| From: | Jesper Pedersen <jesper(dot)pedersen(at)redhat(dot)com> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Reduce ProcArrayLock contention |
| Date: | 2015-08-07 16:49:20 |
| Message-ID: | 55C4E190.3050104@redhat.com |
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| Thread: | |
| Lists: | pgsql-hackers |
On 08/07/2015 11:40 AM, Robert Haas wrote:
> On Fri, Aug 7, 2015 at 10:30 AM, Jesper Pedersen
> <jesper(dot)pedersen(at)redhat(dot)com> wrote:
>> Just thought I would post it in this thread, because this change does help
>> on the performance numbers compared to 9.5 :)
>
> So are you saying that the performance was already worse before this
> patch landed, and then this patch made it somewhat better? Or are you
> saying you think this patch broke it?
>
No, this patch helps on performance - there is an improvement in numbers
between
and
but you will have to use a 9.5 pgbench to see it, especially with higher
client counts.
Best regards,
Jesper
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