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January 27, 2005
VM test with IO Meter
A few days ago I was talking to Devlin and he asked why we don't just run benchmarks on the VMs to see what performance they get. After thinking about that I decided it was a good idea. So today I setup and ran some initial tests.
The test was fairly simple and is outlined below:
- IO Meter Dynamo on each virtual machine
- IO Meter GUI running on Tibblefork acting as the manager
- Ran the default IO Meter Disk IO test
- Ran 6 tests each with 1 more virtual machine
The graphs below are the results of the tests. You will notice that with only one VM running it has very good performance then drops in half almost with 2 and then just a steady decline.
(The pictures seem to be too wide for the page so you may want to right-click on them and select view image.)
The default Acess Specification for IO Meter is:
- Transfer Request Size: 2 KB
- Writes 33% of the time and does reads the other 67%
- 100% random distribution of calls instead of sequential
Here is a link to the Excel spreadsheet of the results that were used to generate the graphs.
Posted by nekstrom at January 27, 2005 02:06 PM
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Posted by: Phil at January 31, 2005 11:00 AM