[blockNb].cPtr, blockTable[blockNb].cSize);
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}
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roundClock = UTIL_clockSpanMicro(roundStart);
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if ((double)roundClock < fastestD * SEC_TO_MICRO * nbLoops) fastestD = ((double)roundClock / SEC_TO_MICRO) / nbLoops;
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DISPLAY("\r");
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DISPLAY("%1u-%s : %9u -> ", loopNb, name, (U32)srcSize);
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DISPLAY("%9u (%4.3f),%7.1f MB/s, ", (U32)cSize, ratio, (double)srcSize / fastestC / 1000000.);
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DISPLAY("%7.1f MB/s", (double)srcSize / fastestD / 1000000.);
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resultPtr->dSpeed = (double)srcSize / fastestD;
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/* CRC Checking */
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{ U64 const crcCheck = XXH64(resultBuffer, srcSize, 0);
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if (crcOrig!=crcCheck) {
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unsigned u;
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unsigned eBlockSize = (unsigned)(MIN(65536*2, blockSize));
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DISPLAY("\n!!! WARNING !!! Invalid Checksum : %x != %x\n", (unsigned)crcOrig, (unsigned)crcCheck);
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for (u=0; u<srcSize; u++) {
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if (((const BYTE*)srcBuffer)[u] != ((BYTE*)resultBuffer)[u]) {
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printf("Decoding error at pos %u (block %u, pos %u) \n", u, u / eBlockSize, u % eBlockSize);
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break;
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} }
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break;
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} }
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#endif
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} }
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/* End cleaning */
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DISPLAY("\r");
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free(compressedBuffer);
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free(resultBuffer);
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return 0;
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}
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const char* g_stratName[ZSTD_btultra+1] = {
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"(none) ", "ZSTD_fast ", "ZSTD_dfast ",
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"ZSTD_greedy ", "ZSTD_lazy ", "ZSTD_lazy2 ",
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"ZSTD_btlazy2 ", "ZSTD_btopt ", "ZSTD_btultra "};
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static void BMK_printWinner(FILE* f, U32 cLevel, BMK_result_t result, ZSTD_compressionParameters params, size_t srcSize)
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{
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DISPLAY("\r%79s\r", "");
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fprintf(f," {%3u,%3u,%3u,%3u,%3u,%3u, %s }, ",
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params.windowLog, params.chainLog, params.hashLog, params.searchLog, params.searchLength,
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params.targetLength, g_stratName[(U32)(params.strategy)]);
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fprintf(f,
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"/* level %2u */ /* R:%5.3f at %5.1f MB/s - %5.1f MB/s */\n",
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cLevel, (double)srcSize / result.cSize, result.cSpeed / 1000000., result.dSpeed / 1000000.);
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}
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typedef struct {
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BMK_result_t result;
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ZSTD_compressionParameters params;
