Date: Sun, 19 Aug 2001 17:41:13 -0700 (PDT) From: Matt Dillon <dillon@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/boot/common loader.8 src/sys/conf options src/sys/i386/i386 machdep.c src/sys/i386/include param.h src/sys/kern subr_param.c src/sys/sys buf.h src/sys/vm swap_pager.c Message-ID: <200108200041.f7K0fD807805@freefall.freebsd.org>
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dillon 2001/08/19 17:41:13 PDT
Modified files:
sys/boot/common loader.8
sys/conf options
sys/i386/i386 machdep.c
sys/i386/include param.h
sys/kern subr_param.c
sys/sys buf.h
sys/vm swap_pager.c
Log:
Limit the amount of KVM reserved for the buffer cache and for swap-meta
information. The default limits only effect machines with > 1GB of ram
and can be overriden with two new kernel conf variables VM_SWZONE_SIZE_MAX
and VM_BCACHE_SIZE_MAX, or with loader variables kern.maxswzone and
kern.maxbcache. This has the effect of leaving more KVM available for
sizing NMBCLUSTERS and 'maxusers' and should avoid tripups where a sysad
adds memory to a machine and then sees the kernel panic on boot due to
running out of KVM.
Also change the default swap-meta auto-sizing calculation to allocate half
of what it was previously allocating. The prior defaults were way too high.
Note that we cannot afford to run out of swap-meta structures so we still
stay somewhat conservative here.
Revision Changes Path
1.31 +28 -1 src/sys/boot/common/loader.8
1.289 +3 -1 src/sys/conf/options
1.470 +7 -2 src/sys/i386/i386/machdep.c
1.60 +17 -1 src/sys/i386/include/param.h
1.43 +7 -1 src/sys/kern/subr_param.c
1.119 +3 -1 src/sys/sys/buf.h
1.163 +6 -3 src/sys/vm/swap_pager.c
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