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| author | Keith Bostic <keith@wiredtiger.com> | 2014-08-28 14:34:01 -0400 |
|---|---|---|
| committer | Keith Bostic <keith@wiredtiger.com> | 2014-08-28 14:34:01 -0400 |
| commit | b9131073d0077e78eab9478a424594804f9ac963 (patch) | |
| tree | e94ca2fc06f25d261f7de19a913c1ab80e494ac8 /build_posix | |
| parent | 788f49cfa8ad8c839e878bd96ad42033c6dea32c (diff) | |
| download | mongo-b9131073d0077e78eab9478a424594804f9ac963.tar.gz | |
Switch from adaptive pthread mutexes by default, based on:
http://smalldatum.blogspot.com/2014/08/the-innodb-mutex.html
There's more information here:
http://stackoverflow.com/questions/19863734/what-is-pthread-mutex-adaptive-np
Add a new option, --pthread_adaptive to configure adaptive mutexes.
Don't list --pthread-logging in the --with-spinlock=XXX configure usage
message, that's not for public use.
Add a tuning page that talks about mutex choice.
Diffstat (limited to 'build_posix')
| -rw-r--r-- | build_posix/aclocal/options.m4 | 4 | ||||
| -rw-r--r-- | build_posix/configure.ac.in | 10 |
2 files changed, 3 insertions, 11 deletions
diff --git a/build_posix/aclocal/options.m4 b/build_posix/aclocal/options.m4 index 54933130b05..2682c8ea82c 100644 --- a/build_posix/aclocal/options.m4 +++ b/build_posix/aclocal/options.m4 @@ -172,13 +172,15 @@ AH_TEMPLATE(SPINLOCK_TYPE, [Spinlock type from mutex.h.]) AC_MSG_CHECKING(if --with-spinlock option specified) AC_ARG_WITH(spinlock, [AS_HELP_STRING([--with-spinlock], - [Spinlock type (pthread, pthread_logging or gcc).])], + [Spinlock type (pthread, pthread_adaptive or gcc).])], [], [with_spinlock=pthread]) case "$with_spinlock" in gcc) AC_DEFINE(SPINLOCK_TYPE, SPINLOCK_GCC);; pthread|pthreads) AC_DEFINE(SPINLOCK_TYPE, SPINLOCK_PTHREAD_MUTEX);; +pthread_adaptive|pthreads_adaptive) + AC_DEFINE(SPINLOCK_TYPE, SPINLOCK_PTHREAD_MUTEX_ADAPTIVE);; pthread_logging|pthreads_logging) AC_DEFINE(SPINLOCK_TYPE, SPINLOCK_PTHREAD_MUTEX_LOGGING);; *) AC_MSG_ERROR([Unknown spinlock type "$with_spinlock"]);; diff --git a/build_posix/configure.ac.in b/build_posix/configure.ac.in index 4905cd45e26..dd5bce738ea 100644 --- a/build_posix/configure.ac.in +++ b/build_posix/configure.ac.in @@ -87,16 +87,6 @@ AS_CASE([$host_os], [darwin*], [], [AC_CHECK_FUNCS([fdatasync])]) AC_SYS_LARGEFILE -AC_MSG_CHECKING([if the adaptive mutex type is available]) -AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]],[[ - pthread_mutexattr_t attr; - pthread_mutexattr_init(&attr); - pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ADAPTIVE_NP);]])], - [AC_MSG_RESULT([yes]) - AC_DEFINE([HAVE_MUTEX_ADAPTIVE], [1], - [Define if adaptive mutexes are supported.])], - [AC_MSG_RESULT([no])]) - AC_C_BIGENDIAN # Linux requires _GNU_SOURCE to be defined |