[irq]: techie interrupted05/10/2012
“ Unequal instances - At one point, we tried to benchmark the CPU performance of our front and back end servers, all of which were m2.xlarge size. We timed a simple math operation, 2^2^20, using the command bc and found that the times fell into two different groups, with statistical significance. We ran cpuid on the tested instances, and faster group was running on dual 2.40 GHz processors, while the slower group was running on dual 2.66 GHz processors. While this was not a major problem in our site’s functionality, it made it harder to determine what computing power was at our disposal. „
Quote posted at 12:11 Comments
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