"fka...@googlemail.com" <fka...@googlemail.com> wrote: > Scott Carey: > >> You are CPU bound. >> >> 30% of 4 cores is greater than 25%. 25% is one core fully >> used. > > I have measured the cores separately. Some of them reached > 30%. I am not CPU bound here. If you have numbers like that when running one big query, or a stream of queries one-at-a-time, you are CPU bound. A single request only uses one CPU at a time although it could switch among a number of them, if the OS doesn't make an effort to keep each process with the same CPU. -Kevin
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