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} winnerInfo_t;
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static void BMK_printWinners2(FILE* f, const winnerInfo_t* winners, size_t srcSize)
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{
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int cLevel;
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fprintf(f, "\n /* Proposed configurations : */ \n");
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fprintf(f, " /* W, C, H, S, L, T, strat */ \n");
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for (cLevel=0; cLevel <= NB_LEVELS_TRACKED; cLevel++)
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BMK_printWinner(f, cLevel, winners[cLevel].result, winners[cLevel].params, srcSize);
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}
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static void BMK_printWinners(FILE* f, const winnerInfo_t* winners, size_t srcSize)
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{
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fseek(f, 0, SEEK_SET);
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BMK_printWinners2(f, winners, srcSize);
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fflush(f);
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BMK_printWinners2(stdout, winners, srcSize);
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}
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typedef struct {
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double cSpeed_min;
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double dSpeed_min;
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U32 windowLog_max;
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ZSTD_strategy strategy_max;
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} level_constraints_t;
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static level_constraints_t g_level_constraint[NB_LEVELS_TRACKED+1];
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static void BMK_init_level_constraints(int bytePerSec_level1)
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{
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assert(NB_LEVELS_TRACKED >= ZSTD_maxCLevel());
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memset(g_level_constraint, 0, sizeof(g_level_constraint));
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g_level_constraint[1].cSpeed_min = bytePerSec_level1;
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g_level_constraint[1].dSpeed_min = 0.;
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g_level_constraint[1].windowLog_max = 19;
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g_level_constraint[1].strategy_max = ZSTD_fast;
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/* establish speed objectives (relative to level 1) */
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{ int l;
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for (l=2; l<=NB_LEVELS_TRACKED; l++) {
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g_level_constraint[l].cSpeed_min = (g_level_constraint[l-1].cSpeed_min * 49) / 64;
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g_level_constraint[l].dSpeed_min = 0.;
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g_level_constraint[l].windowLog_max = (l<20) ? 23 : l+5; /* only --ultra levels >= 20 can use windowlog > 23 */
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g_level_constraint[l].strategy_max = (l<19) ? ZSTD_btopt : ZSTD_btultra; /* level 19 is allowed to use btultra */
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} }
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}
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static int BMK_seed(winnerInfo_t* winners, const ZSTD_compressionParameters params,
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const void* srcBuffer, size_t srcSize,
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ZSTD_CCtx* ctx)
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{
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BMK_result_t testResult;
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int better = 0;
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int cLevel;
