497 lines
19 KiB
C
497 lines
19 KiB
C
/*
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bench.c - Demo program to benchmark open-source compression algorithms
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Copyright (C) Yann Collet 2012-2016
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GPL v2 License
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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You can contact the author at :
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- LZ4 homepage : http://www.lz4.org
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- LZ4 source repository : https://github.com/lz4/lz4
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*/
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/* *************************************
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* Includes
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***************************************/
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#include "util.h" /* Compiler options, UTIL_GetFileSize, UTIL_sleep */
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#include <stdlib.h> /* malloc, free */
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#include <string.h> /* memset */
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#include <stdio.h> /* fprintf, fopen, ftello64 */
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#include <time.h> /* clock_t, clock, CLOCKS_PER_SEC */
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#include "datagen.h" /* RDG_genBuffer */
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#include "xxhash.h"
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#include "lz4.h"
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#define COMPRESSOR0 LZ4_compress_local
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static int LZ4_compress_local(const char* src, char* dst, int srcSize, int dstSize, int clevel) { (void)clevel; return LZ4_compress_default(src, dst, srcSize, dstSize); }
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#include "lz4hc.h"
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#define COMPRESSOR1 LZ4_compress_HC
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#define DEFAULTCOMPRESSOR COMPRESSOR0
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#define LZ4_isError(errcode) (errcode==0)
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/* *************************************
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* Constants
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***************************************/
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#ifndef LZ4_GIT_COMMIT_STRING
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# define LZ4_GIT_COMMIT_STRING ""
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#else
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# define LZ4_GIT_COMMIT_STRING LZ4_EXPAND_AND_QUOTE(LZ4_GIT_COMMIT)
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#endif
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#define NBSECONDS 3
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#define TIMELOOP_MICROSEC 1*1000000ULL /* 1 second */
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#define ACTIVEPERIOD_MICROSEC 70*1000000ULL /* 70 seconds */
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#define COOLPERIOD_SEC 10
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#define KB *(1 <<10)
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#define MB *(1 <<20)
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#define GB *(1U<<30)
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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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static U32 g_compressibilityDefault = 50;
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/* *************************************
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* console display
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***************************************/
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#define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
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#define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); }
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static U32 g_displayLevel = 2; /* 0 : no display; 1: errors; 2 : + result + interaction + warnings; 3 : + progression; 4 : + information */
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#define DISPLAYUPDATE(l, ...) if (g_displayLevel>=l) { \
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if ((clock() - g_time > refreshRate) || (g_displayLevel>=4)) \
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{ g_time = clock(); DISPLAY(__VA_ARGS__); \
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if (g_displayLevel>=4) fflush(stdout); } }
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static const clock_t refreshRate = CLOCKS_PER_SEC * 15 / 100;
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static clock_t g_time = 0;
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/* *************************************
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* Exceptions
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***************************************/
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#ifndef DEBUG
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# define DEBUG 0
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#endif
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#define DEBUGOUTPUT(...) if (DEBUG) DISPLAY(__VA_ARGS__);
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#define EXM_THROW(error, ...) \
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{ \
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DEBUGOUTPUT("Error defined at %s, line %i : \n", __FILE__, __LINE__); \
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DISPLAYLEVEL(1, "Error %i : ", error); \
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DISPLAYLEVEL(1, __VA_ARGS__); \
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DISPLAYLEVEL(1, "\n"); \
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exit(error); \
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}
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/* *************************************
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* Benchmark Parameters
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***************************************/
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static U32 g_nbSeconds = NBSECONDS;
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static size_t g_blockSize = 0;
