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Add background thread sleep retry in test/unit/hpa_background_thread

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Under high concurrency / heavy test load (e.g. using run_tests.sh), the
background thread may not get scheduled for a longer period of time.  Retry 100
times max before bailing out.
This commit is contained in:
Qi Wang 2022-01-06 17:46:55 -08:00 committed by Qi Wang
parent 61978bbe69
commit 6230cc88b6
1 changed files with 12 additions and 4 deletions
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16
test/unit/hpa_background_thread.c
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@ -4,8 +4,8 @@
static void
sleep_for_background_thread_interval() {
/*
* The sleep interval set in our .sh file is 50ms. So it should
* definitely run if we sleep for for times that.
* The sleep interval set in our .sh file is 50ms. So it likely will
* run if we sleep for four times that.
*/
sleep_ns(200 * 1000 * 1000);
}
@ -117,10 +117,18 @@ expect_purging(unsigned arena_ind, bool expect_deferred) {
}
}
expect_b_eq(expect_deferred, observed_dirty_page, "");
if (expect_deferred) {
/*
* Under high concurrency / heavy test load (e.g. using run_test.sh),
* the background thread may not get scheduled for a longer period of
* time. Retry 100 times max before bailing out.
*/
unsigned retry = 0;
while ((empty_ndirty = get_empty_ndirty(arena_ind)) > 0 &&
expect_deferred && (retry++ < 100)) {
sleep_for_background_thread_interval();
}
empty_ndirty = get_empty_ndirty(arena_ind);
expect_zu_eq(0, empty_ndirty, "Should have seen a background purge");
}