By: Brent Ozar

Brent Ozar — Mon, 08 Feb 2010 21:52:02 +0000

Robert – that’s odd, I’m not sure what to tell you there. I’ve downloaded it dozens of times in the last couple of months and never seen an error like that. I don’t think you’re downloading the right app, maybe – try downloading it on your own local drive and see if you get that same error. Or you may be working in an environment with aggressive security settings that don’t allow you to download non-signed code, perhaps.

By: Robert Buda

Robert Buda — Mon, 08 Feb 2010 21:49:46 +0000

I tried to download the sqlio tool from various places after reading your post including from Microsoft and softpedia but I get an error about an invalid digital signature. I would like to run the tool against an EC2 machine that I am using. Any suggestions?

Thanks

By: Ben

Ben — Thu, 17 Dec 2009 08:25:42 +0000

amazon instance storage drive c:

????????????????????????????????????????????????????????????????????????????????
? ?
? SQL70IOStress Version 1.00.069 ?
? ?
????????????????????????????????????????????????????????????????????????????????
? ?
? File: c:\temp\Stress.mdf ?
? Iteration 5 of 5. Start: 15:56:05 ?
? ?
? Successful completion – Please review SQL70IOStress.Errors.txt ?
? ?
? Total Elapsed time for cycle: 5 seconds ?
? Average writes per second: 6400.000000 ?
? Average MB per second: 53.125000 ?
? ?
? ?
????????????????????????????????????????????????????????????????????????????????

C:\>
standard pc sata

????????????????????????????????????????????????????????????????????????????????
? ?
? SQL70IOStress Version 1.00.069 ?
? ?
????????????????????????????????????????????????????????????????????????????????
? ?
? File: c:\temp\Stress.mdf ?
? Iteration 5 of 5. Start: 12:47:23 ?
? ?
? Successful completion – Please review SQL70IOStress.Errors.txt ?
? ?
? Total Elapsed time for cycle: 20 seconds ?
? Average writes per second: 1600.000000 ?
? Average MB per second: 13.281250 ?
? ?
? ?
????????????????????????????????????????????????????????????????????????????????

e:\
3 Ebs drives Striped together with win os software

????????????????????????????????????????????????????????????????????????????????
? ?
? SQL70IOStress Version 1.00.069 ?
? ?
????????????????????????????????????????????????????????????????????????????????
? ?
? File: E:\temp\Stress.mdf ?
? Iteration 5 of 5. Start: 16:12:22 ?
? ?
? Successful completion – Please review SQL70IOStress.Errors.txt ?
? ?
? Total Elapsed time for cycle: 15 seconds ?
? Average writes per second: 2133.333252 ?
? Average MB per second: 17.708333 ?
? ?
? ?
????????????????????????????????????????????????????????????????????????????????

e:\
1 ebs no stripe

????????????????????????????????????????????????????????????????????????????????
? ?
? SQL70IOStress Version 1.00.069 ?
? ?
????????????????????????????????????????????????????????????????????????????????
? ?
? File: e:\temp\Stress.mdf ?
? Iteration 5 of 5. Start: 16:20:26 ?
? ?
? Successful completion – Please review SQL70IOStress.Errors.txt ?
? ?
? Total Elapsed time for cycle: 25 seconds ?
? Average writes per second: 1280.000000 ?
? Average MB per second: 10.625000 ?
? ?
? ?
????????????????????????????????????????????????????????????????????????????????

E:\>

Not looking good, for speed

Comments on: Bad storage performance on Amazon EC2 Windows servers

By: Brent Ozar

By: Robert Buda

By: Ben