| commit | f56151fa43e3b9a933b2c10ac2bbab0421823e12 | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Mon, 23 Apr 2018 02:29:58 +0000 (22 19:29 -0700) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Mon, 23 Apr 2018 02:31:28 +0000 (22 19:31 -0700) | ||
| tree | 3b37cc0091ea558f39877998005f29313aa4f67c | treesnapshot (tar.gz zip) |
| parent | 024f2ea16950750d30b44d25b65ea1d88634b807 | commitdiff |
libthread_xu - Improve contended mutex code
* Retry a few times in a loop before using the umtx*() system
calls to sleep.
This significantly reduces IPI traffic and improves performance
when a mutex is heavily contended.
* Retry a few times in a loop before using the umtx*() system
calls to sleep.
This significantly reduces IPI traffic and improves performance
when a mutex is heavily contended.
| lib/libthread_xu/thread/thr_umtx.c | diffblobblamehistory | |
| lib/libthread_xu/thread/thr_umtx.h | diffblobblamehistory |