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BMK_benchParam(&testResult, srcBuffer, srcSize, ctx, params);
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for (cLevel = 1; cLevel <= NB_LEVELS_TRACKED; cLevel++) {
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if (testResult.cSpeed < g_level_constraint[cLevel].cSpeed_min)
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continue; /* not fast enough for this level */
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if (testResult.dSpeed < g_level_constraint[cLevel].dSpeed_min)
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continue; /* not fast enough for this level */
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if (params.windowLog > g_level_constraint[cLevel].windowLog_max)
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continue; /* too much memory for this level */
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if (params.strategy > g_level_constraint[cLevel].strategy_max)
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continue; /* forbidden strategy for this level */
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if (winners[cLevel].result.cSize==0) {
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/* first solution for this cLevel */
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winners[cLevel].result = testResult;
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winners[cLevel].params = params;
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BMK_printWinner(stdout, cLevel, testResult, params, srcSize);
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better = 1;
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continue;
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}
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if ((double)testResult.cSize <= ((double)winners[cLevel].result.cSize * (1. + (0.02 / cLevel))) ) {
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/* Validate solution is "good enough" */
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double W_ratio = (double)srcSize / testResult.cSize;
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double O_ratio = (double)srcSize / winners[cLevel].result.cSize;
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double W_ratioNote = log (W_ratio);
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double O_ratioNote = log (O_ratio);
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size_t W_DMemUsed = (1 << params.windowLog) + (16 KB);
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size_t O_DMemUsed = (1 << winners[cLevel].params.windowLog) + (16 KB);
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double W_DMemUsed_note = W_ratioNote * ( 40 + 9*cLevel) - log((double)W_DMemUsed);
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double O_DMemUsed_note = O_ratioNote * ( 40 + 9*cLevel) - log((double)O_DMemUsed);
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size_t W_CMemUsed = (1 << params.windowLog) + ZSTD_estimateCCtxSize_usingCParams(params);
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size_t O_CMemUsed = (1 << winners[cLevel].params.windowLog) + ZSTD_estimateCCtxSize_usingCParams(winners[cLevel].params);
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double W_CMemUsed_note = W_ratioNote * ( 50 + 13*cLevel) - log((double)W_CMemUsed);
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double O_CMemUsed_note = O_ratioNote * ( 50 + 13*cLevel) - log((double)O_CMemUsed);
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double W_CSpeed_note = W_ratioNote * ( 30 + 10*cLevel) + log(testResult.cSpeed);
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double O_CSpeed_note = O_ratioNote * ( 30 + 10*cLevel) + log(winners[cLevel].result.cSpeed);
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double W_DSpeed_note = W_ratioNote * ( 20 + 2*cLevel) + log(testResult.dSpeed);
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double O_DSpeed_note = O_ratioNote * ( 20 + 2*cLevel) + log(winners[cLevel].result.dSpeed);
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if (W_DMemUsed_note < O_DMemUsed_note) {
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/* uses too much Decompression memory for too little benefit */
