Re: [OpenSTA-users] using NT collectors

[Simeon P. <st...@ya...>]

HA,
I have been using NT collectors to monitor %CPU usage and %committed bytes used on both Windows 2003 and Windows 2008 servers with OpenSTA for a few months now.  Special permission is required; your (domain) user who is running openSTA must belong to the performance monitoring group on the target machine (or you can create a non-domain user on both machines with the same user name and password, and grant the permission to them).
As for the accuracy of the values, I find that, for CPU usage anyway, they match closely to the ones in Task Manager, but do not include CPU usage by the system process (about 15% overhead).  It might be worthwhile to graph the result in OpenSTA and by some other tool at the same time to determine if the results are consistent or not.
I have also run into certain machines where a dual-core CPU would report CPU usage out of 200% instead of out of 100%.
-Simeon Potts

----- Original Message ----
From: "HIWOT, Amare" <ama...@ca...>
To: OpenSTA users discussion and support <ope...@li...>
Sent: Monday, July 21, 2008 10:26:29 AM
Subject: [OpenSTA-users] using NT collectors



Hi all,

I have a doubt about the possibility of using NT collectors to monitor
the performance of the machine hosting the application server I'm
testing.

The application server runs on Windows Server 2008.

Do you know if NT collectors work properly on systems that are not
Windows NT systems.
My doubt comes from the help section of OpenSTA that says that NT
collectors are made to monitor windows NT and Windows 2000.
But in the FAQ section i also found that it works for XP. But they don't
mention anything about Windows Server 2003 or any other server OS.

Do you know if NT collectors can give realiable information if we use it
on Windows server 2003 or windows server 2008?

Thank you very much for your help.

Regards, HA.



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