> Why VMIO dir works better if directories are placed close to each other? I
> think it only makes the cache data of an individual directory stay in the
> memory longer.  Is there a way to measure the effectiveness of the disk
> drive's cache?

The real performance gain is seen when doing stuff with large 
directory hierarchies such as /usr/ports or (I think) a squid cache.  
The close proximity of the directories means they can be read/written 
far more quickly than before (where they were specifically placed in 
different clusters).

> -Zhihui

Brian <[EMAIL PROTECTED]>                        <brian@[uk.]FreeBSD.org>
      <http://www.Awfulhak.org>                   <brian@[uk.]OpenBSD.org>
Don't _EVER_ lose your sense of humour !

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