Re: Improving compressibility of WAL files
От | Bruce Momjian |
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Тема | Re: Improving compressibility of WAL files |
Дата | |
Msg-id | 200901091431.n09EVW210201@momjian.us обсуждение исходный текст |
Ответ на | Re: Improving compressibility of WAL files (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: Improving compressibility of WAL files
Re: Improving compressibility of WAL files |
Список | pgsql-hackers |
Tom Lane wrote: > Bruce Momjian <bruce@momjian.us> writes: > > Tom Lane wrote: > >> Isn't this redundant given the existence of pglesslog? > > > It does the same as pglesslog, but is simpler to use because it is > > automatic. > > Which also means that everyone pays the performance penalty whether > they get any benefit or not. The point of the external solution > is to do the work only in installations that get some benefit. > We've been over this ground before... If there is a performance penalty, you are right, but if the zeroing is done as part of the archiving, it seems near zero cost enough to do it all the time, no? -- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + If your life is a hard drive, Christ can be your backup. +
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