d/freebsd-nq
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Make the default cache size optim to be 256K, the old default was

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64K.  The change has essentially neutral effect on those machines with
little or no cache, and has a positive effect on "normal" machines
with 256K or more cache.
This commit is contained in:
John Dyson 1996-10-06 22:26:13 +00:00
parent 353ef7f927
commit 853a7bc893
1 changed files with 10 additions and 9 deletions
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19
sys/vm/vm_page.h
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@ -61,7 +61,7 @@
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* $Id: vm_page.h,v 1.31 1996/07/30 03:08:17 dyson Exp $
* $Id: vm_page.h,v 1.32 1996/09/08 20:44:46 dyson Exp $
*/
/*
@ -134,13 +134,6 @@ struct vm_page {
#define PQ_L1_SIZE 2 /* Two page L1 cache */
#endif
#if defined(PQ_MEDIUMCACHE)
#define PQ_PRIME1 13 /* Prime number somewhat less than PQ_HASH_SIZE */
#define PQ_PRIME2 7 /* Prime number somewhat less than PQ_HASH_SIZE */
#define PQ_PRIME3 5 /* Prime number somewhat less than PQ_HASH_SIZE */
#define PQ_L2_SIZE 64 /* A number of colors opt for 256K cache */
#define PQ_L1_SIZE 2 /* Two page L1 cache */
#endif
/*
* Use 'options PQ_NOOPT' to disable page coloring
@ -153,7 +146,7 @@ struct vm_page {
#define PQ_L1_SIZE 1
#endif
#if defined(PQ_NORMALCACHE) || !defined(PQ_L2_SIZE)
#if defined(PQ_NORMALCACHE)
#define PQ_PRIME1 5 /* Prime number somewhat less than PQ_HASH_SIZE */
#define PQ_PRIME2 3 /* Prime number somewhat less than PQ_HASH_SIZE */
#define PQ_PRIME3 11 /* Prime number somewhat less than PQ_HASH_SIZE */
@ -161,6 +154,14 @@ struct vm_page {
#define PQ_L1_SIZE 2 /* Two page L1 cache */
#endif
#if defined(PQ_MEDIUMCACHE) || !defined(PQ_L2_SIZE)
#define PQ_PRIME1 13 /* Prime number somewhat less than PQ_HASH_SIZE */
#define PQ_PRIME2 7 /* Prime number somewhat less than PQ_HASH_SIZE */
#define PQ_PRIME3 5 /* Prime number somewhat less than PQ_HASH_SIZE */
#define PQ_L2_SIZE 64 /* A number of colors opt for 256K cache */
#define PQ_L1_SIZE 2 /* Two page L1 cache */
#endif
#define PQ_L2_MASK (PQ_L2_SIZE - 1)
#define PQ_NONE 0