Re: Call pqPipelineFlush from PQsendFlushRequest

From: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>
To: Michael Paquier <michael(at)paquier(dot)xyz>
Cc: Jelte Fennema-Nio <postgres(at)jeltef(dot)nl>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Call pqPipelineFlush from PQsendFlushRequest
Date: 2023-11-07 11:43:18
Message-ID: 202311071143.esaw2i2krha3@alvherre.pgsql
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On 2023-Nov-07, Michael Paquier wrote:

> On Tue, Nov 07, 2023 at 10:38:04AM +0100, Jelte Fennema-Nio wrote:
> > In pipeline mode after queuing a message to be sent we would flush the
> > buffer if the size of the buffer passed some threshold. The only message
> > type that we didn't do that for was the Flush message. This addresses
> > that oversight.
> >
> > I noticed this discrepancy while reviewing the
> > PQsendSyncMessage/PQpipelinePutSync patchset.
>
> Indeed, it looks a bit strange that there is no flush if the buffer
> threshold is reached once the message is sent, so your suggestion
> sounds right. Alvaro?

I agree, and I intend to get this patch pushed once the release freeze
is lifted.

--
Álvaro Herrera Breisgau, Deutschland — https://www.EnterpriseDB.com/
"The Gord often wonders why people threaten never to come back after they've
been told never to return" (www.actsofgord.com)

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