| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Rod Taylor <rbt(at)rbt(dot)ca> |
| Cc: | Neil Conway <neilc(at)samurai(dot)com>, Greg Copeland <greg(at)CopelandConsulting(dot)Net>, shridhar_daithankar(at)persistent(dot)co(dot)in, PostgresSQL Hackers Mailing List <pgsql-hackers(at)postgresql(dot)org>, PostgresSQL General Mailing List <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: [HACKERS] Performance while loading data and indexing |
| Date: | 2002-09-26 21:47:43 |
| Message-ID: | 200209262147.g8QLlhU10159@candle.pha.pa.us |
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| Lists: | pgsql-general pgsql-hackers pgsql-performance |
Rod Taylor wrote:
> > Yes, before UFS had soft updates, the synchronous nature of UFS made it
> > slower than ext2, but now with soft updates, that performance difference
> > is gone so you have two files systems, ext2 and ufs, similar peformance,
> > but one is crash-safe and the other is not.
>
> Note entirely true. ufs is both crash-safe and quick-rebootable. You
> do need to fsck at some point, but not prior to mounting it. Any
> corrupt blocks are empty, and are easy to avoid.
I am assuming you need to mount the drive as part of the reboot. Of
course you can boot fast with any file system if you don't have to mount
it. :-)
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073
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