From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
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To: | Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com> |
Cc: | "Drouvot, Bertrand" <bertranddrouvot(dot)pg(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers(at)postgresql(dot)org, Jeff Davis <pgsql(at)j-davis(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> |
Subject: | Re: walsender performance regression due to logical decoding on standby changes |
Date: | 2023-05-15 04:48:51 |
Message-ID: | CA+hUKG+iywOmdiGMOegUXuVDQzhgpSx9c5vpzOvYUEVDu_gZBQ@mail.gmail.com |
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On Fri, May 12, 2023 at 11:58 PM Bharath Rupireddy
<bharath(dot)rupireddyforpostgres(at)gmail(dot)com> wrote:
> Andres, rightly put it - 'mis-using' CV infrastructure. It is simple,
> works, and makes the WalSndWakeup() easy solving the performance
> regression.
Yeah, this seems OK, and better than the complicated alternatives. If
one day we want to implement CVs some other way so that this
I-know-that-CVs-are-really-made-out-of-latches abstraction leak
becomes a problem, and we still need this, well then we can make a
separate latch-wait-list thing.
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