On Mon, Oct 8, 2012 at 7:48 PM, Craig James <cjames@xxxxxxxxxxxxxx> wrote: >> > # blockdev --getra /dev/sdb1 >> > 256 >> >> >> It's probably this. 256 is way too low to saturate your I/O system. >> Pump it up. I've found 8192 works nice for a system I have, 32000 I >> guess could work too. > > > But again ... the two systems are identical. This can't explain it. Is the read-ahead the same in both systems? -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
