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| author | dillon <dillon@FreeBSD.org> | 2001-08-20 00:41:12 +0000 |
|---|---|---|
| committer | dillon <dillon@FreeBSD.org> | 2001-08-20 00:41:12 +0000 |
| commit | 05c33a209bd0403f851f4ffd54fe4d16a1a663ef (patch) | |
| tree | 4f3fc469468f6ff18e20f33a23a0fca03e1113be /sys/conf/options | |
| parent | 277945b1a7db16235f31ed390e6a74045bd62b5f (diff) | |
| download | FreeBSD-src-05c33a209bd0403f851f4ffd54fe4d16a1a663ef.zip FreeBSD-src-05c33a209bd0403f851f4ffd54fe4d16a1a663ef.tar.gz | |
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.
Diffstat (limited to 'sys/conf/options')
| -rw-r--r-- | sys/conf/options | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/conf/options b/sys/conf/options index 9721faa..6e62f52 100644 --- a/sys/conf/options +++ b/sys/conf/options @@ -173,6 +173,8 @@ MAXFILES opt_param.h NBUF opt_param.h NMBCLUSTERS opt_param.h NSFBUFS opt_param.h +VM_BCACHE_SIZE_MAX opt_param.h +VM_SWZONE_SIZE_MAX opt_param.h MAXUSERS # Generic SCSI options. |
