Date: Tue, 22 May 2001 14:49:21 -0400 From: Jason Andresen <jandrese@mitre.org> To: "Albert D. Cahalan" <acahalan@cs.uml.edu> Cc: ccf@master.ndi.net, gordont@bluemtn.net, jkh@osd.bsdi.com, freebsd-hackers@freebsd.org Subject: Re: technical comparison Message-ID: <3B0AB4B1.78A0FB0A@mitre.org> References: <200105221816.f4MIGK1171051@saturn.cs.uml.edu>
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"Albert D. Cahalan" wrote: > > Jason Andresen writes: > > Er, I don't think ReiserFS is in the Linux kernel yet, although it is > > the default filesystem on some distros apparently. I think Linus has > > some reservations about the stability of the filesystem since it is > > It is in the kernel: > http://lxr.linux.no/source/fs/reiserfs/?v=2.4.4 > Bugs died left and right when it went in. Looks like my news was out of date. Thanks for the update. > > fairly new. That said, it would be hard to be much worse than Ext2fs > > with write cacheing enabled (default!) in the event of power failure. > > We only have three Linux boxes here (and one is a PC104 with a flash > > disk) and already I've had to reinstall the entire OS once when we had a > > power glitch. ext2fsck managed to destroy about 1/3 of the files on the > > system, in a pretty much random manner (the lib and etc were hit hard). > > If you don't like ext2, why should it like you? :-) > I power cycle a Linux box nearly every day to reset > a board. > > > If only FreeBSD could boot from those funky M-Systems flash disks. > > If you want flash, use a filesystem designed for flash. > (not UFS, ext2, Reiserfs, XFS, JFS, or FAT... try JFFS2) > > >> So, no async here, and "UFS + soft updates" can't touch the > >> performance on huge directories. > > >From another email you mention benchmarking with: > > > Linux 2.2.16 with ext2fs and write caching > > 10000 transactions, 60000 simultanious files: > > 1. The 2.2.16 kernel is obsolete. > 2. 60000 files is not a lot. Try a few million files. 60000 files took ~15 minutes to create as is. I'm going to have to wait until tonight to run larger sets. 2.2.16 is what we have here. I'm still waiting to see how much faster ReiserFS is. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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