Re: Megabytes of stats saved after every connection
От | Alvaro Herrera |
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Тема | Re: Megabytes of stats saved after every connection |
Дата | |
Msg-id | 20050729010833.GL6807@alvh.no-ip.org обсуждение исходный текст |
Ответ на | Re: Megabytes of stats saved after every connection ("Guy Rouillier" <guyr@masergy.com>) |
Список | pgsql-general |
On Thu, Jul 28, 2005 at 05:48:21PM -0500, Guy Rouillier wrote: > Jan Wieck wrote: > > > Then again, the stats file is only written. There is nothing that > > actually forces the blocks out. On a busy system, one individual stats > > file will be created, written to, renamed, live for 500ms and be > > thrown away by the next stat files rename operation. I would assume > > that with a decent filesystem and appropriate OS buffers, none of the > > data blocks of most stat files even hit the disk. I must be missing > > something. > > (From someone who is at best semi-informed).. Unless battery-backed > cache is available, we are advised to run with fsync enabled. Wouldn't > that affect the stats files as well? The stats file is dispensable. In fact, it has been proposed that on crash recovery the stat file should be deleted. -- Alvaro Herrera (<alvherre[a]alvh.no-ip.org>) "Y eso te lo doy firmado con mis lágrimas" (Fiebre del Loco)
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