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Benchtests: Add bench for pthread_spin_{try}lock and mutex_trylock

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Reuses infrastructure from previous pthread_mutex_lock benchmarks to
test other performance sensitive functions.
This commit is contained in:
Noah Goldstein 2022-09-30 21:13:26 -07:00
parent 114e299ca6
commit 10c779f44a
6 changed files with 151 additions and 12 deletions
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10
benchtests/Makefile
View File

@ -103,11 +103,19 @@ endif
bench-pthread := \
pthread-locks \
pthread-mutex-locks \
pthread-mutex-lock \
pthread-mutex-trylock \
pthread-spin-lock \
pthread-spin-trylock \
pthread_once \
thread_create \
# bench-pthread
LDLIBS-bench-pthread-mutex-lock += -lm
LDLIBS-bench-pthread-mutex-trylock += -lm
LDLIBS-bench-pthread-spin-lock += -lm
LDLIBS-bench-pthread-spin-trylock += -lm
bench-string := \
ffs \
ffsll \

20
benchtests/bench-pthread-mutex-locks.c → benchtests/bench-pthread-lock-base.c
View File

@ -1,4 +1,4 @@
/* Measure mutex_lock for different threads and critical sections.
/* Measure lock functions for different threads and critical sections.
Copyright (C) 2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
@ -17,7 +17,6 @@
<https://www.gnu.org/licenses/>. */
#define TEST_MAIN
#define TEST_NAME "pthread-mutex-locks"
#define TIMEOUT (20 * 60)
#include <stdio.h>
@ -31,8 +30,8 @@
#include "bench-timing.h"
#include "json-lib.h"
static pthread_mutex_t lock;
static pthread_mutexattr_t attr;
static bench_lock_t lock;
static bench_lock_attr_t attr;
static pthread_barrier_t barrier;
#define START_ITERS 1000
@ -104,9 +103,9 @@ worker (void *v)
TIMING_NOW (start);
while (iters--)
{
pthread_mutex_lock (&lock);
LOCK (&lock);
critical_section (crt_len);
pthread_mutex_unlock (&lock);
UNLOCK (&lock);
non_critical_section (non_crt_len);
}
TIMING_NOW (stop);
@ -123,7 +122,7 @@ do_one_test (int num_threads, int crt_len, int non_crt_len, long iters)
Worker_Params *p, params[num_threads];
pthread_t threads[num_threads];
pthread_mutex_init (&lock, &attr);
LOCK_INIT (&lock, &attr);
pthread_barrier_init (&barrier, NULL, num_threads);
for (i = 0; i < num_threads; i++)
@ -137,7 +136,7 @@ do_one_test (int num_threads, int crt_len, int non_crt_len, long iters)
for (i = 0; i < num_threads; i++)
pthread_join (threads[i], NULL);
pthread_mutex_destroy (&lock);
LOCK_DESTROY (&lock);
pthread_barrier_destroy (&barrier);
mean = 0;
@ -246,7 +245,7 @@ do_bench (void)
char name[128];
json_init (&json_ctx, 2, stdout);
json_attr_object_begin (&json_ctx, "pthread_mutex_locks");
json_attr_object_begin (&json_ctx, TEST_NAME);
/* The thread config begins from 1, and increases by 2x until nprocs.
We also wants to test over-saturation case (1.25*nprocs). */
@ -260,8 +259,7 @@ do_bench (void)
threads[th_conf++] = nprocs;
threads[th_conf++] = nprocs + nprocs / 4;
pthread_mutexattr_init (&attr);
pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_ADAPTIVE_NP);
LOCK_ATTR_INIT (&attr);
snprintf (name, sizeof name, "type=adaptive");
for (k = 0; k < (sizeof (non_crt_lens) / sizeof (int)); k++)

32
benchtests/bench-pthread-mutex-lock.c Normal file
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@ -0,0 +1,32 @@
/* Measure mutex_lock for different threads and critical sections.
Copyright (C) 2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#define LOCK(lock) pthread_mutex_lock (lock)
#define UNLOCK(lock) pthread_mutex_unlock (lock)
#define LOCK_INIT(lock, attr) pthread_mutex_init (lock, attr)
#define LOCK_DESTROY(lock) pthread_mutex_destroy (lock)
#define LOCK_ATTR_INIT(attr) \
pthread_mutexattr_init (attr); \
pthread_mutexattr_settype (attr, PTHREAD_MUTEX_ADAPTIVE_NP);
#define bench_lock_t pthread_mutex_t
#define bench_lock_attr_t pthread_mutexattr_t
#define TEST_NAME "pthread-mutex-lock"
#include "bench-pthread-lock-base.c"

37
benchtests/bench-pthread-mutex-trylock.c Normal file
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@ -0,0 +1,37 @@
/* Measure mutex_trylock for different threads and critical sections.
Copyright (C) 2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#define LOCK(lock) \
while (pthread_mutex_trylock (lock) != 0) \
{ \
non_critical_section (non_crt_len); \
}
#define UNLOCK(lock) pthread_mutex_unlock (lock)
#define LOCK_INIT(lock, attr) pthread_mutex_init (lock, attr)
#define LOCK_DESTROY(lock) pthread_mutex_destroy (lock)
#define LOCK_ATTR_INIT(attr) \
pthread_mutexattr_init (attr); \
pthread_mutexattr_settype (attr, PTHREAD_MUTEX_ADAPTIVE_NP);
#define bench_lock_t pthread_mutex_t
#define bench_lock_attr_t pthread_mutexattr_t
#define TEST_NAME "pthread-mutex-trylock"
#include "bench-pthread-lock-base.c"

30
benchtests/bench-pthread-spin-lock.c Normal file
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@ -0,0 +1,30 @@
/* Measure mutex_trylock for different threads and critical sections.
Copyright (C) 2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#define LOCK(lock) pthread_spin_lock (lock)
#define UNLOCK(lock) pthread_spin_unlock (lock)
#define LOCK_INIT(lock, attr) pthread_spin_init (lock, *(attr))
#define LOCK_DESTROY(lock) pthread_spin_destroy (lock)
#define LOCK_ATTR_INIT(attr) *(attr) = 0
#define bench_lock_t pthread_spinlock_t
#define bench_lock_attr_t int
#define TEST_NAME "pthread-spin-lock"
#include "bench-pthread-lock-base.c"

34
benchtests/bench-pthread-spin-trylock.c Normal file
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@ -0,0 +1,34 @@
/* Measure spin_trylock for different threads and critical sections.
Copyright (C) 2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#define LOCK(lock) \
while (pthread_spin_lock (lock) != 0) \
{ \
non_critical_section (non_crt_len); \
}
#define UNLOCK(lock) pthread_spin_unlock (lock)
#define LOCK_INIT(lock, attr) pthread_spin_init (lock, *(attr))
#define LOCK_DESTROY(lock) pthread_spin_destroy (lock)
#define LOCK_ATTR_INIT(attr) *(attr) = 0
#define bench_lock_t pthread_spinlock_t
#define bench_lock_attr_t int
#define TEST_NAME "pthread-spin-trylock"
#include "bench-pthread-lock-base.c"