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if (W_ratio > O_ratio)
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DISPLAY ("Decompression Memory : %5.3f @ %4.1f MB vs %5.3f @ %4.1f MB : not enough for level %i\n",
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W_ratio, (double)(W_DMemUsed) / 1024 / 1024,
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O_ratio, (double)(O_DMemUsed) / 1024 / 1024, cLevel);
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continue;
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}
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if (W_CMemUsed_note < O_CMemUsed_note) {
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/* uses too much memory for compression for too little benefit */
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if (W_ratio > O_ratio)
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DISPLAY ("Compression Memory : %5.3f @ %4.1f MB vs %5.3f @ %4.1f MB : not enough for level %i\n",
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W_ratio, (double)(W_CMemUsed) / 1024 / 1024,
|
|
O_ratio, (double)(O_CMemUsed) / 1024 / 1024, cLevel);
|
|
continue;
|
|
}
|
|
if (W_CSpeed_note < O_CSpeed_note ) {
|
|
/* too large compression speed difference for the compression benefit */
|
|
if (W_ratio > O_ratio)
|
|
DISPLAY ("Compression Speed : %5.3f @ %4.1f MB/s vs %5.3f @ %4.1f MB/s : not enough for level %i\n",
|
|
W_ratio, testResult.cSpeed / 1000000,
|
|
O_ratio, winners[cLevel].result.cSpeed / 1000000., cLevel);
|
|
continue;
|
|
}
|
|
if (W_DSpeed_note < O_DSpeed_note ) {
|
|
/* too large decompression speed difference for the compression benefit */
|
|
if (W_ratio > O_ratio)
|
|
DISPLAY ("Decompression Speed : %5.3f @ %4.1f MB/s vs %5.3f @ %4.1f MB/s : not enough for level %i\n",
|
|
W_ratio, testResult.dSpeed / 1000000.,
|
|
O_ratio, winners[cLevel].result.dSpeed / 1000000., cLevel);
|
|
continue;
|
|
}
|
|
|
|
if (W_ratio < O_ratio)
|
|
DISPLAY("Solution %4.3f selected over %4.3f at level %i, due to better secondary statistics \n", W_ratio, O_ratio, cLevel);
|
|
|
|
winners[cLevel].result = testResult;
|
|
winners[cLevel].params = params;
|
|
BMK_printWinner(stdout, cLevel, testResult, params, srcSize);
|
|
|
|
better = 1;
|
|
} }
|
|
|
|
return better;
|
|
}
|
|
|
|
|
|
/* nullified useless params, to ensure count stats */
|
|
static ZSTD_compressionParameters* sanitizeParams(ZSTD_compressionParameters params)
|
|
{
|
|
g_params = params;
|
|
if (params.strategy == ZSTD_fast)
|
|
g_params.chainLog = 0, g_params.searchLog = 0;
|
|
if (params.strategy == ZSTD_dfast)
|
|
g_params.searchLog = 0;
|
|
if (params.strategy != ZSTD_btopt && params.strategy != ZSTD_btultra)
|
|
g_params.targetLength = 0;
|
|
return &g_params;
|
|
}
|
|
|
|
|
|
static void paramVariation(ZSTD_compressionParameters* ptr)
|
|
{
|
|
ZSTD_compressionParameters p;
|
|
U32 validated = 0;
|
|
while (!validated) {
|
|
U32 nbChanges = (FUZ_rand(&g_rand) & 3) + 1;
|
|
p = *ptr;
|
|
for ( ; nbChanges ; nbChanges--) {
|
|
const U32 changeID = FUZ_rand(&g_rand) % 14;
|
|
switch(changeID)
|
|
{
|
|
case 0:
|
|
p.chainLog++; break;
|
|
case 1:
|
|
p.chainLog--; break;
|
|
case 2:
|
|
p.hashLog++; break;
|
|
case 3:
|
|
p.hashLog--; break;
|
|
case 4:
|
|
p.searchLog++; break;
|
|
case 5:
|
|
p.searchLog--; break;
|
|
case 6:
|
|
p.windowLog++; break;
|
|
case 7:
|
|
p.windowLog--; break;
|
|
case 8:
|
|
p.searchLength++; break;
|
|
case 9:
|
|
p.searchLength--; break;
|
|
case 10:
|
|
p.strategy = (ZSTD_strategy)(((U32)p.strategy)+1); break;
|
|
case 11:
|
|
p.strategy = (ZSTD_strategy)(((U32)p.strategy)-1); break;
|
|
case 12:
|
|
p.targetLength *= 1 + ((double)(FUZ_rand(&g_rand)&255)) / 256.; break;
|
|
case 13:
|
|
p.targetLength /= 1 + ((double)(FUZ_rand(&g_rand)&255)) / 256.; break;
|
|
}
|
|
}
|
|
validated = !ZSTD_isError(ZSTD_checkCParams(p));
|
|
}
|
|
*ptr = p;
|
|
}
|
|
|
|
|
|
#define PARAMTABLELOG 25
|
|
#define PARAMTABLESIZE (1<<PARAMTABLELOG)
|
|
#define PARAMTABLEMASK (PARAMTABLESIZE-1)
|
|
static BYTE g_alreadyTested[PARAMTABLESIZE] = {0}; /* init to zero */
|
|
|
|
#define NB_TESTS_PLAYED(p) \
|
|
g_alreadyTested[(XXH64(sanitizeParams(p), sizeof(p), 0) >> 3) & PARAMTABLEMASK]
|
|
|
|
|
|
