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Improve the locality of reference for variables in vm_page and

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vm_kern by moving them from .bss to .data.  With this change,
there is a measurable perf improvement in fork/exec.
This commit is contained in:
John Dyson 1996-11-17 02:38:31 +00:00
parent 5f4cf81e9d
commit 5b0a74089d
2 changed files with 27 additions and 27 deletions
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28
sys/vm/vm_kern.c
View File

@ -61,7 +61,7 @@
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* $Id: vm_kern.c,v 1.26 1996/05/23 02:24:55 dyson Exp $
* $Id: vm_kern.c,v 1.27 1996/07/02 02:08:02 dyson Exp $
*/
/*
@ -89,19 +89,19 @@
#include <vm/vm_kern.h>
#include <vm/vm_extern.h>
vm_map_t buffer_map;
vm_map_t kernel_map;
vm_map_t kmem_map;
vm_map_t mb_map;
int mb_map_full;
vm_map_t mcl_map;
int mcl_map_full;
vm_map_t io_map;
vm_map_t clean_map;
vm_map_t phys_map;
vm_map_t exec_map;
vm_map_t exech_map;
vm_map_t u_map;
vm_map_t kernel_map=0;
vm_map_t kmem_map=0;
vm_map_t exec_map=0;
vm_map_t exech_map=0;
vm_map_t clean_map=0;
vm_map_t u_map=0;
vm_map_t buffer_map=0;
vm_map_t mb_map=0;
int mb_map_full=0;
vm_map_t mcl_map=0;
int mcl_map_full=0;
vm_map_t io_map=0;
vm_map_t phys_map=0;
/*
* kmem_alloc_pageable:

26
sys/vm/vm_page.c
View File

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)vm_page.c 7.4 (Berkeley) 5/7/91
* $Id: vm_page.c,v 1.69 1996/10/15 03:16:45 dyson Exp $
* $Id: vm_page.c,v 1.70 1996/11/05 04:19:08 dyson Exp $
*/
/*
@ -98,16 +98,16 @@ static struct pglist *vm_page_buckets; /* Array of buckets */
static int vm_page_bucket_count; /* How big is array? */
static int vm_page_hash_mask; /* Mask for hash function */
struct pglist vm_page_queue_free[PQ_L2_SIZE];
struct pglist vm_page_queue_zero[PQ_L2_SIZE];
struct pglist vm_page_queue_active;
struct pglist vm_page_queue_inactive;
struct pglist vm_page_queue_cache[PQ_L2_SIZE];
struct pglist vm_page_queue_free[PQ_L2_SIZE] = {0};
struct pglist vm_page_queue_zero[PQ_L2_SIZE] = {0};
struct pglist vm_page_queue_active = {0};
struct pglist vm_page_queue_inactive = {0};
struct pglist vm_page_queue_cache[PQ_L2_SIZE] = {0};
int no_queue;
int no_queue=0;
struct vpgqueues vm_page_queues[PQ_COUNT];
int pqcnt[PQ_COUNT];
struct vpgqueues vm_page_queues[PQ_COUNT] = {0};
int pqcnt[PQ_COUNT] = {0};
static void
vm_page_queue_init(void) {
@ -142,13 +142,13 @@ vm_page_queue_init(void) {
}
}
vm_page_t vm_page_array;
int vm_page_array_size;
long first_page;
vm_page_t vm_page_array = 0;
int vm_page_array_size = 0;
long first_page = 0;
static long last_page;
static vm_size_t page_mask;
static int page_shift;
int vm_page_zero_count;
int vm_page_zero_count = 0;
/*
* map of contiguous valid DEV_BSIZE chunks in a page