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2019. [tuning] Reduce the amount of work performed per quantum

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when cleaning the cache. [RT #15986]
This commit is contained in:
Mark Andrews
2006-05-16 03:54:35 +00:00
parent dc1f18f211
commit b66ca17f29
2 changed files with 8 additions and 4 deletions
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3
CHANGES
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@@ -1,3 +1,6 @@
2019. [tuning] Reduce the amount of work performed per quantum
when cleaning the cache. [RT #15986]
2018. [bug] Checking if the HMAC MD5 private file was broken. 2018. [bug] Checking if the HMAC MD5 private file was broken.
[RT #15960] [RT #15960]

9
lib/dns/cache.c
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@@ -15,7 +15,7 @@
* PERFORMANCE OF THIS SOFTWARE. * PERFORMANCE OF THIS SOFTWARE.
*/ */
/* $Id: cache.c,v 1.69 2006/05/04 02:24:06 marka Exp $ */ /* $Id: cache.c,v 1.70 2006/05/16 03:54:35 marka Exp $ */
/*! \file */ /*! \file */
@@ -212,15 +212,16 @@ adjust_increment(cache_cleaner_t *cleaner, unsigned int remaining,
} }
new = (names * interval); new = (names * interval);
new /= usecs; new /= (usecs * 2);
if (new == 0) if (new == 0)
new = 1; new = 1;
else if (new > DNS_CACHE_CLEANERINCREMENT)
new = DNS_CACHE_CLEANERINCREMENT;
/* Smooth */ /* Smooth */
new = (new + cleaner->increment * 7) / 8; new = (new + cleaner->increment * 7) / 8;
if (new > DNS_CACHE_CLEANERINCREMENT)
new = DNS_CACHE_CLEANERINCREMENT;
cleaner->increment = (unsigned int)new; cleaner->increment = (unsigned int)new;
isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, DNS_LOGMODULE_CACHE, isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, DNS_LOGMODULE_CACHE,