Re: pglz performance
От | Tomas Vondra |
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Тема | Re: pglz performance |
Дата | |
Msg-id | 20190802194859.qxzxq2achzottkup@development обсуждение исходный текст |
Ответ на | Re: pglz performance (Andres Freund <andres@anarazel.de>) |
Ответы |
Re: pglz performance
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Список | pgsql-hackers |
On Fri, Aug 02, 2019 at 11:20:03AM -0700, Andres Freund wrote: >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. > I meant different toast values using different compression algorithm, sorry for the confusion. > >> 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. > OK. I'd say to require a system library, but that's a minor detail. regards -- Tomas Vondra http://www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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