Re: [HACKERS] AdvanceXLInsertBuffer vs. WAL segment compressibility

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Chapman Flack <chap(at)anastigmatix(dot)net>
Cc: Stephen Frost <sfrost(at)snowman(dot)net>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, Daniel Gustafsson <daniel(at)yesql(dot)se>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Robert Haas <robertmhaas(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [HACKERS] AdvanceXLInsertBuffer vs. WAL segment compressibility
Date: 2018-03-30 23:11:02
Message-ID: 11426.1522451462@sss.pgh.pa.us
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Chapman Flack <chap(at)anastigmatix(dot)net> writes:
> On 03/30/18 16:21, Tom Lane wrote:
>> I did not like the proposed test case too much, particularly not its
>> undocumented API change for check_pg_config,

> Other than that API change, was there something the test case could have
> done differently to make you like it more?

Well, if that'd been properly documented I'd probably have pushed it
without complaint. But I did wonder whether it could've been folded
into one of the existing tests of pg_switch_wal(). This doesn't seem
like a property worth spending a lot of cycles on testing.

regards, tom lane

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