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Merge pull request #4452 from soloestoy/expire-latency

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expire & latency: fix the missing latency records generated by expire
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Salvatore Sanfilippo 2017-11-24 18:21:35 +01:00 committed by GitHub
commit c508cb6793
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1 changed files with 11 additions and 8 deletions
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19
src/expire.c
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@ -103,7 +103,7 @@ void activeExpireCycle(int type) {
int j, iteration = 0;
int dbs_per_call = CRON_DBS_PER_CALL;
long long start = ustime(), timelimit;
long long start = ustime(), timelimit, elapsed;
/* When clients are paused the dataset should be static not just from the
* POV of clients not being able to write, but also from the POV of
@ -140,7 +140,7 @@ void activeExpireCycle(int type) {
if (type == ACTIVE_EXPIRE_CYCLE_FAST)
timelimit = ACTIVE_EXPIRE_CYCLE_FAST_DURATION; /* in microseconds. */
for (j = 0; j < dbs_per_call; j++) {
for (j = 0; j < dbs_per_call && timelimit_exit == 0; j++) {
int expired;
redisDb *db = server.db+(current_db % server.dbnum);
@ -155,6 +155,7 @@ void activeExpireCycle(int type) {
unsigned long num, slots;
long long now, ttl_sum;
int ttl_samples;
iteration++;
/* If there is nothing to expire try next DB ASAP. */
if ((num = dictSize(db->expires)) == 0) {
@ -207,18 +208,20 @@ void activeExpireCycle(int type) {
/* We can't block forever here even if there are many keys to
* expire. So after a given amount of milliseconds return to the
* caller waiting for the other active expire cycle. */
iteration++;
if ((iteration & 0xf) == 0) { /* check once every 16 iterations. */
long long elapsed = ustime()-start;
latencyAddSampleIfNeeded("expire-cycle",elapsed/1000);
if (elapsed > timelimit) timelimit_exit = 1;
elapsed = ustime()-start;
if (elapsed > timelimit) {
timelimit_exit = 1;
break;
}
}
if (timelimit_exit) return;
/* We don't repeat the cycle if there are less than 25% of keys
* found expired in the current DB. */
} while (expired > ACTIVE_EXPIRE_CYCLE_LOOKUPS_PER_LOOP/4);
}
elapsed = ustime()-start;
latencyAddSampleIfNeeded("expire-cycle",elapsed/1000);
}
/*-----------------------------------------------------------------------------