Re: New 8.4 hot standby feature
От | Gabi Julien |
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Тема | Re: New 8.4 hot standby feature |
Дата | |
Msg-id | 200901291239.01611.gabi.julien@broadsign.com обсуждение исходный текст |
Ответ на | Re: New 8.4 hot standby feature (Simon Riggs <simon@2ndQuadrant.com>) |
Список | pgsql-general |
On Thursday 29 January 2009 02:43:18 you wrote: > On Tue, 2009-01-27 at 12:53 -0500, Gabi Julien wrote: > > I have merged the last hot standby patch (v9g) to 8.4 devel and I am > > pleased with the experience. This is promising stuff. > > Thanks, > > > Perhaps it is a bit too soon to > > ask questions here but here it is: > > Thanks very much for the bug report. > > > 1. Speed of recovery > > > > With a archive_timeout of 60 seconds, it can take about 4 minutes before > > I see the reflected changes in the replica. This is normal since, in > > addition to the WAL log shipping, it takes more time to do the recovery > > itself. Still, is there any way besides the archive_timeout config option > > to speed up the recovery of WAL logs on the hot standby? > > There was a reported bug whose apparent symptoms were delay of WAL > files. The bug was not in fact anything to do with that at all, it was > just delayed *visibility*. So I doubt very much that you have a > performance problem. > > The bug fix patch is attached, verified to solve the problem. Thanks. Please discard all my previous comments. This was the true source of the issue that I was experiencing.
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