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To: SysAdmin - Ng Pheng Siong <lsys@np.ac.sg>
cc: hackers@FreeBSD.org
Subject: Re: Filesystem(?) preformance - 1.x and 2.0 
In-reply-to: Your message of "Tue, 10 Jan 95 19:58:21 +0800."
             <199501101201.EAA10332@freefall.cdrom.com> 
From: David Greenman <davidg@Root.COM>
Reply-To: davidg@Root.COM
Date: Tue, 10 Jan 1995 04:57:24 -0800
Sender: hackers-owner@FreeBSD.org
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>Didn't see any response to a previous post, so I'll try again. Hopefully
>someone can clue me in.
>
>I have 1.x unpatched-final-current and 2.0R (2.1.0 kernel supped on
>4th/5th Dec) running on identical hardware alongside each other.
>
>Somehow, the 2.0 system feels slower. Iozone reports thusly:

   According to your iozone results, reads on 2.0 are twice as fast while
writes are slightly slower. The specific problem regarding performance of
'man' is likely caused by differences in the way that the manual pages are
stored. 2.0 stores the manual pages in gzip compressed nroff format to save
space, while 1.x installed the manual pages in uncompressed 'cat' format.
Also, the cat directories aren't part of the 2.0 distribution, so the system
must uncompress and format the manual page every time 'man' is used on it.
If you create 'cat' directories, the system will keep the uncompressed 'cat'
format page around for future lookup.
   Hope this helps.

-DG