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Running IIS 6 on Windows 2003 server (with a web service app). I suspect the machine is network I/O bound.

I'm hearing reports of errors - but not seeing those errors in the IIS logs.

What is the standard way of verifying this? Is there a counter in perfmon?

Thanks for the help.

[Edit: modified to clarify I/O type - network]

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Which type of I/O? Disk? Network? –  Massimo May 17 '10 at 7:27

1 Answer 1

up vote 2 down vote accepted

For disk IO: Disk Queue Length being consistently high, while CPU and Memory are not saturated would be a very strong indicator.

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Thanks. Is there something similar for network I/O too? –  christopherstott May 17 '10 at 15:55
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@christopherstott: The networking tab of task manager is good for a quick look to see if your NICs are max'ed out. There are plenty of counters to get into the details of networking. –  Richard May 19 '10 at 8:33

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