From: | Petr Jelinek <petr(dot)jelinek(at)2ndquadrant(dot)com> |
---|---|
To: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Use sync commit for logical replication apply in TAP tests |
Date: | 2017-04-20 13:46:35 |
Message-ID: | f768995b-8d60-eb73-9148-a21344f432d5@2ndquadrant.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
On 20/04/17 14:57, Peter Eisentraut wrote:
> On 4/18/17 22:25, Petr Jelinek wrote:
>> The commit 887227a1c changed the defaults for subscriptions to do async
>> commit. But since the tests often wait for disk flush and there is no
>> concurrent activity this has increased the amount of time needed for
>> each test. So the attached patch changes the subscriptions create in tab
>> tests to use sync commit which improves performance there (because we
>> also replicate only very few transactions in the tests).
>
> I see only a 1.5% (1s/70s) improvement in the run time of the whole test
> suite from this. Is that what you were expecting?
>
Hmm, on my machine the difference is around 50% (~1m vs ~2m).
--
Petr Jelinek http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
From | Date | Subject | |
---|---|---|---|
Next Message | Dilip Kumar | 2017-04-20 14:01:51 | Re: Logical replication ApplyContext bloat |
Previous Message | Stas Kelvich | 2017-04-20 13:34:02 | Re: Logical replication ApplyContext bloat |