Date: Mon, 2 Feb 2004 20:55:24 -0800 (PST) From: Robert Watson <rwatson@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern sys_pipe.c Message-ID: <200402030455.i134tO4I084227@repoman.freebsd.org>
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rwatson 2004/02/02 20:55:24 PST
FreeBSD src repository
Modified files:
sys/kern sys_pipe.c
Log:
Don't dec/inc the amountpipes counter every time we resize a pipe --
instead, just dec/inc in the ctor/dtor. For now, increment/decrement
in two's, since we're now performing the operation once per pair,
not once per pipe. Not really any measurable performance change
in my micro-benchmarks, but doing less work is good, especially when
it comes to atomic operations.
Suggested by: alc
Revision Changes Path
1.167 +3 -2 src/sys/kern/sys_pipe.c
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