page faults

[Tokatrash]

Hi All,

One of our servers has begun running slower the last three months.

I've startet an performance monitoring to figure out what the problem
is.

The counters is usually at these values:
Memory
Available MBytes = 282
Page Faults/sec = 184,724
Page Reads/sec = 0,100
Page Input/sec = 0,125
Pages/sec = 0,125

Network
Bytes Total/sec = 2177,274
Output Queue Length = 0

PhysicalDisk
Avg. Disk Queue Length = 0,063
Avg. Disk sec/Transfer = 0,008

Processor
% Processor Time = 1,812

But sometimes it boosts to:
Memory
Available MBytes = 280
Page Faults/sec = 442,447
Page Reads/sec = 1,283
Page Input/sec = 9,851
Pages/sec = 9,851

Network
Bytes Total/sec = 20424,392
Output Queue Length = 0

PhysicalDisk
Avg. Disk Queue Length = 0,819
Avg. Disk sec/Transfer = 0,023

Processor
% Processor Time = 27,598

After what i can read... i might need an additional RAM module? Is
that correct?

Thanks for youre help!

[Brian Cryer]

"Tokatrash" <mar...@deamon.dk> wrote in message
news:1183021189.5...@q69g2000hsb.googlegroups.com...

> Hi All,
>
> One of our servers has begun running slower the last three months.
>
> I've startet an performance monitoring to figure out what the problem
> is.

<snip>

> After what i can read... i might need an additional RAM module? Is
> that correct?
>
> Thanks for youre help!

The system pages when it needs a page of memory which isn't loaded. So, yes,
adding more RAM will always help. If you are paging a lot then extra RAM
should make a big difference - provided you add sufficient. I don't know
anything about your server but I suggest adding as much RAM as it will take.

Whilst its unlikely to yield much in the way of benefit its probably worth
spending a bit of time seeing if you can work out why its paging, what is it
that has changed which means its paging more now than before. New
application, larger database, misbehaving application etc.
--
Brian Cryer
www.cryer.co.uk/brian