Re: Running update in chunks?

From: patrick keshishian <pkeshish(at)gmail(dot)com>
To: Tim Uckun <timuckun(at)gmail(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Running update in chunks?
Date: 2013-01-21 22:07:53
Message-ID: CAN0yQBruwRuETXecK3JZRewXjyWNWr-r+KDD3F0aBK4xw40eVQ@mail.gmail.com
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On Mon, Jan 21, 2013 at 1:48 PM, Tim Uckun <timuckun(at)gmail(dot)com> wrote:
>> I'd be curious to see results of the same "update" on a standard HDD
>> vs the SSD, and maybe on a more typical database deployment hardware
>> vs a macbook air.
>>
>
>
> I haven't tried it on any other machine yet. CREATE TEMP TABLE tt as
> SELECT ... takes eight seconds so presumably the disk is not the
> choke point.

you are making an assumption that a fresh write is the same as a
re-write. try the test.

--patrick

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