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Try to dynamically size the VM_KMEM_SIZE (but is still able to be overridden

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in a way identically as before.)  I had problems with the system properly
handling the number of vnodes when there is alot of system memory, and the
default VM_KMEM_SIZE.  Two new options "VM_KMEM_SIZE_SCALE" and
"VM_KMEM_SIZE_MAX" have been added to support better auto-sizing for systems
with greater than 128MB.

Add some accouting for vm_zone memory allocations, and provide properly
for vm_zone allocations out of the kmem_map.  Also move the vm_zone
allocation stats to the VM OID tree from the KERN OID tree.
This commit is contained in:
John Dyson 1998-02-23 07:42:43 +00:00
parent 8a58a9f6c9
commit d9bed5bee1
4 changed files with 56 additions and 7 deletions
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20
sys/amd64/include/vmparam.h
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* from: @(#)vmparam.h 5.9 (Berkeley) 5/12/91
* $Id: vmparam.h,v 1.27 1997/10/27 00:38:46 jkh Exp $
* $Id: vmparam.h,v 1.28 1998/02/05 03:31:53 dyson Exp $
*/
@ -117,7 +117,23 @@
/* virtual sizes (bytes) for various kernel submaps */
#ifndef VM_KMEM_SIZE
#define VM_KMEM_SIZE (32 * 1024 * 1024)
#define VM_KMEM_SIZE (12 * 1024 * 1024)
#endif
/*
* How many physical pages per KVA page allocated.
* min(max(VM_KMEM_SIZE, Physical memory/VM_KMEM_SIZE_SCALE), VM_KMEM_SIZE_MAX)
* is the total KVA space allocated for kmem_map.
*/
#ifndef VM_KMEM_SIZE_SCALE
#define VM_KMEM_SIZE_SCALE (3)
#endif
/*
* Ceiling on amount of kmem_map kva space.
*/
#ifndef VM_KMEM_SIZE_MAX
#define VM_KMEM_SIZE_MAX (80 * 1024 * 1024)
#endif
/* initial pagein size of beginning of executable file */

7
sys/conf/options
View File

@ -1,4 +1,4 @@
# $Id: options,v 1.60 1998/02/12 18:02:04 eivind Exp $
# $Id: options,v 1.61 1998/02/16 23:57:33 eivind Exp $
# Format:
# Option name filename
@ -175,3 +175,8 @@ SI_DEBUG opt_debug_si.h
DEBUG opt_global.h
DIAGNOSTIC opt_global.h
SIMPLELOCK_DEBUG opt_global.h
# These are VM related options
VM_KMEM_SIZE opt_vm.h
VM_KMEM_SIZE_SCALE opt_vm.h
VM_KMEM_SIZE_MAX opt_vm.h

20
sys/i386/include/vmparam.h
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* from: @(#)vmparam.h 5.9 (Berkeley) 5/12/91
* $Id: vmparam.h,v 1.27 1997/10/27 00:38:46 jkh Exp $
* $Id: vmparam.h,v 1.28 1998/02/05 03:31:53 dyson Exp $
*/
@ -117,7 +117,23 @@
/* virtual sizes (bytes) for various kernel submaps */
#ifndef VM_KMEM_SIZE
#define VM_KMEM_SIZE (32 * 1024 * 1024)
#define VM_KMEM_SIZE (12 * 1024 * 1024)
#endif
/*
* How many physical pages per KVA page allocated.
* min(max(VM_KMEM_SIZE, Physical memory/VM_KMEM_SIZE_SCALE), VM_KMEM_SIZE_MAX)
* is the total KVA space allocated for kmem_map.
*/
#ifndef VM_KMEM_SIZE_SCALE
#define VM_KMEM_SIZE_SCALE (3)
#endif
/*
* Ceiling on amount of kmem_map kva space.
*/
#ifndef VM_KMEM_SIZE_MAX
#define VM_KMEM_SIZE_MAX (80 * 1024 * 1024)
#endif
/* initial pagein size of beginning of executable file */

16
sys/vm/vm_zone.c
View File

@ -11,7 +11,7 @@
* 2. Absolutely no warranty of function or purpose is made by the author
* John S. Dyson.
*
* $Id: vm_zone.c,v 1.17 1998/02/06 12:14:29 eivind Exp $
* $Id: vm_zone.c,v 1.18 1998/02/09 06:11:36 eivind Exp $
*/
#include <sys/param.h>
@ -51,6 +51,7 @@ static MALLOC_DEFINE(M_ZONE, "ZONE", "Zone header");
static struct vm_zone *zlist;
static int sysctl_vm_zone SYSCTL_HANDLER_ARGS;
static int zone_kmem_pages, zone_kern_pages, zone_kmem_kvaspace;
/*
* Create a zone, but don't allocate the zone structure. If the
@ -108,6 +109,7 @@ zinitna(vm_zone_t z, vm_object_t obj, char *name, int size,
if (z->zflags & ZONE_INTERRUPT) {
totsize = round_page(z->zsize * nentries);
zone_kmem_kvaspace += totsize;
z->zkva = kmem_alloc_pageable(kernel_map, totsize);
if (z->zkva == 0)
@ -302,6 +304,7 @@ _zget(vm_zone_t z)
pmap_kenter(zkva, VM_PAGE_TO_PHYS(m));
bzero((caddr_t) zkva, PAGE_SIZE);
z->zpagecount++;
zone_kmem_pages++;
}
nitems = (i * PAGE_SIZE) / z->zsize;
} else {
@ -324,9 +327,11 @@ _zget(vm_zone_t z)
int s;
s = splvm();
item = (void *) kmem_malloc(kmem_map, nbytes, M_WAITOK);
zone_kmem_pages += z->zalloc;
splx(s);
} else {
item = (void *) kmem_alloc(kernel_map, nbytes);
zone_kern_pages += z->zalloc;
}
bzero(item, nbytes);
nitems = nbytes / z->zsize;
@ -438,5 +443,12 @@ zerror(int error)
}
#endif
SYSCTL_OID(_kern, OID_AUTO, zone, CTLTYPE_STRING|CTLFLAG_RD, \
SYSCTL_OID(_vm, OID_AUTO, zone, CTLTYPE_STRING|CTLFLAG_RD, \
NULL, 0, sysctl_vm_zone, "A", "Zone Info");
SYSCTL_INT(_vm, OID_AUTO, zone_kmem_pages,
CTLFLAG_RD, &zone_kmem_pages, 0, "");
SYSCTL_INT(_vm, OID_AUTO, zone_kmem_kvaspace,
CTLFLAG_RD, &zone_kmem_kvaspace, 0, "");
SYSCTL_INT(_vm, OID_AUTO, zone_kern_pages,
CTLFLAG_RD, &zone_kern_pages, 0, "");