VMware has pointed out that VMware Workstation prior to version 7.1.4 is known to have problem with Windows 7 Host upgraded to Service Pack 1 (SP1).
So, what about Windows 7 Guest VM equipped with SP1? I have my PC installed VMware 7.1.3 which only allows the administrator to perform any upgrade on it. Thanks to the company policy.
After the upgrade of Guest VM to SP1, Guest VM nearly caused the system to hang for minutes to do simple tasks and a high CPU usage at all time. People blamed on VMware's memory optimization feature which is enabled by default to optimize Guest VM memory consumption.
Temporary solution would be adding the following line into config.ini file located at C:\ProgramData\VMware\VMware Workstation:
vmmon.disableHostParameters = TRUE
This turns off VM memory optimization feature and some other possible host configurable features.
After saving the change onto config.ini file, a clean reboot on hosting system is recommended.
Now, your favourite Win7 SP1 Guest VM should be back on track with presumably high performance.
Reference:
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1036185
Someone may find it unable to change config.ini due to your user permission, it is recommended people try booting their system with Linux USB Pen Drive or any other bootable Linux Live CD/DVD and then changing the file content after Windows 7 NTFS partition is mounted successfully.
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