| From: | Chapman Flack <chap(at)anastigmatix(dot)net> |
|---|---|
| To: | Michael Paquier <michael(at)paquier(dot)xyz>, Stephen Frost <sfrost(at)snowman(dot)net> |
| Cc: | Daniel Gustafsson <daniel(at)yesql(dot)se>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, 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: | 2018-03-27 22:32:08 |
| Message-ID: | 5ABAC668.5080203@anastigmatix.net |
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| Lists: | pgsql-hackers |
On 03/26/18 01:43, Michael Paquier wrote:
> Have a look at BKP_REMOVABLE then. This was moved to page headers in
> 2dd9322, still it seems to me that the small benefits outlined on this
> thread don't justify breaking tools relying on this flag set, especially
> if there is no replacement for it.
Is 2dd9322 a commit? I'm having difficulty finding it:
https://git.postgresql.org/gitweb/?p=postgresql.git&a=search&h=HEAD&st=commit&s=2dd9322
Am I searching wrong?
I probably won't have more time to look at this tonight, but could
I ask in advance for examples of tools that would need this bit when
encountering unwritten pages at the end of a segment?
I don't mean that as snark; it's just nonobvious to me and I might need
a little nudge where to look.
-Chap
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