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ESXi slow VM

post #1 of 14
Thread Starter 
Currently with my ESXi system, having more than one VM running will cause everything to start lagging.
Specs: Intel G620, 8GB RAM. The VM's are installed onto a seagate 2.5" (can't remember model off the top of my head) and ESXi is installed onto a usb flash drive.

Running Windows Home Server 2011 and Windows 7.

Looking at the task manager, "system idle process" takes up 99% cpu usage which causes consistent spikes on the usage history.

How could I get rid of this lag? CPU & Ram should be able to handle both whs2011 and win7 when both are idling.

Thanks
post #2 of 14
putting the VMs on an SSD will help heaps..
IMO i would look at atleast 4 physical cores in the CPU and 8GB RAM is pusing it.. i like at least 16GB on my EXSi server.. thats just me..
an SSD tho will help heaps smile.gif
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post #3 of 14
The drive is probably 5.4k rpms so that also could be an issue related to speed.
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post #4 of 14
The most taxing thing on a VM host is the disk IO. You shouldn't be getting too terrible performance with only 2 vm's; but can you try separating the guest vm's to two different hard disks?
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post #5 of 14
Thread Starter 
Could it be due to running ESXi on a usb flash drive?
post #6 of 14
Quote:
Originally Posted by Syjeklye View Post

The most taxing thing on a VM host is the disk IO. You shouldn't be getting too terrible performance with only 2 vm's; but can you try separating the guest vm's to two different hard disks?

Disk I/O is always bad, and you chose a slow disk to try and run 2 vm's, naughty naughty....
Quote:
Originally Posted by adamx View Post

Could it be due to running ESXi on a usb flash drive?

No. We run our production VMware off of SD cards embedded in the chassis of the hosts. Takes a lot longer to start up, but like most operating systems, the system required data is in ram once running
post #7 of 14
did you only give each VM one core? Give them each both cores and one VM will use as much as it can when the other VM is not doing anything. I run 4 VMs off of a single 250GB platter drive and I have no stutter issues at all. Granted I am using a X5675 6 core with HT xeon @ 4.2...
Edited by Deeeebs - 3/23/12 at 6:58am
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post #8 of 14
Did you remember to install VMware tools on all your VM's?

Most likely the "lag" you think you are seeing isn't really lag, you just need to enable acceleration. It varies by OS, but for Windows 7 right click on your desktop, go to "Screen resolution" then "advanced settings", select the "troubleshooting" tab, click the "change settings' and set the "Hardware Acceleration" to "full" and hit OK. This might do the trick, also you should RDP to the VM's, and avoid using the console for best performance.
    
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post #9 of 14
Actually the USB flash drive could be the problem if the VMs are also hosted on the flash drive. Class 2 or 3 flash drives would have a horrible I/O.
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post #10 of 14
Quote:
Originally Posted by Sarec View Post

Actually the USB flash drive could be the problem if the VMs are also hosted on the flash drive. Class 2 or 3 flash drives would have a horrible I/O.

He said in the OP that the VM's are in a 2.5" drive...
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