| From: | Joe Conway <mail(at)joeconway(dot)com> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, David Gould <daveg(at)sonic(dot)net> |
| Cc: | Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Pg Bugs <pgsql-bugs(at)postgresql(dot)org>, Josh Berkus <josh(at)agliodbs(dot)com> |
| Subject: | Re: BUG #13750: Autovacuum slows down with large numbers of tables. More workers makes it slower. |
| Date: | 2016-03-02 16:12:51 |
| Message-ID: | 56D71103.7060500@joeconway.com |
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| Lists: | pgsql-bugs |
On 03/02/2016 07:35 AM, Alvaro Herrera wrote:
> David Gould wrote:
>> The following is a summary of strace output for the autovacuum workers
>> and the stats collector while the 40k table test is running. The counts and
>> times are the cost per table.
>>
>> postgresql 9.5: 85 tables per minute.
>
>> + autovacuum contention patch: 5225 tables per minute
>
> Great stuff. I intend to look at this as a backpatchable bug fix during
> this commitfest.
+1!
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