Reason for these test:
I wanted to see if adding a usb device has speed differences if a usb device is connected to a vm from the host directly or from a client pc.
Drive: Nano Pro 4gb flash drive by Imation
Where to get iometer: sourceforge.net/projects/iometer/
Go to Greg Porter's site if you don’t know how to setup iometer: http://greg.porter.name/wiki/HowTo:iometer
Test 1
Test name: | Usb connected to vm via vpshere client. |
Usb location: | Usb drive on client. |
notes: | 1GB connection between client and host. |
Total I/Os sec | Seems to be under 25 slightly |
Total MBs sec | .32 |
Average io response | Just under 41ms |
Test 2
Test name: | Usb connected to vm via host. |
Usb location: | Usb drive on host. |
notes: | |
Total I/Os sec | Seems to be around 85 slightly |
Total MBs sec | 1.09 |
Average io response | Just under 12ms |
Result: USB drive connected to the host is MUCH faster
Side test: running iometer on same usb drive on my desktop
Test name: | Iometer running on client pc itself |
Usb location: | Usb drive on client. |
notes: | XP client |
Total I/Os sec | Seems to be under 146 slightly |
Total MBs sec | 1.86 |
Average io response | Just under 69ms |
Sites I looked at
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