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Waking up once a second to clean one bucket is excessive. Change the

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default values (and dependencies) so that the clenup routine is called once
ever 30 seconds and cleans 8-9 buckets.
This commit is contained in:
Brian Wellington
2001-01-26 03:20:58 +00:00
parent dfb0717d75
commit 7b5172166d
1 changed files with 6 additions and 15 deletions
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21
lib/dns/adb.c
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@@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: adb.c,v 1.165 2001/01/22 22:53:13 gson Exp $ */
/* $Id: adb.c,v 1.166 2001/01/26 03:20:58 bwelling Exp $ */
/*
* Implementation notes
@@ -76,8 +76,6 @@
* The number of buckets needs to be a prime (for good hashing).
*
* XXXRTH How many buckets do we need?
*
* This value must be coordinated with CLEAN_SECONDS (below).
*/
#define NBUCKETS 1009 /* how many buckets for names/addrs */
@@ -91,19 +89,12 @@
#define ADB_CACHE_MAXIMUM 86400 /* seconds (86400 = 24 hours) */
/*
* Clean CLEAN_BUCKETS buckets every CLEAN_SECONDS.
* Wake up every CLEAN_SECONDS and clean CLEAN_BUCKETS buckets, so that all
* buckets are cleaned in CLEAN_PERIOD seconds.
*/
#define CLEAN_PERIOD 3600 /* one pass through every N seconds */
#define CLEAN_BUCKETS ((NBUCKETS / CLEAN_PERIOD) + 0.5)
#if CLEAN_BUCKET < 1
#undef CLEAN_BUCKETS
#define CLEAN_BUCKETS 1
#endif
#define CLEAN_SECONDS (CLEAN_PERIOD * CLEAN_BUCKETS / NBUCKETS)
#if CLEAN_SECONDS < 1
#undef CLEAN_SECONDS
#define CLEAN_SECONDS 1
#endif
#define CLEAN_PERIOD 3600
#define CLEAN_SECONDS 30
#define CLEAN_BUCKETS ((NBUCKETS * CLEAN_SECONDS) / CLEAN_PERIOD)
#define FREE_ITEMS 64 /* free count for memory pools */
#define FILL_COUNT 16 /* fill count for memory pools */