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From: Rob Banz (no email)
Date: Sat Dec 01 2007 - 12:27:17 EST
I enabled it a few weeks ago before I left UMBC, and it certainly
seemed to help write performance on the ZFS pool -- we started seeing
the larger batched writes on those devices, instead of a constant
stream of itty bity IOs caused by the constant fsync'ing.
If you feel that your filesystem/buffercache will do a good job at
writing things out to disk, and you've got battery-backed cache on
your storage, you should be relatively well off.
-rob
On Nov 30, 2007, at 19:59, Vincent Fox wrote:
> How "unsafe" is setting in imapd.conf
>
> skiplist_unsafe: 1
>
> Our /var/cyrus/imap filesystem is on a ZFS mirror set on
> arrays with dual controllers so OS and/or hardware
> corruption is remote.
>
> The application can scramble it but that can happen
> whether we have sync or not eh?
>
> Anything I am missing?
>
> ----
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