Date: Wed, 27 Oct 1999 12:30:52 -0400 (EDT) From: Chuck Robey <chuckr@picnic.mat.net> To: Ben Rosengart <ben@skunk.org> Cc: Chuck Youse <cyouse@paradox.nexuslabs.com>, Ilia Chipitsine <ilia@cgilh.chel.su>, questions@FreeBSD.ORG, hackers@FreeBSD.ORG Subject: Re: why FFS is THAT slower than EXT2 ? Message-ID: <Pine.BSF.4.10.9910271229520.29073-100000@picnic.mat.net> In-Reply-To: <Pine.BSF.4.10.9910271216060.94542-100000@penelope.skunk.org>
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On Wed, 27 Oct 1999, Ben Rosengart wrote: > On Wed, 27 Oct 1999, Chuck Youse wrote: > > > One of the biggest reasons for the difference: FreeBSD, by default, > > performs _synchronous_ metadata updates, and Linux performs asynchronous > > metadata updates. > > > > It's definitely a bit slower, but the payoff is in reliability. I have > > seen more than one [production!] Linux machine completely trash its > > filesystems because the implementors decided that their "NT-killer" must > > have good performance at the expense of serious, production-quality > > reliability. > > Read the post again -- they were using soft updates. Why is that important? Soft updates is still far better than an async filesystem. Have you lost files in panics? I haven't. > > -- > Ben Rosengart > > UNIX Systems Engineer, Skunk Group > StarMedia Network, Inc. > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message > ---------------------------------------------------------------------------- Chuck Robey | Interests include C programming, Electronics, 213 Lakeside Dr. Apt. T-1 | communications, and signal processing. Greenbelt, MD 20770 | I run picnic.mat.net: FreeBSD-current(i386) and (301) 220-2114 | jaunt.mat.net : FreeBSD-current(Alpha) ---------------------------------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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