Michal Taborsky <[EMAIL PROTECTED]> writes:
> I've read the discussion in "Trying to minimize the impact of 
> checkpoints" thread and I get it, that there is nothing I can do about 
> it. Well, we'll have to live with that, at least until 7.5.

You could experiment with the checkpoint interval (checkpoint_timeout).
A shorter interval will mean more total I/O (the same page will get
written out more often) but it should reduce the amount of I/O done by
any one checkpoint.  You might find that the extra overhead is worth it
to reduce the spikes.

But 7.5 should provide a much better answer, yes.

                        regards, tom lane

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