Date: Wed, 11 Aug 2004 01:34:18 +0000 (UTC) From: Robert Watson <rwatson@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/i386/conf GENERIC Message-ID: <200408110134.i7B1YI9Y045791@repoman.freebsd.org>
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rwatson 2004-08-11 01:34:18 UTC
FreeBSD src repository
Modified files:
sys/i386/conf GENERIC
Log:
Add ADAPTIVE_GIANT to GENERIC on i386, with the intent of making it
a standard configuration similar to [NO_]ADAPTIVE_MUTEXES. This
feature causes Giant to be included in the set of mutexes adaptively
spun on. It appears to have a positive effect on performance on SMP
across several workloads, including measurements of a 16% improvement
on buildworld, and 30%+ improvement for MySQL using the supersmack
benchmark with Giant over the network stack; a 6% improvement without
Giant on the network stack (as a result of less giant contention).
Revision Changes Path
1.413 +1 -0 src/sys/i386/conf/GENERIC
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