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Code Issues Releases Activity

Raised minimum buffer cache from 128k to 256k.

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This commit is contained in:
David Greenman 1993-12-22 13:12:04 +00:00
parent 33811d39ec
commit bb54009a35
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=911
2 changed files with 12 additions and 12 deletions
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12
sys/amd64/amd64/machdep.c
View File

@ -35,7 +35,7 @@
* SUCH DAMAGE.
*
* from: @(#)machdep.c 7.4 (Berkeley) 6/3/91
* $Id: machdep.c,v 1.21 1993/12/12 12:22:56 davidg Exp $
* $Id: machdep.c,v 1.22 1993/12/19 00:50:03 wollman Exp $
*/
#include "npx.h"
@ -211,9 +211,9 @@ again:
* We allocate 1/2 as many swap buffer headers as file i/o buffers.
*/
if (bufpages == 0)
bufpages = ((physmem << PGSHIFT) - 3072*1024) / NBPG / 5;
if (bufpages < 32)
bufpages = 32;
bufpages = ((physmem << PGSHIFT) - 2048*1024) / NBPG / 5;
if (bufpages < 64)
bufpages = 64;
/*
* We must still limit the maximum number of buffers to be no
@ -223,8 +223,8 @@ again:
bufpages = min(bufpages, (VM_KMEM_SIZE / NBPG) * 2 / 5);
if (nbuf == 0) {
nbuf = bufpages / 2;
if (nbuf < 16)
nbuf = 16;
if (nbuf < 32)
nbuf = 32;
}
freebufspace = bufpages * NBPG;
if (nswbuf == 0) {

12
sys/i386/i386/machdep.c
View File

@ -35,7 +35,7 @@
* SUCH DAMAGE.
*
* from: @(#)machdep.c 7.4 (Berkeley) 6/3/91
* $Id: machdep.c,v 1.21 1993/12/12 12:22:56 davidg Exp $
* $Id: machdep.c,v 1.22 1993/12/19 00:50:03 wollman Exp $
*/
#include "npx.h"
@ -211,9 +211,9 @@ again:
* We allocate 1/2 as many swap buffer headers as file i/o buffers.
*/
if (bufpages == 0)
bufpages = ((physmem << PGSHIFT) - 3072*1024) / NBPG / 5;
if (bufpages < 32)
bufpages = 32;
bufpages = ((physmem << PGSHIFT) - 2048*1024) / NBPG / 5;
if (bufpages < 64)
bufpages = 64;
/*
* We must still limit the maximum number of buffers to be no
@ -223,8 +223,8 @@ again:
bufpages = min(bufpages, (VM_KMEM_SIZE / NBPG) * 2 / 5);
if (nbuf == 0) {
nbuf = bufpages / 2;
if (nbuf < 16)
nbuf = 16;
if (nbuf < 32)
nbuf = 32;
}
freebufspace = bufpages * NBPG;
if (nswbuf == 0) {