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RTT penalization was not happening for the nonresponding servers in

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the very common case where some server responded with the answer.
This would prevent avoidance of the nonresponding servers,
significantly increasing latency.
This commit is contained in:
Bob Halley 2000-02-11 19:58:11 +00:00
parent 90839d60d2
commit b599cfd793
1 changed files with 9 additions and 4 deletions
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13
lib/dns/resolver.c
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@ -420,9 +420,9 @@ fctx_cleanupforwaddrs(fetchctx_t *fctx) {
}
static inline void
fctx_stopeverything(fetchctx_t *fctx) {
fctx_stopeverything(fetchctx_t *fctx, isc_boolean_t no_response) {
FCTXTRACE("stopeverything");
fctx_cancelqueries(fctx, ISC_FALSE);
fctx_cancelqueries(fctx, no_response);
fctx_cleanupfinds(fctx);
fctx_cleanupforwaddrs(fctx);
fctx_stoptimer(fctx);
@ -456,12 +456,17 @@ fctx_sendevents(fetchctx_t *fctx, isc_result_t result) {
static void
fctx_done(fetchctx_t *fctx, isc_result_t result) {
dns_resolver_t *res;
isc_boolean_t no_response;
FCTXTRACE("done");
res = fctx->res;
fctx_stopeverything(fctx);
if (result == ISC_R_SUCCESS)
no_response = ISC_TRUE;
else
no_response = ISC_FALSE;
fctx_stopeverything(fctx, no_response);
LOCK(&res->buckets[fctx->bucketnum].lock);
@ -1604,7 +1609,7 @@ fctx_doshutdown(isc_task_t *task, isc_event_t *event) {
INSIST(fctx->want_shutdown);
if (fctx->state != fetchstate_done) {
fctx_stopeverything(fctx);
fctx_stopeverything(fctx, ISC_FALSE);
fctx->state = fetchstate_done;
fctx_sendevents(fctx, ISC_R_CANCELED);
}