Date: Sun, 26 Jan 1997 19:51:03 -0500 (EST) From: "John S. Dyson" <toor@dyson.iquest.net> To: dicen@hooked.net (RHS Linux User) Cc: freebsd-hackers@freebsd.org Subject: Re: What is the default for async in /etc/fstab? Message-ID: <199701270051.TAA20481@dyson.iquest.net> In-Reply-To: <32EBC635.4F86F1D5@hooked.net> from "RHS Linux User" at Jan 26, 97 01:01:41 pm
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> > Have other people tested ufs vs. ext2? The only docs I could find where > for ext2. A comparison with FreeBSD 2.0 I think, although it could have > been older. This was for some old Linux 1.xx. > The performance that I have measured (sequential -- IOZONE) is that FreeBSD is faster in both read/write. However, our metadata performance is slower (filecreates/deletes.) With -async, our metadata is still slower, but not by orders of magnitude. FreeBSD's cache perf is much faster (by factors of 3-4.) Much of it is due to the default block size (8K vs. 1K.) But the fragment size of an 8K UFS filesystem is the *same* as a 1K ext2fs. Both are very fast though. John
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