From How to improve disk I/O performances with VMware Workstation 5:
Workstation checks which part of the guest OS virtual memory is not used and allocates it back to the host OS. This permits to have more concurrent virtual machines running but everytime the guest OS asks back for its memory it suffers a performance degradation.
So, if you have enough free RAM for all planned concurrent VMs, be sure to disable memory trimming for guest OSes adding the following line to the virtual machine configuration (.vmx) file:MemTrimRate=0
VMware uses a page sharing technique to allow guest memory pages with identical contents to be stored as a single copy-on-write page. Page sharing decreases host memory usage, but consumes system resources, potentially including I/O bandwidth.
You may want to avoid this overhead for guests for which host memory is plentiful and I/O latency is important. To disable page sharing, add the following line to the virtual machine configuration (.vmx) file:sched.mem.pshare.enable=FALSE option
6 thoughts on “VMWare performance tricks”
i believe there should not be this “option” word at the end.
one more trick is about disabling logging :
logging = “FALSE”
4tGood idea.5w I compleatly agree with last post. jsz
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