Date: Thu, 18 Feb 1999 11:57:33 -0800 (PST) From: Matt Dillon <dillon@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/vm swap_pager.c Message-ID: <199902181957.LAA90564@freefall.freebsd.org>
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dillon 1999/02/18 11:57:33 PST
Modified files:
sys/vm swap_pager.c
Log:
Limit number of simultanious asynchronous swap pager I/Os that can
be in progress at any given moment.
Add two swap tuneables to sysctl:
vm.swap_async_max: 4
vm.swap_cluster_max: 16
Recommended values are a cluster size of 8 or 16 pages. async_max is
about right for 1-4 swap devices. Reduce to 2 if swap is eating too much
bandwidth, or even 1 if swap is both eating too much bandwidth and sitting
on a slow network (10BaseT).
The defaults work well across a broad range of configurations and should
normally be left alone.
Revision Changes Path
1.114 +109 -13 src/sys/vm/swap_pager.c
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