mysql performance on 4 * dualcore opteron

David Xu yfxu at
Sat Apr 8 05:15:46 UTC 2006

在 Thursday 06 April 2006 17:12,Michael Vince 写道:

> I have also done benchmarking with libthr against Apache using 'ab' and 
> found it can deliver an extra amount of megabytes/sec of data (I think 
> it was about an extra 2000/requests sec) at the cost of giving the 
> server from what I remember almost double the 'average load' according 
> to 'top'
> Given that if your machine has nothing else to do but deliver data 
> purely from Apache then even libthr is more worth while for Apache as well.
> Mike

libpthread default uses M:N threads which means a thread  may be on
userland scheduler's run queue, and FreeBSD kernel does not know, 
so it will be not shown on average load, default system tools are not
very useful here.

David Xu

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