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Date: Tue, 4 Mar 2008 00:51:49 -0500
From: Garrett Wollman <wollman@FreeBSD.org>
To: Jeff Roberson <jroberson@chesapeake.net>
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Subject: Re: cvs commit: src/sys/kern sched_ule.c
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<<On Sat, 1 Mar 2008 22:29:50 -1000 (HST), Jeff Roberson <jroberson@chesapeake.net> said:

> Kris has done some excellent benchmarking as usual.  Here you can see the 
> improvement in postgres depending on various scheduler debug settings:

> http://people.freebsd.org/~kris/scaling/pgsql-16cpu.png

Can you comment on the area under the knee in the 8-cpu topologies?  I
seems surprising that 16 cores performs worse than 8 cores in this
regime.

-GAWollman