Re: PSQL performance - TPS

From: Andres Freund <andres(at)anarazel(dot)de>
To: Purav Chovatia <puravc(at)gmail(dot)com>
Cc: Shital A <brightuser2019(at)gmail(dot)com>, pgsql-performance(at)lists(dot)postgresql(dot)org
Subject: Re: PSQL performance - TPS
Date: 2019-08-01 18:14:58
Message-ID: 20190801181458.52zcdeahsj3fpwup@alap3.anarazel.de
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Hi,

On 2019-08-01 23:36:33 +0530, Purav Chovatia wrote:
> > If you've set synchronous_commit = off, and you still get only 1200
> > transactions/sec, something else is off. Are you sure you set that?
> I am not very surprised with these results. However, what’s the disk type?
> That can matter quite a bit.

Why aren't you surprised? I can easily get 20k+ write transactions/sec
on my laptop, with synchronous_commit=off. With appropriate
shared_buffers and other settings, the disk speed shouldn't matter that
much for in insertion mostly workload.

Greetings,

Andres Freund

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