"fkater@googlemail.com" <fkater@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