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Does anyone else experience poor disk IO performance on AWS? I ran 'dd if=/dev/zero of=/tmp/file' and the speed is between 1-10 MB/s. I would expect hundreds of
by qwerta 12y ago
Does anyone else experience poor disk IO performance on AWS? I ran 'dd if=/dev/zero of=/tmp/file' and the speed is between 1-10 MB/s. I would expect hundreds of MB/s if they advertise SSD.
- lnanek2 12y agoIsn't your server just virtual? Your instance could be running on a physical host running a hundred others, all accessing disk at the same time. A lot of times these cloud providers don't really target super fast individual responses anyway, just decent responses across millions of requests.
- mjb 12y agoThere is a first-touch penalty with EBS volumes. Follow the pre-warming guide and then try your benchmark again: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-prewarm.html http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-prewa...