Re: Excessive Paging


Thanks Earl, I understand that. Are you saying that 30-50 pages/sec
is normal with 392M memory, 160M of available memory and a max
commit charge of 170M? Perhaps I'm I'm not taking into consideration
the cache/available memory relationship and expecting too much from
memory utilization and this is just normal? Perhaps I've just crossed
over the commit level far enough to start thrashing and a memory
upgrade would be in order?

I've been through HiJackThis and SpyBot which didn't turn up
turning up anything interesting and am running AdAware at
the moment (and for many moments to come ;-p Boot times on
this machine have gone from an (albeit slow) couple of minutes
(from power on, through logon to the desktop) to about 10 minutes.
So, either something new is running on this system or something
is failing.

If there is a problem with what is running, it must be loading
at boot time. I've been trying to go through the running process
list to determine if there is something there that isn't right but
it takes time to track each process down.

I've also been through the services list and haven't found anything
out of the ordinary there either although I haven't checked each
one individually yet (hijack this should have caught anything
interesting here).

One other thing that I've noticed that I can't seem to reconcile
is why some system devices, in particular, SystemDevices->
DirectMemoryAccessController are indicating that there is no
device driver installed, the device enabled and yet the driver
tab shows a driver driver info. I ran sfc against the system but
that just quietly exited when done - does it show something
if it made changes?

Thanks,
Ray


Earl Grey wrote:
Hi Ray:

Without knowing what's running on the machine, all those statistics are
just so many numbers.

Here's what matters: What applications are running and how much
resources are they using?

There's no mystery behind slow performance on a machine without hardware
problems. It's simply an imbalance of running applications vs. resources
available to run them (principally memory). The solution is equally
simple: Add resources or remove applications that use too much of them.

Earl Grey

Ray Manning wrote:
I'm running an XP SP2 machine that has experienced an incredible
decrease in performance over the past couple months and I'm trying to
determine why. At first I thought the hard drive might be at fault
since I was seening It would appear to me that the machine is
needlessly paging based on the PerfMon.exe Pages/sec counter and the
taskman performance numbers. Can someone verify I'm on the right track
and possibly offer solutions?

Here's what I'm seeing:

Perfmon.exe (Pages/Sec) averages of 30-60 with a scale of 1

TaskMan: Performance

Physical Memory (K)

Total : 392,496
Available: 170,000
System Cache 240,000


Commit Charge(K)

Total 158,568
Limit 550,000
Peak 170,000

CPU usage averages about 5-20% but of course spikes at times.


What I don't understand, and perhaps it's my interpretation of the
perfmon counter, is why I have such a high page/sec rate when my peak
commit charge isn't even half of the physical memory. Shouldn't my
commit charge be much higher before paging starts hitting 40+
pages/sec? Is page size 4k? 160k/second when I have a couple hundred
megs of physical memory available?

I did not look at these numbers before I started having performance
problems (long boot times, 5 minutes to log on, etc) so perhaps these
are not out of line, but if not, can someone explain to me what I'm
missing in my interpretation?

Thanks,
Ray


.

Relevant Pages

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