Date: Fri, 23 Jul 2010 16:46:42 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/kern kern_cpu.c Message-ID: <201007231646.o6NGksIK079899@repoman.freebsd.org>
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avg 2010-07-23 16:46:42 UTC
FreeBSD src repository
Modified files:
sys/kern kern_cpu.c
Log:
SVN rev 210422 on 2010-07-23 16:46:42Z by avg
cpufreq: allocate long-lived buffer for handling of sysctl requests
At present the cpufreq sysctl handler for current level setting would
allocate and deallocate a temporary buffer of 24KB even to handle a
read-only query. This puts unnecessary load on memory subsystem when
current level is checked frequently, e.g. when the likes of powerd
and system monitoring software are running.
Change the strategy to allocating a long-lived buffer for handling the
requests.
Reviewed by: njl
MFC after: 2 weeks
Revision Changes Path
1.34 +6 -7 src/sys/kern/kern_cpu.c
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