| From: | Zlatko Calusic <zlatko(at)iskon(dot)hr> |
|---|---|
| To: | Jie Liang <jliang(at)ipinc(dot)com> |
| Cc: | Stephan Szabo <sszabo(at)megazone23(dot)bigpanda(dot)com>, pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: Optimizing huge inserts/copy's |
| Date: | 2000-08-30 22:13:18 |
| Message-ID: | 87pumqxurl.fsf@atlas.iskon.hr |
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| Lists: | pgsql-sql |
Jie Liang <jliang(at)ipinc(dot)com> writes:
> Hi, there,
>
> I tried different ways, include vaccum table , ensure index works, it
> still is as slow as ~100rows per minute.
>
PGFSYNC=no in postmaster.init?
Well, this might be Debian Linux specific, pardon me if it is. I have
just begun playing with Postgres. Still learning, myself.
IOW, disable fsync after every statement and your OS will do much
better work clustering writes. That means more inserts/sec for you.
In one of my tests I was able to insert at ~1000/sec rate. Then I made
an experiment, enabled pgfsync _and_ indexes. The inserting speed
dropped to 10/sec. Very interesting.
Regards,
--
Zlatko
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