Re: Causeless CPU load waves in backend, on windows, 9.5.5 (EDB binary).

From: Nikolai Zhubr <n-a-zhubr(at)yandex(dot)ru>
To: Michael Paquier <michael(dot)paquier(at)gmail(dot)com>
Cc: PG-General Mailing List <pgsql-general(at)postgresql(dot)org>, Craig Ringer <craig(dot)ringer(at)2ndquadrant(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>
Subject: Re: Causeless CPU load waves in backend, on windows, 9.5.5 (EDB binary).
Date: 2017-01-31 08:45:33
Message-ID: 58904EAD.2040009@yandex.ru
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31.01.2017 10:37, I wrote:
> [...]
>>> 1. "select localtimestamp" 40 times (As separate requests, one by
>>> one, but
>>> no delay inserted in between)
>>> 2. wait 1/2 second.
>>> 3. goto 1
>>
>> Craig, could this be a side-effect of 519b0757? That's new in 9.5, and
>> that's directly related to the code paths discussed here.
>
> Meanwhile I'll redo my tests using 9.4 instead of 9.5 and report back.

Exactly same trouble with 9.4 (Specifically EDB 9.4.10-1 win32)

Would it make sense to check some even older ones?

Thank you.

Nikolai

>
> Thank you.
>
> Nikolai
>
>

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