Date: Sat, 26 Jun 2004 23:27:42 +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/geom geom_io.c Message-ID: <200406262327.i5QNRgrC080318@repoman.freebsd.org>
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rwatson 2004-06-26 23:27:42 UTC
FreeBSD src repository
Modified files:
sys/geom geom_io.c
Log:
The g_up and g_down threads use a local 'mymutex' mutex to allow WITNESS
to warn about attempts to sleep in the I/O path. This change pushes the
definition and use of 'mymutex' behind #ifdef WITNESS to avoid the cost
in non-debugging cases. This results in a clear .22% performance win for
512 byte and 1k I/O tests on my SMP test box. Not much, but every bit
counts.
Revision Changes Path
1.56 +16 -0 src/sys/geom/geom_io.c
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