diff options
| author | dg <dg@FreeBSD.org> | 1994-10-25 08:34:50 +0000 |
|---|---|---|
| committer | dg <dg@FreeBSD.org> | 1994-10-25 08:34:50 +0000 |
| commit | 5dc52e1f1e779f727b7767bdd562bd303db3df62 (patch) | |
| tree | 87a54b436e71baf7e418fece4ab76fae9e7dbefa | |
| parent | ce24706799ca18bc401f503cd7145cf0b08b969e (diff) | |
| download | FreeBSD-src-5dc52e1f1e779f727b7767bdd562bd303db3df62.zip FreeBSD-src-5dc52e1f1e779f727b7767bdd562bd303db3df62.tar.gz | |
Restricted maximum bufpages to 1500; this is required for machines >64MB
of memory to work without running out of kernel VM (and increasing it to
even more than it is now (96MB) is out of the question. Changed bufpages
calculation to allocation a little less bufer cache (16% of mem-2MB instead
of 20%); this is simply a better figure for most systems.
| -rw-r--r-- | sys/amd64/amd64/machdep.c | 9 | ||||
| -rw-r--r-- | sys/i386/i386/machdep.c | 9 |
2 files changed, 8 insertions, 10 deletions
diff --git a/sys/amd64/amd64/machdep.c b/sys/amd64/amd64/machdep.c index 2dac4d8..eb5b18c 100644 --- a/sys/amd64/amd64/machdep.c +++ b/sys/amd64/amd64/machdep.c @@ -35,7 +35,7 @@ * SUCH DAMAGE. * * from: @(#)machdep.c 7.4 (Berkeley) 6/3/91 - * $Id: machdep.c,v 1.77 1994/10/19 00:05:59 wollman Exp $ + * $Id: machdep.c,v 1.78 1994/10/20 00:07:49 phk Exp $ */ #include "npx.h" @@ -258,16 +258,15 @@ again: * We allocate 1/2 as many swap buffer headers as file i/o buffers. */ if (bufpages == 0) - bufpages = ((physmem << PGSHIFT) - 2048*1024) / NBPG / 5; + bufpages = ((physmem << PGSHIFT) - 2048*1024) / NBPG / 6; if (bufpages < 64) bufpages = 64; /* * We must still limit the maximum number of buffers to be no - * more than 2/5's of the size of the kernal malloc region, this - * will only take effect for machines with lots of memory + * more than 750 because we'll run out of kernel VM otherwise. */ - bufpages = min(bufpages, (VM_KMEM_SIZE / NBPG) * 2 / 5); + bufpages = min(bufpages, 1500); if (nbuf == 0) { nbuf = bufpages / 2; if (nbuf < 32) diff --git a/sys/i386/i386/machdep.c b/sys/i386/i386/machdep.c index 2dac4d8..eb5b18c 100644 --- a/sys/i386/i386/machdep.c +++ b/sys/i386/i386/machdep.c @@ -35,7 +35,7 @@ * SUCH DAMAGE. * * from: @(#)machdep.c 7.4 (Berkeley) 6/3/91 - * $Id: machdep.c,v 1.77 1994/10/19 00:05:59 wollman Exp $ + * $Id: machdep.c,v 1.78 1994/10/20 00:07:49 phk Exp $ */ #include "npx.h" @@ -258,16 +258,15 @@ again: * We allocate 1/2 as many swap buffer headers as file i/o buffers. */ if (bufpages == 0) - bufpages = ((physmem << PGSHIFT) - 2048*1024) / NBPG / 5; + bufpages = ((physmem << PGSHIFT) - 2048*1024) / NBPG / 6; if (bufpages < 64) bufpages = 64; /* * We must still limit the maximum number of buffers to be no - * more than 2/5's of the size of the kernal malloc region, this - * will only take effect for machines with lots of memory + * more than 750 because we'll run out of kernel VM otherwise. */ - bufpages = min(bufpages, (VM_KMEM_SIZE / NBPG) * 2 / 5); + bufpages = min(bufpages, 1500); if (nbuf == 0) { nbuf = bufpages / 2; if (nbuf < 32) |
