From: Nathan Bossart <nathandbossart@gmail.com>
To: Thomas Munro <thomas.munro@gmail.com>
Cc: pgsql-hackers@postgresql.org
Subject: Re: connection establishment versus parallel workers
Date: Thu, 19 Dec 2024 10:09:35 -0600
Message-ID: <Z2RFP_4tEEImDfrl@nathan> (raw)
In-Reply-To: <CA+hUKG+0Su_d71N3vL9K=JpEHm=FzjZYpNntwAdHi+Qsfbimhg@mail.gmail.com>
References: <Z1n5UpAiGDmFcMmd@nathan>
<CA+hUKGLOcxUa6m7UinPN1gZXFyr92L8btG_pGTHPiWY2YbRw2w@mail.gmail.com>
<CA+hUKGLnaskegyFs8mJu62aa81cPPCkq_Bwf46hge_9Q7=J8TQ@mail.gmail.com>
<Z1tc87_2lsiFwL-l@nathan>
<CA+hUKG+0Su_d71N3vL9K=JpEHm=FzjZYpNntwAdHi+Qsfbimhg@mail.gmail.com>
Sorry for the delay, and thanks again for digging into this.
On Fri, Dec 13, 2024 at 03:56:00PM +1300, Thomas Munro wrote:
> 0001 patch is unchanged, 0002 patch sketches out a response to the
> observation a couple of paragraphs above.
Both of these patches seem to improve matters quite a bit. I haven't yet
thought too deeply about it all, but upon a skim, your patches seem
entirely reasonable to me.
However, while this makes the test numbers for >= v16 look more like those
for v15, we're also seeing a big jump from v13 to v14. This bisects pretty
cleanly to commit d872510. I haven't figured out _why_ this commit is
impacting this particular test, but I figured I'd at least update the
thread with what we know so far.
--
nathan
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To: pgsql-hackers@postgresql.org
Cc: nathandbossart@gmail.com, thomas.munro@gmail.com
Subject: Re: connection establishment versus parallel workers
In-Reply-To: <Z2RFP_4tEEImDfrl@nathan>
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