Re: pg_upgrade 8.3 to 9.0, shutdown is to slow

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От Kevin Grittner
Тема Re: pg_upgrade 8.3 to 9.0, shutdown is to slow
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Msg-id 4D4138530200002500039E7E@gw.wicourts.gov
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Ответ на Re: pg_upgrade 8.3 to 9.0, shutdown is to slow  (Bernhard Schrader <bernhard.schrader@innogames.de>)
Ответы Re: pg_upgrade 8.3 to 9.0, shutdown is to slow  (Bernhard Schrader <bernhard.schrader@innogames.de>)
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Bernhard Schrader <bernhard.schrader@innogames.de> wrote:

> what maybe is also interesting, if i start the database manually i
> have a huge waiting IO of 23% for a time of maybe 2-5 minutes, i
> think it is because of the fragmentation of the tables.
>
> is the shutdown so slow because of the waiting io? but why can i
> stop it as user root without problems...

How do you "stop it as user root", exactly?  If you kill PostgreSQL
too abruptly, the recovery could easily run for several minutes with
a lot of I/O while it recovers.

Taking pg_upgrade out of the picture for a minute -- how long do
shutdowns and startups normally take you?

-Kevin

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