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Do not scale NPTL tests with available number of CPUs

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On very large multi-processor systems, creating hundreds of threads
runs into a test time out.  The tests do not seem to benefit from
massive over-scheduling.
This commit is contained in:
Florian Weimer 2017-08-30 16:20:20 +02:00
parent 8a0e619652
commit 9ce673b69e
3 changed files with 9 additions and 12 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2017-08-30 Florian Weimer <fweimer@redhat.com>
Do not scale NPTL tests with available number of CPUs.
* nptl/tst-cond16.c (count): Set to constant value of 8.
* nptl/tst-cond18.c (count): Likewise.
2017-08-29 Joseph Myers <joseph@codesourcery.com> 2017-08-29 Joseph Myers <joseph@codesourcery.com>
[BZ #22035] [BZ #22035]

7
nptl/tst-cond16.c
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@ -28,7 +28,7 @@ pthread_cond_t cv = PTHREAD_COND_INITIALIZER;
pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
bool n, exiting; bool n, exiting;
FILE *f; FILE *f;
int count; enum { count = 8 }; /* Number of worker threads. */
void * void *
tf (void *dummy) tf (void *dummy)
@ -71,11 +71,6 @@ do_test (void)
return 1; return 1;
} }
count = sysconf (_SC_NPROCESSORS_ONLN);
if (count <= 0)
count = 1;
count *= 4;
pthread_t th[count]; pthread_t th[count];
pthread_attr_t attr; pthread_attr_t attr;
int i, ret, sz; int i, ret, sz;

8
nptl/tst-cond18.c
View File

@ -28,7 +28,8 @@
pthread_cond_t cv = PTHREAD_COND_INITIALIZER; pthread_cond_t cv = PTHREAD_COND_INITIALIZER;
pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
bool exiting; bool exiting;
int fd, count, spins, nn; int fd, spins, nn;
enum { count = 8 }; /* Number of worker threads. */
void * void *
tf (void *id) tf (void *id)
@ -82,11 +83,6 @@ do_test (void)
return 1; return 1;
} }
count = sysconf (_SC_NPROCESSORS_ONLN);
if (count <= 0)
count = 1;
count *= 8;
pthread_t th[count + 1]; pthread_t th[count + 1];
pthread_attr_t attr; pthread_attr_t attr;
int i, ret, sz; int i, ret, sz;