Re: [COMMITTERS] pgsql: Remove pgbench "progress" test pendingsolution of its timing is

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От Andres Freund
Тема Re: [COMMITTERS] pgsql: Remove pgbench "progress" test pendingsolution of its timing is
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Msg-id 20170923180431.w6mfwpcra5el5j2a@alap3.anarazel.de
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Ответ на Re: [COMMITTERS] pgsql: Remove pgbench "progress" test pendingsolution of its timing is  (Fabien COELHO <coelho@cri.ensmp.fr>)
Ответы Re: [COMMITTERS] pgsql: Remove pgbench "progress" test pendingsolution of its timing is
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Hi,

On 2017-09-23 19:57:40 +0200, Fabien COELHO wrote:
> According to the trace, the host was so loaded that it could not do anything
> for over two seconds, so that the first output is "progress: 2.6", i.e. the
> 0 thread did not get any significant time for the first 2.6 seconds... of a
> 1 second test. Hmmm, not very kind.
> 
> Somehow this cannot be helped: if the system does not give any execution
> time to some pgbench thread, the expected output cannot be there.

skink runs postgres under valgrind, so it's going to be slower.


> If the test must run even when postgres doesn't, it is a little bit hard as
> a starting assumption for a benchmarking tool:-(

I'm unsure what the point of this is.  It's not like we discussing
removing pgbench, we're talking about an unreliable test.

Greetings,

Andres Freund


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