lock contention - what can we do about it?

[Milian Wolff]

David Nolden, 05.03.2011:
> If the CPU time is below 100%, then that's for sure not due to lock
> contention, but simply due to I/O. Either repeat the test with the
> disk-cache better filled, or increase the number of threads.

If that would be the case, wouldn't iotop show lots of disk access? And top's 
%wa would be high, but it's rarely more than 2% for me (wa is iowait time).

-- 
Milian Wolff
mail at milianw.de
http://milianw.de
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