diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 1996-12-14 15:37:17 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 1996-12-14 15:37:17 +0000 |
| commit | 6e357f3781a3a8148a086de0369435a850c7f81b (patch) | |
| tree | 24b4e5787443fdc0722a8377222ff3f285be1920 /sys/arch/sparc | |
| parent | cf7b0390212aacc960029c5267c56ae1734db7c3 (diff) | |
clamp kvm useage
Diffstat (limited to 'sys/arch/sparc')
| -rw-r--r-- | sys/arch/sparc/sparc/machdep.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/sys/arch/sparc/sparc/machdep.c b/sys/arch/sparc/sparc/machdep.c index 03dc4fc1a3b..e2b195565b3 100644 --- a/sys/arch/sparc/sparc/machdep.c +++ b/sys/arch/sparc/sparc/machdep.c @@ -324,18 +324,30 @@ allocsys(v) valloc(msqids, struct msqid_ds, msginfo.msgmni); #endif +#ifndef BUFCACHEPERCENT +#define BUFCACHEPERCENT 5 +#endif /* * Determine how many buffers to allocate (enough to * hold 5% of total physical memory, but at least 16). * Allocate 1/2 as many swap buffer headers as file i/o buffers. */ if (bufpages == 0) - bufpages = (physmem / 20) / CLSIZE; + bufpages = (physmem / ((100/BUFCACHEPERCENT) / CLSIZE)); + /* Restrict to at most 70% filled kvm */ + if (bufpages * MAXBSIZE > + (VM_MAX_KERNEL_ADDRESS-VM_MIN_KERNEL_ADDRESS) * 7 / 10) + bufpages = (VM_MAX_KERNEL_ADDRESS-VM_MIN_KERNEL_ADDRESS) / + MAXBSIZE * 7 / 10; if (nbuf == 0) { nbuf = bufpages; if (nbuf < 16) nbuf = 16; } +#if defined(SUN4C) || defined(SUN4) + if ((CPU_ISSUN4C || CPU_ISSUN4) && nbuf > 200) + nbuf = 200; +#endif if (nswbuf == 0) { nswbuf = (nbuf / 2) &~ 1; /* force even */ if (nswbuf > 256) |