From: David Rees <drees76@gmail.com>
To: Stefano Nichele <stefano.nichele@gmail.com>
Cc: Merlin Moncure <mmoncure@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: understanding postgres issues/bottlenecks
Date: Tue, 6 Jan 2009 15:33:09 -0800
Message-ID: <72dbd3150901061533o5f8601cau389ceaf0ad6840cd@mail.gmail.com> (raw)
In-Reply-To: <4963AACF.2070201@gmail.com>
References: <49638BE9.2030701@gmail.com>
<b42b73150901060916w11982ba3pb10ccd7de30178ad@mail.gmail.com>
<4963AACF.2070201@gmail.com>
On Tue, Jan 6, 2009 at 11:02 AM, Stefano Nichele
<stefano.nichele@gmail.com> wrote:
> BTW, why did you said I/O bound ? Which are the parameters that highlight
> that ? Sorry for my ignorance....
In addition to the percentage of time spent in wait as Scott said, you
can also see the number of processes which are blocked (b column on
the left). Those are the processes which would like to run but are
waiting for IO to complete.
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To: pgsql-performance@postgresql.org
Cc: drees76@gmail.com, stefano.nichele@gmail.com, mmoncure@gmail.com
Subject: Re: understanding postgres issues/bottlenecks
In-Reply-To: <72dbd3150901061533o5f8601cau389ceaf0ad6840cd@mail.gmail.com>
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