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Jona
Asked: 2011-09-15 04:35:08 +0800 CST

Memory bloat / leak in 3rd party IIS script

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We have a 3rd party application that runs on an IIS web server, during the day as people use it, it seems to take up more and more memory until the server is very close to the memory limit and we get nagios alerts. Here is a graph of a few hours this morning, IIS was restarted at 11:40, some of this ramp up will be due to people starting work but I suspect not all of it, the spike at 11:20 is of perticular concern.

Graph of issue

I need help tracking down what module or script in this application might be leaking memory, any ideas or suggestions on tools to extract this data?

Thanks Jona

windows-server-2008 memory iis performance-monitoring memory-leak

1 Answers

  1. Tried DebugDiag 1.2 (aka the Debug Diagnostic Toolkit)?

    While working it out, you might want to implement memory-based recycling triggers for the application. If you meant "restart IIS" when you said "restart IIS", and not just "recycle the application pool", you don't need to go to that length, and recycling results in less (i.e. near-zero or zero, depending on the app) downtime.

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