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| author | Jeremy Allison <jra@samba.org> | 2012-01-05 15:48:24 -0800 |
|---|---|---|
| committer | Jeremy Allison <jra@samba.org> | 2012-01-06 02:42:25 +0100 |
| commit | e8a7d9c822ae4be4533f9e34885816a5b7831154 (patch) | |
| tree | 50352a0092e47131f3858f664740a5cbee8fdd44 /source3/modules/vfs_aio_pthread.c | |
| parent | 200c22b9940f8e222f20f95691bc61dcb883b609 (diff) | |
| download | samba-e8a7d9c822ae4be4533f9e34885816a5b7831154.tar.gz samba-e8a7d9c822ae4be4533f9e34885816a5b7831154.tar.bz2 samba-e8a7d9c822ae4be4533f9e34885816a5b7831154.zip | |
Add a sys_get_number_of_cores() function that calls sysconf or sysctl
and tunes the aio threads.
Diffstat (limited to 'source3/modules/vfs_aio_pthread.c')
| -rw-r--r-- | source3/modules/vfs_aio_pthread.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/source3/modules/vfs_aio_pthread.c b/source3/modules/vfs_aio_pthread.c index cccaa332e0..9217b69e80 100644 --- a/source3/modules/vfs_aio_pthread.c +++ b/source3/modules/vfs_aio_pthread.c @@ -55,7 +55,17 @@ static void aio_pthread_handle_completion(struct event_context *event_ctx, static int aio_get_num_threads(void) { - return 10; + int num_cores = sys_get_number_of_cores(); + DEBUG(10,("aio_get_num_threads: sys_get_number_of_cores " + "returned %d\n", + num_cores)); + num_cores *= 2; + if (num_cores < 1) { + num_cores = 1; + } + /* Even on a single processor box give a little + concurrency. */ + return MIN(4,num_cores); } #if 0 @@ -102,7 +112,7 @@ static bool init_aio_threadpool(void) { struct fd_event *sock_event = NULL; int ret = 0; - int num_threads = aio_get_num_threads(); + int num_threads; #if 0 struct timeval ne; #endif @@ -111,6 +121,7 @@ static bool init_aio_threadpool(void) return true; } + num_threads = aio_get_num_threads(); ret = pthreadpool_init(num_threads, &pool); if (ret) { errno = ret; |