We have also come across the situation where we needed to make a move from file systems. We ended up going with Veritas file system which we saw the greatest increase in performance from simply changing the main file system. It was a big win when we realized the file system actually didn't cost anything.
On 10/5/07, Robert Banz <[EMAIL PROTECTED]> wrote: > > > > > > On Oct 5, 2007, at 10:01, John Madden wrote: > > >> I think that this is partly because ext3 does more aggressive read > >> ahead > >> (which would be a mixed blessing under heavy load), partly because > >> reiserfs suffers from fragmentation. I imagine that there is > >> probably a > >> tipping point under the sort of very heavy load that Fastmail see. > > > > I second that - reiserfs seems to be truly horrible in write-heavy > > situations. Worse, a backup of our remaining reiserfs partition takes > > *days* to complete -- 165GB at ~500k/s. And this is a 32-disk > > stripe of > > fibre channel. > > I think what truly scares me about reiser is those rather regular > posts to various mailing lists I'm on saying "my reiser fs went poof > and lost all my data, what should I do?" > > -rob > > ---- > Cyrus Home Page: http://cyrusimap.web.cmu.edu/ > Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki > List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html >
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