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GNU C Library master sources branch master updated. glibc-2.26-215-g9ce673b
- From: fw at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 30 Aug 2017 14:20:51 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.26-215-g9ce673b
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=9ce673b69e82578044958f66d93dcaddb23f6e95
commit 9ce673b69e82578044958f66d93dcaddb23f6e95
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Aug 30 16:20:20 2017 +0200
Do not scale NPTL tests with available number of CPUs
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.
diff --git a/ChangeLog b/ChangeLog
index addc36a..e057487 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -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>
[BZ #22035]
diff --git a/nptl/tst-cond16.c b/nptl/tst-cond16.c
index 032677a..b3bfb90 100644
--- a/nptl/tst-cond16.c
+++ b/nptl/tst-cond16.c
@@ -28,7 +28,7 @@ pthread_cond_t cv = PTHREAD_COND_INITIALIZER;
pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
bool n, exiting;
FILE *f;
-int count;
+enum { count = 8 }; /* Number of worker threads. */
void *
tf (void *dummy)
@@ -71,11 +71,6 @@ do_test (void)
return 1;
}
- count = sysconf (_SC_NPROCESSORS_ONLN);
- if (count <= 0)
- count = 1;
- count *= 4;
-
pthread_t th[count];
pthread_attr_t attr;
int i, ret, sz;
diff --git a/nptl/tst-cond18.c b/nptl/tst-cond18.c
index 187f3af..6276110 100644
--- a/nptl/tst-cond18.c
+++ b/nptl/tst-cond18.c
@@ -28,7 +28,8 @@
pthread_cond_t cv = PTHREAD_COND_INITIALIZER;
pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
bool exiting;
-int fd, count, spins, nn;
+int fd, spins, nn;
+enum { count = 8 }; /* Number of worker threads. */
void *
tf (void *id)
@@ -82,11 +83,6 @@ do_test (void)
return 1;
}
- count = sysconf (_SC_NPROCESSORS_ONLN);
- if (count <= 0)
- count = 1;
- count *= 8;
-
pthread_t th[count + 1];
pthread_attr_t attr;
int i, ret, sz;
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 6 ++++++
nptl/tst-cond16.c | 7 +------
nptl/tst-cond18.c | 8 ++------
3 files changed, 9 insertions(+), 12 deletions(-)
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