static void playAround(FILE* f, winnerInfo_t* winners,
|
|
ZSTD_compressionParameters params,
|
|
const void* srcBuffer, size_t srcSize,
|
|
ZSTD_CCtx* ctx)
|
|
{
|
|
int nbVariations = 0;
|
|
UTIL_time_t const clockStart = UTIL_getTime();
|
|
|
|
while (UTIL_clockSpanMicro(clockStart) < g_maxVariationTime) {
|
|
ZSTD_compressionParameters p = params;
|
|
|
|
if (nbVariations++ > g_maxNbVariations) break;
|
|
paramVariation(&p);
|
|
|
|
/* exclude faster if already played params */
|
|
if (FUZ_rand(&g_rand) & ((1 << NB_TESTS_PLAYED(p))-1))
|
|
continue;
|
|
|
|
/* test */
|
|
NB_TESTS_PLAYED(p)++;
|
|
if (!BMK_seed(winners, p, srcBuffer, srcSize, ctx)) continue;
|
|
|
|
/* improvement found => search more */
|
|
BMK_printWinners(f, winners, srcSize);
|
|
playAround(f, winners, p, srcBuffer, srcSize, ctx);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
static ZSTD_compressionParameters randomParams(void)
|
|
{
|
|
ZSTD_compressionParameters p;
|
|
U32 validated = 0;
|
|
while (!validated) {
|
|
/* totally random entry */
|
|
p.chainLog = (FUZ_rand(&g_rand) % (ZSTD_CHAINLOG_MAX+1 - ZSTD_CHAINLOG_MIN)) + ZSTD_CHAINLOG_MIN;
|
|
p.hashLog = (FUZ_rand(&g_rand) % (ZSTD_HASHLOG_MAX+1 - ZSTD_HASHLOG_MIN)) + ZSTD_HASHLOG_MIN;
|
|
p.searchLog = (FUZ_rand(&g_rand) % (ZSTD_SEARCHLOG_MAX+1 - ZSTD_SEARCHLOG_MIN)) + ZSTD_SEARCHLOG_MIN;
|
|
p.windowLog = (FUZ_rand(&g_rand) % (ZSTD_WINDOWLOG_MAX+1 - ZSTD_WINDOWLOG_MIN)) + ZSTD_WINDOWLOG_MIN;
|
|
p.searchLength=(FUZ_rand(&g_rand) % (ZSTD_SEARCHLENGTH_MAX+1 - ZSTD_SEARCHLENGTH_MIN)) + ZSTD_SEARCHLENGTH_MIN;
|
|
p.targetLength=(FUZ_rand(&g_rand) % (512)) + ZSTD_TARGETLENGTH_MIN;
|
|
p.strategy = (ZSTD_strategy) (FUZ_rand(&g_rand) % (ZSTD_btultra +1));
|
|
validated = !ZSTD_isError(ZSTD_checkCParams(p));
|
|
}
|
|
return p;
|
|
}
|
|
|
|
static void BMK_selectRandomStart(
|
|
FILE* f, winnerInfo_t* winners,
|
|
const void* srcBuffer, size_t srcSize,
|
|
ZSTD_CCtx* ctx)
|
|
{
|
|
U32 const id = FUZ_rand(&g_rand) % (NB_LEVELS_TRACKED+1);
|
|
if ((id==0) || (winners[id].params.windowLog==0)) {
|
|
/* use some random entry */
|
|
ZSTD_compressionParameters const p = ZSTD_adjustCParams(randomParams(), srcSize, 0);
|
|
playAround(f, winners, p, srcBuffer, srcSize, ctx);
|
|
} else {
|
|
playAround(f, winners, winners[id].params, srcBuffer, srcSize, ctx);
|
|
}
|
|
}
|
|
|
|
|
|
static void BMK_benchOnce(ZSTD_CCtx* cctx, const void* srcBuffer, size_t srcSize)
|
|
{
|
|
BMK_result_t testResult;
|
|
g_params = ZSTD_adjustCParams(g_params, srcSize, 0);
|
|
BMK_benchParam(&testResult, srcBuffer, srcSize, cctx, g_params);
|
|
DISPLAY("\n");
|
|
return;
|
|
}
|
|
|
|
static void BMK_benchFullTable(ZSTD_CCtx* cctx, const void* srcBuffer, size_t srcSize)
|
|
{
|
|
ZSTD_compressionParameters params;
|
|
winnerInfo_t winners[NB_LEVELS_TRACKED+1];
|
|
const char* const rfName = "grillResults.txt";
|
|
FILE* const f = fopen(rfName, "w");
|
|
const size_t blockSize = g_blockSize ? g_blockSize : srcSize; /* cut by block or not ? */
|
|
|
|
/* init */
|
|
assert(g_singleRun==0);
|
|
memset(winners, 0, sizeof(winners));
|
|
if (f==NULL) { DISPLAY("error opening %s \n", rfName); exit(1); }
|
|
|
|
if (g_target) {
|
|
BMK_init_level_constraints(g_target*1000000);
|
|
} else {
|
|
/* baseline config for level 1 */
|
|
ZSTD_compressionParameters const l1params = ZSTD_getCParams(1, blockSize, 0);
|
|
BMK_result_t testResult;
|
|
BMK_benchParam(&testResult, srcBuffer, srcSize, cctx, l1params);
|
|
BMK_init_level_constraints((int)((testResult.cSpeed * 31) / 32));
|
|
}
|
|
|
|
/* populate initial solution */
|
|
{ const int maxSeeds = g_noSeed ? 1 : ZSTD_maxCLevel();
|
|
int i;
|
|
for (i=0; i<=maxSeeds; i++) {
|
|
params = ZSTD_getCParams(i, blockSize, 0);
|
|
BMK_seed(winners, params, srcBuffer, srcSize, cctx);
|
|
} }
|
|
BMK_printWinners(f, winners, srcSize);
|
|
|
|
/* start tests */
|
|
{ const time_t grillStart = time(NULL);
|
|
do {
|
|
BMK_selectRandomStart(f, winners, srcBuffer, srcSize, cctx);
|
|
} while (BMK_timeSpan(grillStart) < g_grillDuration_s);
|
|
}
|
|
|
|
/* end summary */
|
|
BMK_printWinners(f, winners, srcSize);
|
|
DISPLAY("grillParams operations completed \n");
|
|
|
|
/* clean up*/
|
|
fclose(f);
|
|
}
|
|
|
|
static void BMK_benchMem_usingCCtx(ZSTD_CCtx* cctx, const void* srcBuffer, size_t srcSize)
