Btw, what is page replacement algorithm that used by FreeBSD...sorry I'm
newbie..LRU or another algorithm?


> Running out of memory and having to continually swap things in and out
> of ram degrades performance, yes. Page faults are simply how the
> virtual memory subsystem gets things done, like pulling things out of
> swap.
>
> --Doug
>
> On Nov 7, 2007 7:48 PM, binto wrote:
>> Btw
>>
>> Even page fault isn't a terrible thing, but she could make
>> trashing condition..that can degrade CPU utilization, am i correct?
>>
>>
>>
>>
>>
>>
>> > On 11/6/07, binto wrote:
>> >>
>> >> I just wanna know,
>> >> how to reduce the number of page faults to upgrade program or OS
>> >> performance?
>> >> is there any parameters that i must set if i reduce the number of

>> page
>> >> fault?
>> >
>> >
>> > Don't forget that some amount of page faults are normal consequences

>> of
>> > using a machine with virtual memory. Page faults alone are not an
>> > indicator
>> > that you're out of memory or suffering in any way, they just mean that
>> > something was requested in vm that wasn't actually in ram, and needed

>> to
>> > be
>> > loaded. Ask 'swapinfo' or 'top' to see if you might possibly benefit

>> from
>> > more ram by reducing paging.
>> >
>> > --Doug

>>
>> > _______________________________________________
>> > freebsd-hackers@freebsd.org mailing list
>> > http://lists.freebsd.org/mailman/lis...reebsd-hackers
>> > To unsubscribe, send any mail to

>> "freebsd-hackers-unsubscribe@freebsd.org"
>> >

>>
>>
>>

>



_______________________________________________
freebsd-hackers@freebsd.org mailing list
http://lists.freebsd.org/mailman/lis...reebsd-hackers
To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"