Re: WAL Archiving frequency

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От Brendan Duddridge
Тема Re: WAL Archiving frequency
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Msg-id FC1BE4DC-809A-40C6-A537-872DD3B8F0DA@clickspace.com
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Ответ на Re: WAL Archiving frequency  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: WAL Archiving frequency  (Alan Hodgson <ahodgson@simkin.ca>)
Список pgsql-general
Thanks Tom,

I just didn't know if that was normal or not. I actually saw 4 WAL
files / minute today. I set checkpoint_segments = 128, so maybe that
will help.

Thanks,

____________________________________________________________________
Brendan Duddridge | CTO | 403-277-5591 x24 |  brendan@clickspace.com

ClickSpace Interactive Inc.
Suite L100, 239 - 10th Ave. SE
Calgary, AB  T2G 0V9

http://www.clickspace.com

On Mar 31, 2006, at 8:47 PM, Tom Lane wrote:

> Brendan Duddridge <brendan@clickspace.com> writes:
>> I've noticed that it's archiving the 16 MB wal files about once every
>> minute. Is this normal? There's a huge number of files in my
>> wal_archives directory now.
>> Is there a parameter to tell it not to archive so frequently? Or is
>> this nothing to be too concerned about?
>
> If you've got a reasonably active database, 16MB/minute is not an
> unlikely rate of WAL generation.  You can probably slow it down a
> bit by
> increasing the checkpoint-spacing parameters, but you can't just say
> "don't generate so much WAL please".  Either you want a log or you
> don't.
>
> Basically, you have to take base backups often enough that the total
> number of WAL archive files needed stays under your threshold of
> pain...
>
>             regards, tom lane
>
> ---------------------------(end of
> broadcast)---------------------------
> TIP 2: Don't 'kill -9' the postmaster
>


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