| From: | Heikki Linnakangas <heikki(dot)linnakangas(at)iki(dot)fi> |
|---|---|
| To: | pgsql-committers(at)postgresql(dot)org |
| Subject: | pgsql: Fix busy-wait in pgbench, with --rate. |
| Date: | 2017-10-01 06:37:42 |
| Message-ID: | E1dyXsk-0000nO-4D@gemulon.postgresql.org |
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| Thread: | |
| Lists: | pgsql-committers |
Fix busy-wait in pgbench, with --rate.
If --rate was used to throttle pgbench, it failed to sleep when it had
nothing to do, leading to a busy-wait with 100% CPU usage. This bug was
introduced in the refactoring in v10. Before that, sleep() was called with
a timeout, even when there were no file descriptors to wait for.
Reported by Jeff Janes, patch by Fabien COELHO. Backpatch to v10.
Branch
------
REL_10_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/babf18579455e85269ad75e1ddb03f34138f77b6
Modified Files
--------------
src/bin/pgbench/pgbench.c | 26 ++++++++++++++++++--------
1 file changed, 18 insertions(+), 8 deletions(-)
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