|
|
{
|
|
if (g_singleRun)
|
|
return BMK_benchOnce(cctx, srcBuffer, srcSize);
|
|
else
|
|
return BMK_benchFullTable(cctx, srcBuffer, srcSize);
|
|
}
|
|
|
|
static void BMK_benchMem(const void* srcBuffer, size_t srcSize)
|
|
{
|
|
ZSTD_CCtx* const cctx = ZSTD_createCCtx();
|
|
if (cctx==NULL) { DISPLAY("ZSTD_createCCtx() failed \n"); exit(1); }
|
|
BMK_benchMem_usingCCtx(cctx, srcBuffer, srcSize);
|
|
ZSTD_freeCCtx(cctx);
|
|
}
|
|
|
|
|
|
static int benchSample(void)
|
|
{
|
|
const char* const name = "Sample 10MB";
|
|
size_t const benchedSize = 10000000;
|
|
|
|
void* origBuff = malloc(benchedSize);
|
|
if (!origBuff) { perror("not enough memory"); return 12; }
|
|
|
|
/* Fill buffer */
|
|
RDG_genBuffer(origBuff, benchedSize, g_compressibility, 0.0, 0);
|
|
|
|
/* bench */
|
|
DISPLAY("\r%79s\r", "");
|
|
DISPLAY("using %s %i%%: \n", name, (int)(g_compressibility*100));
|
|
BMK_benchMem(origBuff, benchedSize);
|
|
|
|
free(origBuff);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* benchFiles() :
|
|
* note: while this function takes a table of filenames,
|
|
* in practice, only the first filename will be used */
|
|
int benchFiles(const char** fileNamesTable, int nbFiles)
|
|
{
|
|
int fileIdx=0;
|
|
|
|
/* Loop for each file */
|
|
while (fileIdx<nbFiles) {
|
|
const char* const inFileName = fileNamesTable[fileIdx++];
|
|
FILE* const inFile = fopen( inFileName, "rb" );
|
|
U64 const inFileSize = UTIL_getFileSize(inFileName);
|
|
size_t benchedSize;
|
|
void* origBuff;
|
|
|
|
/* Check file existence */
|
|
if (inFile==NULL) {
|
|
DISPLAY( "Pb opening %s\n", inFileName);
|
|
return 11;
|
|
}
|
|
if (inFileSize == UTIL_FILESIZE_UNKNOWN) {
|
|
DISPLAY("Pb evaluating size of %s \n", inFileName);
|
|
fclose(inFile);
|
|
return 11;
|
|
}
|
|
|
|
/* Memory allocation */
|
|
benchedSize = BMK_findMaxMem(inFileSize*3) / 3;
|
|
if ((U64)benchedSize > inFileSize) benchedSize = (size_t)inFileSize;
|
|
if (benchedSize < inFileSize)
|
|
DISPLAY("Not enough memory for '%s' full size; testing %i MB only...\n", inFileName, (int)(benchedSize>>20));
|
|
origBuff = malloc(benchedSize);
|
|
if (origBuff==NULL) {
|
|
DISPLAY("\nError: not enough memory!\n");
|
|
fclose(inFile);
|
|
return 12;
|
|
}
|
|
|
|
/* Fill input buffer */
|
|
DISPLAY("Loading %s... \r", inFileName);
|
|
{ size_t const readSize = fread(origBuff, 1, benchedSize, inFile);
|
|
fclose(inFile);
|
|
if(readSize != benchedSize) {
|
|
DISPLAY("\nError: problem reading file '%s' !! \n", inFileName);
|
|
free(origBuff);
|
|
return 13;
|
|
} }
|
|
|
|
/* bench */
|
|
DISPLAY("\r%79s\r", "");
|
|
DISPLAY("using %s : \n", inFileName);
|
|
BMK_benchMem(origBuff, benchedSize);
|
|
|
|
/* clean */
|
|
free(origBuff);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void BMK_translateAdvancedParams(ZSTD_compressionParameters params)
|
|
{
|
|
DISPLAY("--zstd=windowLog=%u,chainLog=%u,hashLog=%u,searchLog=%u,searchLength=%u,targetLength=%u,strategy=%u \n",
|
|
params.windowLog, params.chainLog, params.hashLog, params.searchLog, params.searchLength, params.targetLength, (U32)(params.strategy));
|
|
}
|
|
|
|
/* optimizeForSize():
|
|
* targetSpeed : expressed in MB/s */
|
|
int optimizeForSize(const char* inFileName, U32 targetSpeed)
|
|
{
|
|
FILE* const inFile = fopen( inFileName, "rb" );
|
|
U64 const inFileSize = UTIL_getFileSize(inFileName);
|
|
size_t benchedSize = BMK_findMaxMem(inFileSize*3) / 3;
|
|
void* origBuff;
|
|
|
|
/* Init */
|
|
if (inFile==NULL) { DISPLAY( "Pb opening %s\n", inFileName); return 11; }
|
|
if (inFileSize == UTIL_FILESIZE_UNKNOWN) {
|
|
DISPLAY("Pb evaluatin size of %s \n", inFileName);
|
|
fclose(inFile);
|
|
return 11;
|
|
}
|
|
|
|
/* Memory allocation & restrictions */
|
|
if ((U64)benchedSize > inFileSize) benchedSize = (size_t)inFileSize;
|
|
if (benchedSize < inFileSize) {
|
|
DISPLAY("Not enough memory for '%s' \n", inFileName);
|
|
fclose(inFile);
|
|
return 11;
|
|
}
|
|
|
|
/* Alloc */
|
|
origBuff = malloc(benchedSize);
|
|
if(!origBuff) {
|
|
DISPLAY("\nError: not enough memory!\n");
|
|
fclose(inFile);
|
|
return 12;
|
|
}
|
|
|
|
/* Fill input buffer */
|
|
DISPLAY("Loading %s... \r", inFileName);
|
|
{ size_t const readSize = fread(origBuff, 1, benchedSize, inFile);
