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Re: Improve WALRead() to suck data directly from WAL buffers when possible - Mailing list pgsql-hackers

From Jeff Davis
Subject Re: Improve WALRead() to suck data directly from WAL buffers when possible
Date
Msg-id 628b07b79743e2614ab1724f516cbd41560d6551.camel@j-davis.com
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In response to Re: Improve WALRead() to suck data directly from WAL buffers when possible  (Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com>)
Responses Re: Improve WALRead() to suck data directly from WAL buffers when possible  (Andres Freund <andres@anarazel.de>)
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On Mon, 2022-12-26 at 14:20 +0530, Bharath Rupireddy wrote:
> Please review the attached v2 patch further.

I'm still unclear on the performance goals of this patch. I see that it
will reduce syscalls, which sounds good, but to what end?

Does it allow a greater number of walsenders? Lower replication
latency? Less IO bandwidth? All of the above?


--
Jeff Davis
PostgreSQL Contributor Team - AWS

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