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help / color / mirror / Atom feedFrom: Jeff Davis <[email protected]>
To: Bharath Rupireddy <[email protected]>
Cc: Jingtang Zhang <[email protected]>
Cc: [email protected]
Cc: Nitin Jadhav <[email protected]>
Subject: Re: Use WALReadFromBuffers in more places
Date: Wed, 24 Sep 2025 11:27:43 -0700
Message-ID: <[email protected]> (raw)
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On Wed, 2025-09-24 at 07:26 -0700, Bharath Rupireddy wrote:
> Right. Reading unflushed WAL buffers for replication was one of the
> motivations. But, in general, WALReadFromBuffers has more benefits
> since it lets WAL buffers act as a cache for reads, avoiding the need
> to re-read WAL from disk for (both physical and logical) replication.
> For example, it makes the use of direct I/O for WAL more realistic
> and
> can provide significant performance benefits [1].
Is it possible to do a POC that shows the potential benefit, or are we
still too far away?
Regards,
Jeff Davis
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Subject: Re: Use WALReadFromBuffers in more places
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