|
|
fclose(inFile);
|
|
if(readSize != benchedSize) {
|
|
DISPLAY("\nError: problem reading file '%s' !! \n", inFileName);
|
|
free(origBuff);
|
|
return 13;
|
|
} }
|
|
|
|
/* bench */
|
|
DISPLAY("\r%79s\r", "");
|
|
DISPLAY("optimizing for %s - limit speed %u MB/s \n", inFileName, targetSpeed);
|
|
targetSpeed *= 1000000;
|
|
|
|
{ ZSTD_CCtx* const ctx = ZSTD_createCCtx();
|
|
winnerInfo_t winner;
|
|
BMK_result_t candidate;
|
|
const size_t blockSize = g_blockSize ? g_blockSize : benchedSize;
|
|
|
|
/* init */
|
|
if (ctx==NULL) { DISPLAY("\n ZSTD_createCCtx error \n"); free(origBuff); return 14;}
|
|
memset(&winner, 0, sizeof(winner));
|
|
winner.result.cSize = (size_t)(-1);
|
|
|
|
/* find best solution from default params */
|
|
{ const int maxSeeds = g_noSeed ? 1 : ZSTD_maxCLevel();
|
|
int i;
|
|
for (i=1; i<=maxSeeds; i++) {
|
|
ZSTD_compressionParameters const CParams = ZSTD_getCParams(i, blockSize, 0);
|
|
BMK_benchParam(&candidate, origBuff, benchedSize, ctx, CParams);
|
|
if (candidate.cSpeed < targetSpeed)
|
|
break;
|
|
if ( (candidate.cSize < winner.result.cSize)
|
|
| ((candidate.cSize == winner.result.cSize) & (candidate.cSpeed > winner.result.cSpeed)) )
|
|
{
|
|
winner.params = CParams;
|
|
winner.result = candidate;
|
|
BMK_printWinner(stdout, i, winner.result, winner.params, benchedSize);
|
|
} }
|
|
}
|
|
BMK_printWinner(stdout, 99, winner.result, winner.params, benchedSize);
|
|
BMK_translateAdvancedParams(winner.params);
|
|
|
|
/* start tests */
|
|
{ time_t const grillStart = time(NULL);
|
|
do {
|
|
ZSTD_compressionParameters params = winner.params;
|
|
paramVariation(¶ms);
|
|
if ((FUZ_rand(&g_rand) & 31) == 3) params = randomParams(); /* totally random config to improve search space */
|
|
params = ZSTD_adjustCParams(params, blockSize, 0);
|
|
|
|
/* exclude faster if already played set of params */
|
|
if (FUZ_rand(&g_rand) & ((1 << NB_TESTS_PLAYED(params))-1)) continue;
|
|
|
|
/* test */
|
|
NB_TESTS_PLAYED(params)++;
|
|
BMK_benchParam(&candidate, origBuff, benchedSize, ctx, params);
|
|
|
|
/* improvement found => new winner */
|
|
if ( (candidate.cSpeed > targetSpeed)
|
|
& ( (candidate.cSize < winner.result.cSize)
|
|
| ((candidate.cSize == winner.result.cSize) & (candidate.cSpeed > winner.result.cSpeed)) ) )
|
|
{
|
|
winner.params = params;
|
|
winner.result = candidate;
|
|
BMK_printWinner(stdout, 99, winner.result, winner.params, benchedSize);
|
|
BMK_translateAdvancedParams(winner.params);
|
|
}
|
|
} while (BMK_timeSpan(grillStart) < g_grillDuration_s);
|
|
}
|
|
|
|
/* end summary */
|
|
BMK_printWinner(stdout, 99, winner.result, winner.params, benchedSize);
|
|
DISPLAY("grillParams size - optimizer completed \n");
|
|
|
|
/* clean up*/
|
|
ZSTD_freeCCtx(ctx);
|
|
}
|
|
|
|
free(origBuff);
|
|
return 0;
|
|
}
|
|
|
|
static void errorOut(const char* msg)
|
|
{
|
|
DISPLAY("%s \n", msg); exit(1);
|
|
}
|
|
|
|
/*! readU32FromChar() :
|
|
* @return : unsigned integer value read from input in `char` format.
|
|
* allows and interprets K, KB, KiB, M, MB and MiB suffix.
|
|
* Will also modify `*stringPtr`, advancing it to position where it stopped reading.
|
|
* Note : function will exit() program if digit sequence overflows */
|
|
static unsigned readU32FromChar(const char** stringPtr)
|
|
{
|
|
const char errorMsg[] = "error: numeric value too large";
|
|
unsigned result = 0;
|
|
while ((**stringPtr >='0') && (**stringPtr <='9')) {
|
|
unsigned const max = (((unsigned)(-1)) / 10) - 1;
|
|
if (result > max) errorOut(errorMsg);
|
|
result *= 10, result += **stringPtr - '0', (*stringPtr)++ ;
|
|
}
|
|
if ((**stringPtr=='K') || (**stringPtr=='M')) {
|
|
unsigned const maxK = ((unsigned)(-1)) >> 10;
|
|
if (result > maxK) errorOut(errorMsg);
|
|
result <<= 10;
|
|
if (**stringPtr=='M') {
|
|
if (result > maxK) errorOut(errorMsg);
|
|
result <<= 10;
|
|
}
|
|
(*stringPtr)++; /* skip `K` or `M` */
|
|
if (**stringPtr=='i') (*stringPtr)++;
|
|
if (**stringPtr=='B') (*stringPtr)++;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static int usage(const char* exename)
|
|
{
|
|
DISPLAY( "Usage :\n");
|
|
DISPLAY( " %s [arg] file\n", exename);
|
|
DISPLAY( "Arguments :\n");
|
|