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int g_additionalParam = 0;
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void BMK_setNotificationLevel(unsigned level) { g_displayLevel=level; }
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void BMK_setAdditionalParam(int additionalParam) { g_additionalParam=additionalParam; }
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void BMK_SetNbSeconds(unsigned nbSeconds)
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{
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g_nbSeconds = nbSeconds;
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DISPLAYLEVEL(3, "- test >= %u seconds per compression / decompression -\n", g_nbSeconds);
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}
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void BMK_SetBlockSize(size_t blockSize)
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{
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g_blockSize = blockSize;
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DISPLAYLEVEL(2, "using blocks of size %u KB \n", (U32)(blockSize>>10));
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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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{
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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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struct compressionParameters
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{
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int (*compressionFunction)(const char* src, char* dst, int srcSize, int dstSize, int cLevel);
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};
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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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static int BMK_benchMem(const void* srcBuffer, size_t srcSize,
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const char* displayName, int cLevel,
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const size_t* fileSizes, U32 nbFiles)
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{
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size_t const blockSize = (g_blockSize>=32 ? g_blockSize : srcSize) + (!srcSize) /* avoid div by 0 */ ;
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U32 const maxNbBlocks = (U32) ((srcSize + (blockSize-1)) / blockSize) + nbFiles;
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blockParam_t* const blockTable = (blockParam_t*) malloc(maxNbBlocks * sizeof(blockParam_t));
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size_t const maxCompressedSize = LZ4_compressBound((int)srcSize) + (maxNbBlocks * 1024); /* add some room for safety */
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void* const compressedBuffer = malloc(maxCompressedSize);
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void* const resultBuffer = malloc(srcSize);
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U32 nbBlocks;
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UTIL_time_t ticksPerSecond;
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struct compressionParameters compP;
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int cfunctionId;
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/* checks */
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if (!compressedBuffer || !resultBuffer || !blockTable)
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EXM_THROW(31, "allocation error : not enough memory");
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/* init */
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if (strlen(displayName)>17) displayName += strlen(displayName)-17; /* can only display 17 characters */
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UTIL_initTimer(&ticksPerSecond);
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/* Init */
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if (cLevel < LZ4HC_MIN_CLEVEL) cfunctionId = 0; else cfunctionId = 1;
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switch (cfunctionId)
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{
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#ifdef COMPRESSOR0
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case 0 : compP.compressionFunction = COMPRESSOR0; break;
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#endif
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#ifdef COMPRESSOR1
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case 1 : compP.compressionFunction = COMPRESSOR1; break;
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#endif
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default : compP.compressionFunction = DEFAULTCOMPRESSOR;
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}
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/* Init blockTable data */
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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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U32 fileNb;
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for (nbBlocks=0, fileNb=0; fileNb<nbFiles; fileNb++) {
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size_t remaining = fileSizes[fileNb];
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U32 const nbBlocksforThisFile = (U32)((remaining + (blockSize-1)) / blockSize);
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U32 const blockEnd = nbBlocks + nbBlocksforThisFile;
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for ( ; nbBlocks<blockEnd; nbBlocks++) {
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size_t const thisBlockSize = MIN(remaining, blockSize);
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blockTable[nbBlocks].srcPtr = srcPtr;
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blockTable[nbBlocks].cPtr = cPtr;
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blockTable[nbBlocks].resPtr = resPtr;
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blockTable[nbBlocks].srcSize = thisBlockSize;
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blockTable[nbBlocks].cRoom = LZ4_compressBound((int)thisBlockSize);
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srcPtr += thisBlockSize;
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cPtr += blockTable[nbBlocks].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, 0.50, 1);
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/* Bench */
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{ U64 fastestC = (U64)(-1LL), fastestD = (U64)(-1LL);
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U64 const crcOrig = XXH64(srcBuffer, srcSize, 0);
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UTIL_time_t coolTime;
