Thanks for a quick reply. The server has 6 cores, 6GB ram and top gets to 2.3-2.5 load average when running the dumpall. So I assume we are nowhere near this causing performance issues for users?
Thanks
Rich



On 15/03/12 12:21, Bèrto ëd Sèra wrote:
Hi Richard,

it's no easy answer. If your server has plenty of free resources there won't be trouble, but I do have customers who cannot even imagine of launching a dump in normal traffic hours. How loaded is your box, currently?

Cheerio
Bèrto

On 15 March 2012 12:15, Richard Harley <rich...@scholarpack.com <mailto:rich...@scholarpack.com>> wrote:

    Hello all

    Very simple question -  does pg_dump/dumpall hit the server in
    terms of database performance? We currently do nightly backups and
    I want to move to hourly backups but not at the expense of hogging
    all the resources for 5 mins.

    Pg_dumpall is currently producing a 1GB file - that's the combined
    size of around 30 databases and it takes around 5 mins to run.

    Thanks
    Rich




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