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Re: very high CPU usage in "top", but not in "mpstat" - Mailing list pgsql-performance

From Tom Lane
Subject Re: very high CPU usage in "top", but not in "mpstat"
Date
Msg-id 24916.1083762195@sss.pgh.pa.us
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In response to very high CPU usage in "top", but not in "mpstat"  ("Cyrille Bonnet" <cyrille@3months.com>)
Responses Re: very high CPU usage in "top", but not in "mpstat"
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"Cyrille Bonnet" <cyrille@3months.com> writes:
> Should I be worried that Postgres is eating up 99% of my CPU??? Or is this
> *expected* behaviour?

It's not expected, unless you are running some very long-running query.

The conflict between what top says and what mpstat says is strange; I
wonder if you might have a buggy version of one of them?  You should
probably check some other tools (try "vmstat 1" for instance) to see if
you can get a consensus on whether the CPU is maxed out or not ...

            regards, tom lane

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