Re: Solaris Priority Paging and Database products.
Date: 1999/09/10
Message-ID: <37D8F94A.8E58783A_at_home.com>#1/1
I have implemented it for a large customer running SAP/Oracle on a
large E10K domain. I don't think it directly contributed to a
performance
increase. The trick today is not to be memory starved. This domain
had 20GB of memory. That meant that fsflush was running like crazy
but not that we were doing real paging. We tuned the entire memory
system including priority paging and fsflush parameters like slowscan
and handspreadpages and saw some improvement. Further investigation
revealed some horrific joins in the custom stuff added to SAP and
once those were tuned performance really settled down.
Paul Rogers
Sun Professional Services
Richard Yates wrote:
> A quick question - has anyone implemented priority paging on Solaris
> and noticed a performance change with their database product? If so,
> I shall be very interested to hear any conclusions reached! I have
> done some testing, but due to certain factors formed no firm ideas,
> other than "it *should* be a good thing".
>
> Richard Yates.
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Received on Fri Sep 10 1999 - 00:00:00 CEST