| From: | "Steven Flatt" <steven(dot)flatt(at)gmail(dot)com> |
|---|---|
| To: | "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Insertion to temp table deteriorating over time |
| Date: | 2006-12-15 18:26:31 |
| Message-ID: | 357fa7590612151026t4ae033f6w5367cac9d0b67064@mail.gmail.com |
| Views: | Whole Thread | Raw Message | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
Good question, and I agree with your point.
Are the removable rows in pg_class even an issue? So what if 5000-6000 dead
tuples are generated every hour then vacuumed? Performance continues to
steadily decline over a few days time. Memory usage does not appear to be
bloating. Open file handles remain fairly fixed. Is there anything else I
can monitor (perhaps something to do with the odbc connection) that I could
potentially correlate with the degrading performance?
Steve
On 12/15/06, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
> Oh, then where *are* the removable rows coming from? At this point I
> think that the truncate/refill thing is not the culprit, or at any rate
> is only one part of a problematic usage pattern that we don't see all of
> yet.
>
> regards, tom lane
>
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Tom Lane | 2006-12-15 19:09:48 | Re: Insertion to temp table deteriorating over time |
| Previous Message | Tom Lane | 2006-12-15 18:06:46 | Re: Insertion to temp table deteriorating over time |