Re: LARGE single-system Cyrus installs?

[Gerard <gerard.cluster@xxxxxxxxx>]

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 <banz@xxxxxxxx> 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

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