James Dey wrote:
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Hi Guys,
We have been running our systems on high end Redhat ES 32 Bit servers
without any sort of glitch. We have now set up a 64 bit Athlon server
running Redhat ES, installed the Redhat PgSQL as well as the PHP5 RPM.
Do the machines have a different amount of RAM? There is no reason that
a 32 bit machine versus a 64bit machines should swap noticeably more
unless something has changed.
/“Secondly "sar" is showing that you are dipping quite a bit into your
swap space. When dealing with a database server, any time that you
move from RAM to swap you will see a massive performance drop,
especially when dealing with as much swap as this machine has. At its
peak you were hitting 70%(700M) of swap. Since PostgreSQL is
unsupported I don't have any suggestions on query optimizations.
However, at this point upgrading your available RAM would be one of my
best suggestions.”/
Well there response is correct but the question is why are you hitting
swap. Please see my quseton above.
Does anyone have any experience on this? Most of the things I have
read suggest that I move back to 32 bit but I do think it’s a step
backward – that’s if this can be supported.
There is no reason for you to move back to 32bit.
Joshua D. Drake
