SharePoint’s Sasquatch Memory Leak

Background

I have been working with SharePoint for a few years now and have run into many nasty high memory or Out of Memory (OOM) issues. To date many of SharePoint’s memory problems have been discussed as problems with developers not using the Dispose pattern properly when using the SharePoint OM. And while I have found this to be the case I always had a feeling that there was something more, another larger leak which could not be explained simply by not calling Dispose. Sure not calling dispose will keep the SPRequest COM object (which is fairly large) around longer than necessary however ref-counting will clean these up eventually but even with using the correct coding patterns and practices the w3wp processes still seem larger than necessary; even on my development machine when I run stress against an out of the box installation. So there must be something else going on here; and so started my search for Big Foot.

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