Re: 7.3.3 NT 4.0 Page faults = bad??

Silent Bob wrote in message <36cd61b9.70451814_at_news.dial.pipex.com>...
>On one of our servers oracle73.exe is generating about 900,000 page
>faults a day. It uses not more than about 60 meg of the 256 meg page
>file (and 128 mg ram)
>Does anyone know what might be causeing these page faults (or even
>what the page faults reading in NT task manager./processes really
>means) And if this is bad or not...
>There appears to be no performance problem.. but generating that many
>page faults a day (something that I just noticed yesterday (oops) ) is
>a little worrying. :-)

AFAIK NT, instead of LRU, uses FIFO algorithm to manage pages in phisical memory. So you may see so large number of page faults. But in most cases, these are "soft" page faults and faulting page is found in the file cache.
If you're worry about paging activity you should see page inputs / outs statistics. It reflects disk activity. In general, you should avoid more than 5-10 "hard" page swaps per second in whole system.

--
Piotr Kolodziej pkol_at_otago.gda.pl
Just my private opinion. Received on Fri Feb 19 1999 - 07:59:14 CST