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From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Olivier Mueller <om-lists-bsd@omx.ch>
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Cc: freebsd-performance@freebsd.org, freebsd-questions@freebsd.org
Subject: Re: filesystem: 12h to delete 32GB of data
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> -> it took about 12 hours to delete these 30GB of files and
> sub-directories (smarty cache files: many small files in many dirs).
> It's a little bit surprising, as it's on a recent HP proliant DL360 g5
> with SAS disks (Raid1) running freebsd 6.x
> ( /dev/da0s1f on /usr (ufs, local, soft-updates) )
>
if you would use no raid or software raid it will behave normally.

it takes <30 minutes for me to delete 300GB of squid files on 
ordinary SATA disk , millions of small files.