From: | Jan Wieck <JanWieck(at)Yahoo(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | "Marc G(dot) Fournier" <scrappy(at)postgresql(dot)org>, pgsql-committers(at)postgresql(dot)org |
Subject: | Re: pgsql-server: Vacuum delay activated by default. |
Date: | 2004-08-08 00:19:24 |
Message-ID: | 4115718C.5010009@Yahoo.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-committers |
On 8/7/2004 2:06 PM, Tom Lane wrote:
> "Marc G. Fournier" <scrappy(at)postgresql(dot)org> writes:
>> Just curious, but isn't this one of the key points about pg_autovacuum in
>> the first place? So that you vacuum what needs to be vacuum'd, and not
>> *everything* ... ? Shouldn't the answer to the 'bandwidth issue' change
>> to 'you should install/use pg_autovacuum'?
>
> No, not really, but I think it's much more likely that you'd want to
> enable vacuum delay for autovacuum-commanded vacuums than vacuums
> commanded interactively. Or, if you still prefer the old-tech way of
> performing routine vacuums from a cron script, you'd probably turn on
> vacuum delay in that cron script.
>
> I think we *should* add to autovacuum a parameter to let it set
> vacuum_delay for its vacuums, and maybe even default to having it on.
> But I'm unconvinced we want any delay as the global default.
That sounds like a good idea.
But then again, based on this entire discussion and the fact that
unvoluntary vacuum runs during a production servers peak time are the
worst thing that can happen, I take it that it was never intended to
enable pg_autovacuum by default either and that one has to enable it
explicitly in the configuration, right?
Jan
--
#======================================================================#
# It's easier to get forgiveness for being wrong than for being right. #
# Let's break this rule - forgive me. #
#================================================== JanWieck(at)Yahoo(dot)com #
From | Date | Subject | |
---|---|---|---|
Next Message | Tom Lane | 2004-08-08 00:26:54 | Re: pgsql-server: Vacuum delay activated by default. |
Previous Message | Bruce Momjian | 2004-08-07 21:48:09 | pgsql-server: The attached patch implements a symlink for win32 using |