| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | "Sakari A(dot) Maaranen" <sam(at)iki(dot)fi> |
| Cc: | Greg Stark <gsstark(at)mit(dot)edu>, pgsql-bugs(at)postgresql(dot)org |
| Subject: | Re: Re: BUG #5480: Autovacuum interferes with operations (e.g. truncate) on very large databases |
| Date: | 2010-05-30 03:50:23 |
| Message-ID: | AANLkTimF3OBQPjkRqfAW095agLUJ0-p2rTQlf7yaUX6i@mail.gmail.com |
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| Lists: | pgsql-bugs |
On Sat, May 29, 2010 at 5:44 PM, Sakari A. Maaranen <sam(at)iki(dot)fi> wrote:
> For now, I can work around this on the client side by splitting the
> updates into a million separate transactions instead of a single big
> one. Will be slow, but it should work.
In general, it's better to group things into larger transactions - the
case where the pending trigger queue exhausts system memory is an
unfortunate exception. You might want to think about, say, a thousand
transactions of a thousand records, instead of a million transactions
with one record each.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise Postgres Company
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