[irq]: techie interrupted05/10/2012
“ Also, we ran an experiment on an m1.small instance where we took over its CPU usage with a math calculation. Running top showed that 98% of this was used for the math, and 2% was stolen. However, on Cloudwatch, Amazon’s monitoring service, the instance appeared to be running at 98% CPU utilization, rather than the full 100%. This can cause some problems with larger steal cycles, because it would be impossible to determine if an instance is maxed out due to steal cycles, or if it is “underutilized”. In general, we would’ve liked to see more guarantees on CPU performance. „
Quote posted at 12:16 Comments
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