On 13 October 2015 at 07:54, Ben Turner <bturner@xxxxxxxxxx> wrote:
Random IO has vastly improved with MT epoll introduced in 3.7, try a test on 3.7 with server and client event threads set to 4. If you want to confirm this before you upgrade run top -H during your testing and look for a hot thread(single thread / CPU pegged at 100%). If you see this during your runs on 3.6 then the MT epoll implementation in 3.7 will def help you out.
Not 100%, but it gets up to 90%
Oddly, the feature list seems to show it as being done in 3.6 (http://www.gluster.org/community/documentation/index.php/Features/Feature_Smallfile_Perf#multi-thread-epoll)
Seems to be causing 3.7.4 to crash regularly at the moment to :(
--
Lindsay
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