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MEDIUM: checks: Stop scheduling healthchecks during stopping stage

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When the process is stopping, the health-checks are suspended. However the
task is still periodically woken up for nothing. If there is a huge number
of health-checks and if they are woken up in same time, it may lead to a
noticeable CPU consumption for no reason.

To avoid this extra CPU cost, we stop to schedule the health-check tasks
when the proxy is disabled or stopped.

This patch should partially solve the issue #2145.
This commit is contained in:
Christopher Faulet 2023-05-16 18:07:51 +02:00
parent 8a46f98615
commit 8bca3cc8c7
1 changed files with 7 additions and 2 deletions
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9
src/check.c
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@ -1327,8 +1327,13 @@ struct task *process_chk_conn(struct task *t, void *context, unsigned int state)
}
reschedule:
while (tick_is_expired(t->expire, now_ms))
t->expire = tick_add(t->expire, MS_TO_TICKS(check->inter));
if (proxy->flags & (PR_FL_DISABLED|PR_FL_STOPPED))
t->expire = TICK_ETERNITY;
else {
while (tick_is_expired(t->expire, now_ms))
t->expire = tick_add(t->expire, MS_TO_TICKS(check->inter));
}
out_unlock:
if (check->server)
HA_SPIN_UNLOCK(SERVER_LOCK, &check->server->lock);