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U64 const maxTime = (g_nbSeconds * TIMELOOP_MICROSEC) + 100;
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U64 totalCTime=0, totalDTime=0;
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U32 cCompleted=0, dCompleted=0;
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# define NB_MARKS 4
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const char* const marks[NB_MARKS] = { " |", " /", " =", "\\" };
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U32 markNb = 0;
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size_t cSize = 0;
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double ratio = 0.;
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UTIL_getTime(&coolTime);
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DISPLAYLEVEL(2, "\r%79s\r", "");
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while (!cCompleted | !dCompleted) {
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UTIL_time_t clockStart;
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U64 clockLoop = g_nbSeconds ? TIMELOOP_MICROSEC : 1;
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/* overheat protection */
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if (UTIL_clockSpanMicro(coolTime, ticksPerSecond) > ACTIVEPERIOD_MICROSEC) {
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DISPLAYLEVEL(2, "\rcooling down ... \r");
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UTIL_sleep(COOLPERIOD_SEC);
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UTIL_getTime(&coolTime);
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}
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/* Compression */
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DISPLAYLEVEL(2, "%2s-%-17.17s :%10u ->\r", marks[markNb], displayName, (U32)srcSize);
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if (!cCompleted) memset(compressedBuffer, 0xE5, maxCompressedSize); /* warm up and erase result buffer */
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UTIL_sleepMilli(1); /* give processor time to other processes */
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UTIL_waitForNextTick(ticksPerSecond);
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UTIL_getTime(&clockStart);
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if (!cCompleted) { /* still some time to do compression tests */
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U32 nbLoops = 0;
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do {
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U32 blockNb;
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for (blockNb=0; blockNb<nbBlocks; blockNb++) {
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size_t const rSize = compP.compressionFunction(blockTable[blockNb].srcPtr, blockTable[blockNb].cPtr, (int)blockTable[blockNb].srcSize, (int)blockTable[blockNb].cRoom, cLevel);
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if (LZ4_isError(rSize)) EXM_THROW(1, "LZ4_compress() failed");
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blockTable[blockNb].cSize = rSize;
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}
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nbLoops++;
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} while (UTIL_clockSpanMicro(clockStart, ticksPerSecond) < clockLoop);
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{ U64 const clockSpan = UTIL_clockSpanMicro(clockStart, ticksPerSecond);
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if (clockSpan < fastestC*nbLoops) fastestC = clockSpan / nbLoops;
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totalCTime += clockSpan;
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cCompleted = totalCTime>maxTime;
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} }
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cSize = 0;
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{ U32 blockNb; for (blockNb=0; blockNb<nbBlocks; blockNb++) cSize += blockTable[blockNb].cSize; }
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ratio = (double)srcSize / (double)cSize;
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markNb = (markNb+1) % NB_MARKS;
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DISPLAYLEVEL(2, "%2s-%-17.17s :%10u ->%10u (%5.3f),%6.1f MB/s\r",
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marks[markNb], displayName, (U32)srcSize, (U32)cSize, ratio,
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(double)srcSize / fastestC );
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(void)fastestD; (void)crcOrig; /* unused when decompression disabled */
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#if 1
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/* Decompression */
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if (!dCompleted) memset(resultBuffer, 0xD6, srcSize); /* warm result buffer */
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UTIL_sleepMilli(1); /* give processor time to other processes */
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UTIL_waitForNextTick(ticksPerSecond);
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UTIL_getTime(&clockStart);
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if (!dCompleted) {
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U32 nbLoops = 0;
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do {
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U32 blockNb;
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for (blockNb=0; blockNb<nbBlocks; blockNb++) {
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size_t const regenSize = LZ4_decompress_safe(blockTable[blockNb].cPtr, blockTable[blockNb].resPtr, (int)blockTable[blockNb].cSize, (int)blockTable[blockNb].srcSize);
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if (LZ4_isError(regenSize)) {
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DISPLAY("LZ4_decompress_safe() failed on block %u \n", blockNb);
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clockLoop = 0; /* force immediate test end */
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break;
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}
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blockTable[blockNb].resSize = regenSize;
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}
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nbLoops++;
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} while (UTIL_clockSpanMicro(clockStart, ticksPerSecond) < clockLoop);
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{ U64 const clockSpan = UTIL_clockSpanMicro(clockStart, ticksPerSecond);
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if (clockSpan < fastestD*nbLoops) fastestD = clockSpan / nbLoops;
