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MINOR: check/activity: collect some per-thread check activity stats

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We now count the number of times a check was started on each thread
and the number of times a check was adopted. This helps understand
better what is observed regarding checks.
This commit is contained in:
Willy Tarreau 2023-08-31 16:06:10 +02:00
parent e03d05c6ce
commit 3b7942a1c9
3 changed files with 10 additions and 1 deletions
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2
include/haproxy/activity-t.h
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@ -95,6 +95,7 @@ struct activity {
unsigned int long_rq; // process_runnable_tasks() left with tasks in the run queue
unsigned int cpust_total; // sum of half-ms stolen per thread
unsigned int fd_takeover; // number of times this thread stole another one's FD
unsigned int check_adopted;// number of times a check was migrated to this thread
ALWAYS_ALIGN(64);
struct freq_ctr cpust_1s; // avg amount of half-ms stolen over last second
@ -105,6 +106,7 @@ struct activity {
unsigned int accq_full; // accept queue connection not pushed because full
unsigned int pool_fail; // failed a pool allocation
unsigned int buf_wait; // waited on a buffer allocation
unsigned int check_started;// number of times a check was started on this thread
#if defined(DEBUG_DEV)
/* keep these ones at the end */
unsigned int ctr0; // general purposee debug counter

2
src/activity.c
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@ -1142,7 +1142,9 @@ static int cli_io_handler_show_activity(struct appctx *appctx)
#ifdef USE_THREAD
case __LINE__: SHOW_VAL("accq_ring:", accept_queue_ring_len(&accept_queue_rings[thr]), _tot); break;
case __LINE__: SHOW_VAL("fd_takeover:", activity[thr].fd_takeover, _tot); break;
case __LINE__: SHOW_VAL("check_adopted:",activity[thr].check_adopted, _tot); break;
#endif
case __LINE__: SHOW_VAL("check_started:",activity[thr].check_started, _tot); break;
#if defined(DEBUG_DEV)
/* keep these ones at the end */

7
src/check.c
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@ -1137,7 +1137,11 @@ struct task *process_chk_conn(struct task *t, void *context, unsigned int state)
*/
uint my_load = HA_ATOMIC_LOAD(&th_ctx->rq_total);
if (!(check->state & CHK_ST_READY) && my_load >= 2) {
if (check->state & CHK_ST_READY) {
/* check was migrated */
activity[tid].check_adopted++;
}
else if (my_load >= 2) {
uint new_tid = statistical_prng_range(global.nbthread);
uint new_load = HA_ATOMIC_LOAD(&ha_thread_ctx[new_tid].rq_total);
@ -1164,6 +1168,7 @@ struct task *process_chk_conn(struct task *t, void *context, unsigned int state)
/* OK let's run, now we cannot roll back anymore */
check->state |= CHK_ST_READY;
activity[tid].check_started++;
}
/* at this point, CHK_ST_SLEEPING = 0 and CHK_ST_READY = 1*/