Re: Big 7.1 open items - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: Big 7.1 open items
Date
Msg-id 200006190024.UAA20248@candle.pha.pa.us
Whole thread Raw
In response to Re: Big 7.1 open items  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
> JanWieck@t-online.de (Jan Wieck) writes:
> > Thomas Lockhart wrote:
> >> Those who live in HP houses should not throw stones :))
> 
> >     Huh?  Up to HPUX-9 they used to have BSD-FFS - even if it was
> >     a 4.2 BSD one - no?
> 
> Yeah, the standard HPUX filesystem is still BSD ... and it still runs
> rings around Linux extfs2 in my experience.  (I've been informed that
> Linux has better filesystems than extfs2, but that seems to be what
> the average Linux user is running.)  I have a realtime data collection
> program that usually wants to write several thousand small files during
> shutdown.  The shutdown typically takes about 3 minutes on an HP 715/75,
> upwards of 10 minutes on a Linux box with nominally-faster hardware.
> 
> BTW, HP is trying to sell people on using a new journaling filesystem
> that they claim outperforms BSD, but my few experiments with it
> haven't encouraged me to pursue it.

You should really try the BSD4.4 FFS with soft updates.  It re-orders
disk flushes to greatly improve performance.  It really is great.  


--  Bruce Momjian                        |  http://www.op.net/~candle pgman@candle.pha.pa.us               |  (610)
853-3000+  If your life is a hard drive,     |  830 Blythe Avenue +  Christ can be your backup.        |  Drexel Hill,
Pennsylvania19026
 


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