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Make sure KVM used by buffer cache doesn't exceed VM_MAX_KERNEL_BUF.

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XXX stopgap measure.
This commit is contained in:
fvdl 1996-12-09 22:51:55 +00:00
parent 3dc301ff58
commit b3418365a1
1 changed files with 9 additions and 1 deletions
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10
sys/arch/i386/i386/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.217 1996/12/06 22:27:40 fvdl Exp $ */
/* $NetBSD: machdep.c,v 1.218 1996/12/09 22:51:55 fvdl Exp $ */
/*-
* Copyright (c) 1993, 1994, 1995, 1996 Charles M. Hannum. All rights reserved.
@ -402,6 +402,14 @@ allocsys(v)
if (nbuf < 16)
nbuf = 16;
}
/*
* XXX stopgap measure to prevent wasting too much KVM on
* the sparsely filled buffer cache.
*/
if (nbuf * MAXBSIZE > VM_MAX_KERNEL_BUF)
nbuf = VM_MAX_KERNEL_BUF / MAXBSIZE;
if (nswbuf == 0) {
nswbuf = (nbuf / 2) &~ 1; /* force even */
if (nswbuf > 256)