| From: | John Naylor <john(dot)naylor(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com> |
| Cc: | John Naylor <jcnaylor(at)gmail(dot)com>, David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Delay locking partitions during INSERT and UPDATE |
| Date: | 2019-01-20 04:45:25 |
| Message-ID: | CACPNZCu3CuxK5MuW6cTjDMhyzUSeO=2PaviuwQGiXgcyEfdrOQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Sat, Jan 19, 2019 at 10:59 AM Tomas Vondra
<tomas(dot)vondra(at)2ndquadrant(dot)com> wrote:
>
> On 1/19/19 12:05 AM, John Naylor wrote:
> > I used a similar test, but with unlogged tables, and "-c 2", and got:
> >
> > normal table: 32000tps
> > 10k partitions / master: 82tps
> > 10k partitions / patch: 7000tps
> >
> > So far I haven't gotten quite as good performance as you and Tomas,
> > although it's still a ~85x improvement.
>
> What hardware are you running the tests on? I wouldn't be surprised if
> you were hitting some CPU or I/O bottleneck, which we're not hitting.
9 year-old laptop, Core i3. Side note, I miswrote my test parameters
above -- should be "-c4 -j2".
--
John Naylor https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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