Excerpts from Shadowfirebird's message of Fri Oct 22 21:56:07 +0200 2010: > > Are you getting different timings for the same thread (remember to flush > > all OS level caches to check this) or are some threads always slow? > > It seems pretty random, but how do I flush my caches? From [1]: >> drop_caches >> Writing to this will cause the kernel to drop clean caches, dentries >> and inodes from memory, causing that memory to become free. >> To free pagecache: >> echo 1 > /proc/sys/vm/drop_caches >> To free dentries and inodes: >> echo 2 > /proc/sys/vm/drop_caches >> To free pagecache, dentries and inodes: >> echo 3 > /proc/sys/vm/drop_caches >> As this is a non-destructive operation and dirty objects are not >> freeable, the user should run `sync' first. Sascha [1] http://www.kernel.org/doc/Documentation/sysctl/vm.txt -- http://sascha.silbe.org/ http://www.infra-silbe.de/
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