| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com> |
| Cc: | Andrey Borodin <x4mmm(at)yandex-team(dot)ru>, Konstantin Knizhnik <k(dot)knizhnik(at)postgrespro(dot)ru>, Michael Paquier <michael(at)paquier(dot)xyz>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Vladimir Leskov <vladimirlesk(at)yandex-team(dot)ru> |
| Subject: | Re: pglz performance |
| Date: | 2019-08-02 18:20:03 |
| Message-ID: | 20190802182003.u477q6itwudieqxf@alap3.anarazel.de |
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| Lists: | pgsql-hackers |
Hi,
On 2019-08-02 19:52:39 +0200, Tomas Vondra wrote:
> Hmmm, I don't remember the details of those patches so I didn't realize
> it allows incremental recompression. If that's possible, that would mean
> existing systems can start using it. Which is good.
That depends on what do you mean by "incremental"? A single toasted
datum can only have one compression type, because we only update them
all in one anyway. But different datums can be compressed differently.
> Another question is whether we'd actually want to include the code in
> core directly, or use system libraries (and if some packagers might
> decide to disable that, for whatever reason).
I'd personally say we should have an included version, and a
--with-system-... flag that uses the system one.
Greetings,
Andres Freund
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