Windows services use more memory after vmotion.

[Sreejesh_D]

a strange behavior observed with respect to memory usage of windows processes in our environment.

Memory usage of windows processes increase drastically on the VMs which are migrated (vmotion).

Before migration:

After migration:

- both hosts are running with ESXi 4.1.

- VMware tool is installed and running on VM.

- no ballooning happening.

[rickardnobel]

Very strange behavior. Do you see this on all Windows guests at every vMotion? Is there some difference between Windows versions? From the Taskmanager it looks like Windows 2003 above.

Are the host hardware identical?

[Sreejesh_D]

Thanks rickard for replying on this.

it looks like the issue is with vShield endpoint driver. we have followed the below KB, however in our environment 0 was the value DWORD had when the performance was poor. we have better performance after setting it to 3.

http://kb.vmware.com/kb/2008919

[rickardnobel]

Sreejesh wrote:

it looks like the issue is with vShield endpoint driver.

Interesting. It is of course a bit odd why it would inflate ordinary Windows processes, but they might all share some low level driver used by vShield? Nice that the issue seems to be resolved then.