Re: Load distributed checkpoint
| От | Bruce Momjian |
|---|---|
| Тема | Re: Load distributed checkpoint |
| Дата | |
| Msg-id | 200612281803.kBSI3oF17297@momjian.us обсуждение исходный текст |
| Ответ на | Re: Load distributed checkpoint ("Jim C. Nasby" <jim@nasby.net>) |
| Ответы |
Re: Load distributed checkpoint
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| Список | pgsql-hackers |
Jim C. Nasby wrote: > On Thu, Dec 28, 2006 at 12:50:19PM -0500, Bruce Momjian wrote: > > To summarize, if we could have fsync() only write the dirty buffers that > > happened as part of the checkpoint, we could delay the write() for the > > entire time between checkpoints, but we can't do that, so we have to > > make it user-tunable. > > What about the mmap/msync(?)/munmap idea someone mentioned? I see that as similar to using O_DIRECT during checkpoint, which had poor performance. -- Bruce Momjian bruce@momjian.us EnterpriseDB http://www.enterprisedb.com + If your life is a hard drive, Christ can be your backup. +
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