Comments on: Bad storage performance on Amazon EC2 Windows servers http://www.brentozar.com/archive/2008/11/bad-storage-performance-on-amazon-ec2-windows-servers/ Your technology pain-relief experts. Wed, 08 Feb 2012 16:37:59 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: How can I speed up SQL Server queries on Amazon EC2? - Admins Goodies http://www.brentozar.com/archive/2008/11/bad-storage-performance-on-amazon-ec2-windows-servers/comment-page-1/#comment-32651 How can I speed up SQL Server queries on Amazon EC2? - Admins Goodies Tue, 09 Aug 2011 21:40:59 +0000 http://www.brentozar.com/?p=1605#comment-32651 [...] you don’t get much more of a SQL server expert than Brent Ozar, so read and understand his post on the topic. It led to a conversation on the AWS forum which talks about the relative performance metrics you [...] [...] you don’t get much more of a SQL server expert than Brent Ozar, so read and understand his post on the topic. It led to a conversation on the AWS forum which talks about the relative performance metrics you [...]

]]> By: Brent Ozar http://www.brentozar.com/archive/2008/11/bad-storage-performance-on-amazon-ec2-windows-servers/comment-page-1/#comment-17443 Brent Ozar Mon, 08 Feb 2010 21:52:02 +0000 http://www.brentozar.com/?p=1605#comment-17443 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. 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 http://www.brentozar.com/archive/2008/11/bad-storage-performance-on-amazon-ec2-windows-servers/comment-page-1/#comment-17442 Robert Buda Mon, 08 Feb 2010 21:49:46 +0000 http://www.brentozar.com/?p=1605#comment-17442 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 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 http://www.brentozar.com/archive/2008/11/bad-storage-performance-on-amazon-ec2-windows-servers/comment-page-1/#comment-15634 Ben Thu, 17 Dec 2009 08:25:42 +0000 http://www.brentozar.com/?p=1605#comment-15634 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 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

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