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| author | peter <peter@FreeBSD.org> | 2001-08-23 01:30:51 +0000 |
|---|---|---|
| committer | peter <peter@FreeBSD.org> | 2001-08-23 01:30:51 +0000 |
| commit | baeea019edcb2de95c903ddc7f3f929a4343ce2e (patch) | |
| tree | 8c846ba41b93f0c1b356e02f9e2c3d9340ec7071 /sys/pc98/i386 | |
| parent | c5420ad0cd0fb582cf959d0f0e91b579cb8e7c87 (diff) | |
| download | FreeBSD-src-baeea019edcb2de95c903ddc7f3f929a4343ce2e.zip FreeBSD-src-baeea019edcb2de95c903ddc7f3f929a4343ce2e.tar.gz | |
Merge i386/machdep.c rev 1.470. Limit KVM for buffer cache etc.
Forgotten by: dillon
Diffstat (limited to 'sys/pc98/i386')
| -rw-r--r-- | sys/pc98/i386/machdep.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/pc98/i386/machdep.c b/sys/pc98/i386/machdep.c index 698a770..c983c7c 100644 --- a/sys/pc98/i386/machdep.c +++ b/sys/pc98/i386/machdep.c @@ -311,7 +311,9 @@ again: * The nominal buffer size (and minimum KVA allocation) is BKVASIZE. * For the first 64MB of ram nominally allocate sufficient buffers to * cover 1/4 of our ram. Beyond the first 64MB allocate additional - * buffers to cover 1/20 of our ram over 64MB. + * buffers to cover 1/20 of our ram over 64MB. When auto-sizing + * the buffer cache we limit the eventual kva reservation to + * maxbcache bytes. * * factor represents the 1/4 x ram conversion. */ @@ -323,6 +325,9 @@ again: nbuf += min((physmem_est - 1024) / factor, 16384 / factor); if (physmem_est > 16384) nbuf += (physmem_est - 16384) * 2 / (factor * 5); + + if (maxbcache && nbuf > physmem_est / BKVASIZE) + nbuf = maxbcache / BKVASIZE; } /* |
