Search Postgresql Archives

Re: simple update queries take a long time - postgres 8.3.1

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 2008-04-02 09:30, mark wrote:

> Based on what Tomasz suggested a day ago, I had changed settings to
>        checkpoint_segments = 16
>        checkpoint_timeout = 20min
>        checkpoint_completion_target = 0.8
> but i still do get statements that take over 2 or 3 seconds to execute
> sometimes... should I increase checkpoint_segments to 30 now?

Go for it. Even 64 (I like round numbers) would not be too much. This
would make 1GB of data in WALs.

> Should I change checkpoint_timeout & checkpoint_completion_target too??

I'd recommend not. Too much and your recovery time would be in hours.
And too big checkpoint_completion_target could make your original
problem even worse.

Regards
Tometzky
-- 
...although Eating Honey was a very good thing to do, there was a
moment just before you began to eat it which was better than when you
were...
                                                      Winnie the Pooh


-- 
Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux