| From: | Pavan Deolasee <pavan(dot)deolasee(at)gmail(dot)com> |
|---|---|
| To: | Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr> |
| Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
| Subject: | Re: pgbench stuck with 100% cpu usage |
| Date: | 2017-09-29 05:36:38 |
| Message-ID: | CABOikdOajyAz6yuvu0nsDWT2gyrBCCD_WOxM3VMcZOc=efvAbA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Sep 29, 2017 at 12:22 AM, Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr> wrote:
>
> While running some tests, I encountered a situation where pgbench gets
>> stuck in an infinite loop, consuming 100% cpu. The setup was:
>>
>> - Start postgres server from the master branch
>> - Initialise pgbench
>> - Run pgbench -c 10 -T 100
>> - Stop postgres with -m immediate
>>
>
> That is a strange test to run, but it would be better if the behavior was
> not that one.
Well, I think it's a very legitimate test, not for testing performance, but
testing crash recovery and I use it very often. This particular test was
run to catch another bug which will be reported separately.
Thanks,
Pavan
--
Pavan Deolasee http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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