On 7/25/13 6:02 PM, didier wrote:
It was surely already discussed but why isn't postresql writing sequentially its cache in a temporary file?
If you do that, reads of the data will have to traverse that temporary file to assemble their data. You'll make every later reader pay the random I/O penalty that's being avoided right now. Checkpoints are already postponing these random writes as long as possible. You have to take care of them eventually though.
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