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totalDTime += clockSpan;
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dCompleted = totalDTime>maxTime;
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} }
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markNb = (markNb+1) % NB_MARKS;
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DISPLAYLEVEL(2, "%2s-%-17.17s :%10u ->%10u (%5.3f),%6.1f MB/s ,%6.1f MB/s\r",
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marks[markNb], displayName, (U32)srcSize, (U32)cSize, ratio,
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(double)srcSize / fastestC,
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(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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size_t u;
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DISPLAY("!!! WARNING !!! %14s : Invalid Checksum : %x != %x \n", displayName, (unsigned)crcOrig, (unsigned)crcCheck);
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for (u=0; u<srcSize; u++) {
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if (((const BYTE*)srcBuffer)[u] != ((const BYTE*)resultBuffer)[u]) {
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U32 segNb, bNb, pos;
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size_t bacc = 0;
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DISPLAY("Decoding error at pos %u ", (U32)u);
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for (segNb = 0; segNb < nbBlocks; segNb++) {
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if (bacc + blockTable[segNb].srcSize > u) break;
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bacc += blockTable[segNb].srcSize;
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}
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pos = (U32)(u - bacc);
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bNb = pos / (128 KB);
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DISPLAY("(block %u, sub %u, pos %u) \n", segNb, bNb, pos);
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break;
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}
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if (u==srcSize-1) { /* should never happen */
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DISPLAY("no difference detected\n");
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} }
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break;
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} } /* CRC Checking */
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#endif
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} /* for (testNb = 1; testNb <= (g_nbSeconds + !g_nbSeconds); testNb++) */
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if (g_displayLevel == 1) {
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double cSpeed = (double)srcSize / fastestC;
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double dSpeed = (double)srcSize / fastestD;
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if (g_additionalParam)
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DISPLAY("-%-3i%11i (%5.3f) %6.2f MB/s %6.1f MB/s %s (param=%d)\n", cLevel, (int)cSize, ratio, cSpeed, dSpeed, displayName, g_additionalParam);
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else
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DISPLAY("-%-3i%11i (%5.3f) %6.2f MB/s %6.1f MB/s %s\n", cLevel, (int)cSize, ratio, cSpeed, dSpeed, displayName);
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}
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DISPLAYLEVEL(2, "%2i#\n", cLevel);
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} /* Bench */
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/* clean up */
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free(blockTable);
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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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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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BYTE* testmem = NULL;
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requiredMem = (((requiredMem >> 26) + 1) << 26);
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requiredMem += step;
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if (requiredMem > maxMemory) requiredMem = maxMemory;
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do {
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testmem = (BYTE*)malloc((size_t)requiredMem);
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requiredMem -= step;
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} while (!testmem);
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free(testmem);
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return (size_t)(requiredMem);
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}
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static void BMK_benchCLevel(void* srcBuffer, size_t benchedSize,
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const char* displayName, int cLevel, int cLevelLast,
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const size_t* fileSizes, unsigned nbFiles)
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{
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int l;
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const char* pch = strrchr(displayName, '\\'); /* Windows */
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if (!pch) pch = strrchr(displayName, '/'); /* Linux */
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if (pch) displayName = pch+1;
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SET_HIGH_PRIORITY;
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if (g_displayLevel == 1 && !g_additionalParam)
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DISPLAY("bench %s %s: input %u bytes, %u seconds, %u KB blocks\n", LZ4_VERSION_STRING, LZ4_GIT_COMMIT_STRING, (U32)benchedSize, g_nbSeconds, (U32)(g_blockSize>>10));
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if (cLevelLast < cLevel) cLevelLast = cLevel;
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for (l=cLevel; l <= cLevelLast; l++) {
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BMK_benchMem(srcBuffer, benchedSize,
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displayName, l,
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fileSizes, nbFiles);
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}
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}
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/*! BMK_loadFiles() :
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Loads `buffer` with content of files listed within `fileNamesTable`.
