Date: Sun, 9 Feb 2003 09:04:57 -0800 (PST) From: Poul-Henning Kamp <phk@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org, legacy-committers@FreeBSD.org Subject: cvs commit: src/sys/geom geom_io.c geom_kern.c geom_stats.h notes Message-ID: <200302091704.h19H4vn9013754@repoman.freebsd.org>
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phk 2003/02/09 09:04:57 PST
Modified files:
sys/geom geom_io.c geom_kern.c geom_stats.h notes
Log:
Update the statistics collection code to track busy time instead of
idle time.
Statistics now default to "on" and can be turned off with
sysctl kern.geom.collectstats=0
Performance impact of statistics collection is on the order of
800 nsec per consumer/provider set on a 700MHz Athlon.
Revision Changes Path
1.27 +41 -39 src/sys/geom/geom_io.c
1.21 +1 -1 src/sys/geom/geom_kern.c
1.3 +35 -7 src/sys/geom/geom_stats.h
1.2 +48 -0 src/sys/geom/notes
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