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Re: CPU bound

From: James Cloos <cloos(at)jhcloos(dot)com>
To: Royce Ausburn <royce(at)inomial(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: CPU bound
Date: 2010-12-20 00:57:48
Message-ID: m38vzl6z17.fsf@jhcloos.com (view raw or flat)
Thread:
Lists: pgsql-performance
>>>>> "RA" == Royce Ausburn <royce(at)inomial(dot)com> writes:

RA> I notice that when restoring a DB on a laptop with an SDD,
RA> typically postgres is maxing out a CPU - even during a COPY.

The time the CPUs spend waiting on system RAM shows up as CPU
time, not as Wait time.  It could be just that the SSD is fast
enough that the RAM is now the bottleneck, although parsing
and text<=>binary conversions (especially for integers, reals
and anything stored as an integer) also can be CPU-intensive.

-JimC
-- 
James Cloos <cloos(at)jhcloos(dot)com>         OpenPGP: 1024D/ED7DAEA6

In response to

  • CPU bound at 2010-12-13 02:43:10 from Royce Ausburn

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Subject: Re: CPU bound
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Subject: Re: Strange optimization - xmin,xmax compression :)

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