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At most, fills `buffer` entirely */
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static void BMK_loadFiles(void* buffer, size_t bufferSize,
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size_t* fileSizes,
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const char** fileNamesTable, unsigned nbFiles)
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{
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size_t pos = 0, totalSize = 0;
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unsigned n;
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for (n=0; n<nbFiles; n++) {
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FILE* f;
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U64 fileSize = UTIL_getFileSize(fileNamesTable[n]);
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if (UTIL_isDirectory(fileNamesTable[n])) {
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DISPLAYLEVEL(2, "Ignoring %s directory... \n", fileNamesTable[n]);
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fileSizes[n] = 0;
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continue;
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}
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f = fopen(fileNamesTable[n], "rb");
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if (f==NULL) EXM_THROW(10, "impossible to open file %s", fileNamesTable[n]);
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DISPLAYUPDATE(2, "Loading %s... \r", fileNamesTable[n]);
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if (fileSize > bufferSize-pos) fileSize = bufferSize-pos, nbFiles=n; /* buffer too small - stop after this file */
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{ size_t const readSize = fread(((char*)buffer)+pos, 1, (size_t)fileSize, f);
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if (readSize != (size_t)fileSize) EXM_THROW(11, "could not read %s", fileNamesTable[n]);
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pos += readSize; }
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fileSizes[n] = (size_t)fileSize;
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totalSize += (size_t)fileSize;
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fclose(f);
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}
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if (totalSize == 0) EXM_THROW(12, "no data to bench");
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}
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static void BMK_benchFileTable(const char** fileNamesTable, unsigned nbFiles,
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int cLevel, int cLevelLast)
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{
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void* srcBuffer;
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size_t benchedSize;
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size_t* fileSizes = (size_t*)malloc(nbFiles * sizeof(size_t));
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U64 const totalSizeToLoad = UTIL_getTotalFileSize(fileNamesTable, nbFiles);
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char mfName[20] = {0};
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if (!fileSizes) EXM_THROW(12, "not enough memory for fileSizes");
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/* Memory allocation & restrictions */
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benchedSize = BMK_findMaxMem(totalSizeToLoad * 3) / 3;
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if (benchedSize==0) EXM_THROW(12, "not enough memory");
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if ((U64)benchedSize > totalSizeToLoad) benchedSize = (size_t)totalSizeToLoad;
|
|
if (benchedSize < totalSizeToLoad)
|
|
DISPLAY("Not enough memory; testing %u MB only...\n", (U32)(benchedSize >> 20));
|
|
srcBuffer = malloc(benchedSize);
|
|
if (!srcBuffer) EXM_THROW(12, "not enough memory");
|
|
|
|
/* Load input buffer */
|
|
BMK_loadFiles(srcBuffer, benchedSize, fileSizes, fileNamesTable, nbFiles);
|
|
|
|
/* Bench */
|
|
snprintf (mfName, sizeof(mfName), " %u files", nbFiles);
|
|
{ const char* displayName = (nbFiles > 1) ? mfName : fileNamesTable[0];
|
|
BMK_benchCLevel(srcBuffer, benchedSize,
|
|
displayName, cLevel, cLevelLast,
|
|
fileSizes, nbFiles);
|
|
}
|
|
|
|
/* clean up */
|
|
free(srcBuffer);
|
|
free(fileSizes);
|
|
}
|
|
|
|
|
|
static void BMK_syntheticTest(int cLevel, int cLevelLast, double compressibility)
|
|
{
|
|
char name[20] = {0};
|
|
size_t benchedSize = 10000000;
|
|
void* const srcBuffer = malloc(benchedSize);
|
|
|
|
/* Memory allocation */
|
|
if (!srcBuffer) EXM_THROW(21, "not enough memory");
|
|
|
|
/* Fill input buffer */
|
|
RDG_genBuffer(srcBuffer, benchedSize, compressibility, 0.0, 0);
|
|
|
|
/* Bench */
|
|
snprintf (name, sizeof(name), "Synthetic %2u%%", (unsigned)(compressibility*100));
|
|
BMK_benchCLevel(srcBuffer, benchedSize, name, cLevel, cLevelLast, &benchedSize, 1);
|
|
|
|
/* clean up */
|
|
free(srcBuffer);
|
|
}
|
|
|
|
|
|
int BMK_benchFiles(const char** fileNamesTable, unsigned nbFiles,
|
|
int cLevel, int cLevelLast)
|
|
{
|
|
double const compressibility = (double)g_compressibilityDefault / 100;
|
|
|
|
if (nbFiles == 0)
|
|
BMK_syntheticTest(cLevel, cLevelLast, compressibility);
|
|
else
|
|
BMK_benchFileTable(fileNamesTable, nbFiles, cLevel, cLevelLast);
|
|
return 0;
|
|
}
|