Hi,
I'm trying to setup a server for performance analysis of a product.
As a first step, I wanted to get repeatable results on a performance test so that I can use it as baseline performance data.
When I run the test multiple times, I see that 2 out of 10 runs take more time for I/O than the others. I have ensured that there are no unnecessary processes running on the system.
Finally I captured etl traces using WPR's DiskIO profile and compared the bad run with good run using Comparitive Analysis. There was an 'Unknown' process which was consuming more Disk Service time than good run.
My question is how do I know what is that intermittent 'unknown' process which is affecting the repeatability of my tests?