Memory counters

[CJaM]

Hi,
I'm trying to learn about performance counters and use one at the same
time.
I want to see if a particular user needs additional RAM as he states
he does.
MS has so many different counters its hard to tell what to use (and
compare it to)
for such a simple task.
But according to KB 146005, MS states to log these two counters for
suspected memory bottlenecks.

Logical diskTotal/Total)\Avg. Disk Bytes/Transfer
Memory: Pages/sec

Then it says "If the product of these two counters (equals percentage
of the disk access time used by paging) > 10%
on a sustained basis, the system needs more memory.

Easy enough, you'd think.
According to that, yu run a log of those 2 objects for a time, then
multiply the two together and take an average.

I did this and came up with this number: 63756.72233322 A bit more
than 10%..

Then i just happened to read somewhere with nothing to do with MS, and
they suggested comparing those same counters, but
they also said (re: logical disk counter) "Don't forget to convert
bytes to pages by dividing by 4096"
MS says nothing about this, but I then divided my logical disk counter
by 4096, and then took an average and lo and behold I got a 15.5733443
A bit more like it, you can actually read that as 15 or 16%....

I just want to know if the above bit is right or the previous MS way?
Is there a decent (reliable) website that not only tells you what the
counters do, but gives real world examples of how to actually use
them??

TIA
cj

 

[Gerry Voras]

The ones I look at include page swaps to/from swap file(>2/sec) and
percentage utilization of physical memory (>50%).

Or, according to the KB method you used below, >10% might mean you should
consider an upgrade. They do often forget to tell you about the conversion,
so you did the correct thing.

 

[CJaM]

OK, thanks....

The ones I look at include page swaps to/from swap file(>2/sec) and
percentage utilization of physical memory (>50%).

Or, according to the KB method you used below, >10% might mean you should
consider an upgrade. They do often forget to tell you about the conversion,
so you did the correct thing.