Re: Disk latency goes up during certaing pediods

To all whom might be interested, I have an update on this.

I run some tests on the old production DB which was Posgres 8.3 (and only one disk for everything), using pgreplay, running the same queries as the 9.1 server.

Here is the output of iostat for the 8.3 server:

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Here is the output for 9.1:

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