DISPLAY( " file : path to the file used as reference (if none, generates a compressible sample)\n");
|
|
DISPLAY( " -H/-h : Help (this text + advanced options)\n");
|
|
return 0;
|
|
}
|
|
|
|
static int usage_advanced(void)
|
|
{
|
|
DISPLAY( "\nAdvanced options :\n");
|
|
DISPLAY( " -T# : set level 1 speed objective \n");
|
|
DISPLAY( " -B# : cut input into blocks of size # (default : single block) \n");
|
|
DISPLAY( " -i# : iteration loops [1-9](default : %i) \n", NBLOOPS);
|
|
DISPLAY( " -O# : find Optimized parameters for # MB/s compression speed (default : 0) \n");
|
|
DISPLAY( " -S : Single run \n");
|
|
DISPLAY( " -P# : generated sample compressibility (default : %.1f%%) \n", COMPRESSIBILITY_DEFAULT * 100);
|
|
return 0;
|
|
}
|
|
|
|
static int badusage(const char* exename)
|
|
{
|
|
DISPLAY("Wrong parameters\n");
|
|
usage(exename);
|
|
return 1;
|
|
}
|
|
|
|
int main(int argc, const char** argv)
|
|
{
|
|
int i,
|
|
filenamesStart=0,
|
|
result;
|
|
const char* exename=argv[0];
|
|
const char* input_filename=0;
|
|
U32 optimizer = 0;
|
|
U32 main_pause = 0;
|
|
U32 targetSpeed = 0;
|
|
|
|
assert(argc>=1); /* for exename */
|
|
|
|
/* Welcome message */
|
|
DISPLAY(WELCOME_MESSAGE);
|
|
|
|
for(i=1; i<argc; i++) {
|
|
const char* argument = argv[i];
|
|
assert(argument != NULL);
|
|
|
|
if(!strcmp(argument,"--no-seed")) { g_noSeed = 1; continue; }
|
|
|
|
/* Decode command (note : aggregated commands are allowed) */
|
|
if (argument[0]=='-') {
|
|
argument++;
|
|
|
|
while (argument[0]!=0) {
|
|
|
|
switch(argument[0])
|
|
{
|
|
/* Display help on usage */
|
|
case 'h' :
|
|
case 'H': usage(exename); usage_advanced(); return 0;
|
|
|
|
/* Pause at the end (hidden option) */
|
|
case 'p': main_pause = 1; argument++; break;
|
|
|
|
/* Modify Nb Iterations */
|
|
case 'i':
|
|
argument++;
|
|
g_nbIterations = readU32FromChar(&argument);
|
|
break;
|
|
|
|
/* Sample compressibility (when no file provided) */
|
|
case 'P':
|
|
argument++;
|
|
{ U32 const proba32 = readU32FromChar(&argument);
|
|
g_compressibility = (double)proba32 / 100.;
|
|
}
|
|
break;
|
|
|
|
case 'O':
|
|
argument++;
|
|
optimizer = 1;
|
|
targetSpeed = readU32FromChar(&argument);
|
|
break;
|
|
|
|
/* Run Single conf */
|
|
case 'S':
|
|
g_singleRun = 1;
|
|
argument++;
|
|
g_params = ZSTD_getCParams(2, g_blockSize, 0);
|
|
for ( ; ; ) {
|
|
switch(*argument)
|
|
{
|
|
case 'w':
|
|
argument++;
|
|
g_params.windowLog = readU32FromChar(&argument);
|
|
continue;
|
|
case 'c':
|
|
argument++;
|
|
g_params.chainLog = readU32FromChar(&argument);
|
|
continue;
|
|
case 'h':
|
|
argument++;
|
|
g_params.hashLog = readU32FromChar(&argument);
|
|
continue;
|
|
case 's':
|
|
argument++;
|
|
g_params.searchLog = readU32FromChar(&argument);
|
|
continue;
|
|
case 'l': /* search length */
|
|
argument++;
|
|
g_params.searchLength = readU32FromChar(&argument);
|
|
continue;
|
|
case 't': /* target length */
|
|
argument++;
|
|
g_params.targetLength = readU32FromChar(&argument);
|
|
continue;
|
|
case 'S': /* strategy */
|
|
argument++;
|
|
g_params.strategy = (ZSTD_strategy)readU32FromChar(&argument);
|
|
continue;
|
|
case 'L':
|
|
{ int const cLevel = readU32FromChar(&argument);
|
|
g_params = ZSTD_getCParams(cLevel, g_blockSize, 0);
|
|
continue;
|
|
}
|
|
default : ;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
|
|
/* target level1 speed objective, in MB/s */
|
|
case 'T':
|
|
argument++;
|
|
g_target = readU32FromChar(&argument);
|
|
break;
|
|
|
|
/* cut input into blocks */
|
|
case 'B':
|
|
argument++;
|
|
g_blockSize = readU32FromChar(&argument);
|
|
DISPLAY("using %u KB block size \n", g_blockSize>>10);
|
|
break;
|
|
|
|
/* Unknown command */
|
|
default : return badusage(exename);
|
|
}
|
|
}
|
|
continue;
|
|
} /* if (argument[0]=='-') */
|
|
|
|
/* first provided filename is input */
|
|
if (!input_filename) { input_filename=argument; filenamesStart=i; continue; }
|
|
}
|
|
|
|
if (filenamesStart==0) {
|
|
result = benchSample();
|
|
} else {
|
|
if (optimizer) {
|
|
result = optimizeForSize(input_filename, targetSpeed);
|
|
} else {
|
|
result = benchFiles(argv+filenamesStart, argc-filenamesStart);
|
|
} }
|
|
|
|
if (main_pause) { int unused; printf("press enter...\n"); unused = getchar(); (void)unused; }
|
|
|
|
return result;
|
|
}
|