Question : Server 2008 R2 Memory Leak

I have a new Dell R710 Server, dual quad-core processors with 16Gb physical RAM. It has the inbuilt Broadcom BCM5709C four-port network card running in teamed mode, an Intel dual-port MT network card for running four virtual machines through and another dual-port card connected to an iSCSI subnet to a SAN, running jumbo frames. (I mention this as I found some problems that hinted at jumbo frames but it didn't really match our configuration)

If I start the server up it is consuming 1.86Gb of physical memory with all the VMs shut down. The non-paged memory usage is about 140Mb. If I start VMs I see the expected memory consumption.

However, there is a leak somewhere. After about 24hours the server is completely out of memory and unresponsive. All I can do is reboot. If I leave the VMs off it still leaks but lasts for longer as there is more physical memory to consume. All I can find in the event logs at the time of crashing is an error saying the non-paged pool is exhausted.

If anybody could give me any help I'd really appreciate it as it's becoming a nightmare.....

Answer : Server 2008 R2 Memory Leak

Its very normal, till 10,000 count the process behavior is ok.  Most probably you are talking about Hyper V (VM),  so keep monitor the hyper V process.

Here is a mark blog on non page pool memory, just refer may this help to troubleshoot further
http://blogs.technet.com/markrussinovich/archive/2009/03/26/3211216.aspx

Make sure you patched your server and application regularly that would help to replace any flawed dll's

Please copy the event here with event id and source