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1911. [func] Attempt to make the amount of work performed in a

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iteration self tuning.  The covers nodes clean from
                        the cache per iteration, nodes written to disk when
                        rewriting a master file and nodes destroyed per
                        iteration when destroying a zone or a cache.
                        [RT #14996]
This commit is contained in:
Mark Andrews
2005-08-15 01:21:07 +00:00
parent 0831e2f4bd
commit 261a6a1f7d
10 changed files with 191 additions and 17 deletions
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30
lib/dns/masterdump.c
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@@ -15,7 +15,7 @@
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: masterdump.c,v 1.78 2005/06/20 01:03:53 marka Exp $ */
/* $Id: masterdump.c,v 1.79 2005/08/15 01:21:06 marka Exp $ */
/*! \file */
@@ -31,12 +31,14 @@
#include <isc/stdio.h>
#include <isc/string.h>
#include <isc/task.h>
#include <isc/time.h>
#include <isc/util.h>
#include <dns/db.h>
#include <dns/dbiterator.h>
#include <dns/events.h>
#include <dns/fixedname.h>
#include <dns/lib.h>
#include <dns/log.h>
#include <dns/master.h>
#include <dns/masterdump.h>
@@ -1261,6 +1263,7 @@ dumptostreaminc(dns_dumpctx_t *dctx) {
unsigned int nodes;
dns_masterrawheader_t rawheader;
isc_uint32_t now32;
isc_time_t start;
bufmem = isc_mem_get(dctx->mctx, initial_buffer_length);
if (bufmem == NULL)
@@ -1333,6 +1336,7 @@ dumptostreaminc(dns_dumpctx_t *dctx) {
result = ISC_R_SUCCESS;
nodes = dctx->nodes;
isc_time_now(&start);
while (result == ISC_R_SUCCESS && (dctx->nodes == 0 || nodes--)) {
dns_rdatasetiter_t *rdsiter = NULL;
dns_dbnode_t *node = NULL;
@@ -1367,6 +1371,30 @@ dumptostreaminc(dns_dumpctx_t *dctx) {
}
if (dctx->nodes != 0 && result == ISC_R_SUCCESS) {
unsigned int pps = dns_pps;
unsigned int interval;
isc_uint64_t usecs;
isc_time_t end;
isc_time_now(&end);
if (pps < 100)
pps = 100;
interval = 1000000 / pps;
if (interval == 0)
interval = 1;
usecs = isc_time_microdiff(&end, &start);
if (usecs == 0) {
dctx->nodes = dctx->nodes * 2;
if (dctx->nodes > 1000)
dctx->nodes = 1000;
} else {
dctx->nodes = dctx->nodes * interval;
dctx->nodes /= usecs;
if (dctx->nodes == 0)
dctx->nodes = 1;
else if (dctx->nodes > 1000)
dctx->nodes = 1000;
}
dns_dbiterator_pause(dctx->dbiter);
result = DNS_R_CONTINUE;
} else if (result == ISC_R_NOMORE)