| From: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
|---|---|
| To: | Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk> |
| Cc: | Amit Kapila <akapila(at)postgresql(dot)org>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, John Naylor <john(dot)naylor(at)2ndquadrant(dot)com>, pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: pgsql: Avoid creation of the free space map for small heap relations. |
| Date: | 2019-01-28 05:57:58 |
| Message-ID: | CAA4eK1LNj9MZOngxdK3GYcPJJvs8DLmnWbSR3o0W-xshuafrTA@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-committers pgsql-hackers |
On Mon, Jan 28, 2019 at 11:10 AM Andrew Gierth
<andrew(at)tao11(dot)riddles(dot)org(dot)uk> wrote:
>
> >>>>> "Amit" == Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> writes:
>
> Amit> Yes, so this could be the cause of the problem. I think we need
> Amit> to change the tests added by the patch such that they don't rely
> Amit> on vacuum to remove dead-row versions? Do you or anybody else see
> Amit> any better way to fix this?
>
> Do you just need to create free space on a page that didn't have enough
> before? It might be worth tweaking the fillfactor rather than trying to
> delete anything.
>
No, it also depends on vacuum to remove rows and then truncate the
relation accordingly.
--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Tom Lane | 2019-01-28 06:01:10 | Re: pgsql: Avoid creation of the free space map for small heap relations. |
| Previous Message | Amit Kapila | 2019-01-28 05:56:11 | Re: pgsql: Avoid creation of the free space map for small heap relations. |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Amit Langote | 2019-01-28 05:59:01 | Re: speeding up planning with partitions |
| Previous Message | Michael Paquier | 2019-01-28 05:57:02 | Re: A few new options for vacuumdb |