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conncache: connection alive checks intervals

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Do not check if a particular connection is alive or not more than once
every second. We did this on every connection reuse which is overkill
when sending many requests to the same host.

Closes #22169
This commit is contained in:
Stefan Eissing 2026-06-25 13:25:35 +02:00 • committed by Daniel Stenberg
parent 00d5562650
commit 2f1e94eaed
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GPG key ID: 5CC908FDB71E12C2
4 changed files with 19 additions and 7 deletions
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9
lib/conncache.c
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@ -687,6 +687,7 @@ void Curl_conn_terminate(struct Curl_easy *data,
struct cpool_reaper_ctx {
size_t checked;
size_t reaped;
struct curltime now;
};
static int cpool_reap_dead_cb(struct Curl_easy *data,
@ -697,7 +698,7 @@ static int cpool_reap_dead_cb(struct Curl_easy *data,
if(!terminate) {
reaper->checked++;
terminate = Curl_conn_seems_dead(conn, data);
terminate = Curl_conn_seems_dead(conn, data, &reaper->now);
}
if(terminate) {
/* stop the iteration here, pass back the connection that was pruned */
@ -718,17 +719,19 @@ static int cpool_reap_dead_cb(struct Curl_easy *data,
void Curl_cpool_prune_dead(struct Curl_easy *data)
{
struct cpool *cpool = cpool_get_instance(data);
struct cpool_reaper_ctx reaper;
timediff_t elapsed;
if(!cpool)
return;
memset(&reaper, 0, sizeof(reaper));
CPOOL_LOCK(cpool, data);
elapsed = curlx_ptimediff_ms(Curl_pgrs_now(data), &cpool->last_cleanup);
if(elapsed >= 1000L) {
struct cpool_reaper_ctx reaper;
memset(&reaper, 0, sizeof(reaper));
reaper.now = *Curl_pgrs_now(data);
while(cpool_foreach(data, cpool, &reaper, cpool_reap_dead_cb))
;
cpool->last_cleanup = *Curl_pgrs_now(data);