*BSD News Article 60698


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From: hjl@zoom.com (H J Lu)
Newsgroups: comp.unix.bsd.freebsd.misc,comp.os.linux.development.system
Subject: Re: The better (more suitable)Unix?? FreeBSD or Linux
Followup-To: comp.unix.bsd.freebsd.misc,comp.os.linux.development.system
Date: 4 Feb 1996 23:39:20 -0800
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References: <4er9hp$5ng@orb.direct.ca> <311250C2.2781E494@public.uni-hamburg.de> <strenDM7Gr4.Cn2@netcom.com> <4f27sc$13a@dyson.iquest.net>
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John S. Dyson (root@dyson.iquest.net) wrote:
: In article <strenDM7Gr4.Cn2@netcom.com>,
: Sam Trenholme <stren@netcom.com> wrote:
: >[Since we are comparing Linux and FreeBSD, in hopefully a constructive way,
: > I have posted this to both a Linux and a FreeBSD newsgroup]
: >
: >>On http://plastique.stanford.edu/ you'll find an extensive
: >>work comparing Linux(1.2.8), FreeBSD 2.05, and Solaris 2.4.
: >>
: >>The jist is:
: >>- Linux has best FileSystem-Performance (because it's doing FS-Updates
: >>  asychronously)
: >
: >Hmmm.... I remeber a long thread where people were arguing this-- and I 
: >get the sense that FFS was faster than Ext2Fs.
: >
: FFS on FreeBSD is signficantly faster on sequential transfers than EXT2FS
: on Linux.  FFS on FreeBSD does synchronous meta-data updates conservatively,
: while EXT2FS on Linux is more aggressive about write-behind caching of
: meta-data (therefore the meta-data in memory is out-of-sync for a longer
: time with meta-data on disk.)  The Linux approach is faster for bulk
: directory operations, but -current FreeBSD does a bit to mitigate the

Let me put it in another way: Linux feels faster for the day-to-day
work. You usually don't copy large files very often.

: difference by supporting an async option for mounts.  FreeBSD IS faster
: for copying large files (even the most recent Linux vs. most recent FreeBSD.) 


H.J.