slowdown of zfs (tx->tx)
Steven Hartland
killing at multiplay.co.uk
Mon Jan 14 00:05:36 UTC 2013
----- Original Message -----
From: "Nicolas Rachinsky" <fbsd-mas-0 at ml.turing-complete.org>
To: "Steven Hartland" <killing at multiplay.co.uk>
Cc: "freebsd-fs" <freebsd-fs at freebsd.org>
Sent: Sunday, January 13, 2013 11:52 PM
Subject: Re: slowdown of zfs (tx->tx)
>* Steven Hartland <killing at multiplay.co.uk> [2013-01-11 13:58 -0000]:
>> TBH looks like your just saturating your disks with the number of IOP's
>> your doing.
>
> But now a backup takes forever (16hours and more) that took less than
> 30 minutes two weeks ago.
>
> I duplicated the complete setup to another (slower) server. There the
> backups are slower than they were on this machine, but they are much
> faster than on this machine.
Its not something silly like you have 4k disks which aren't 4k aligned
is it?
IIRC you where using rsync, is there a reason why you aren't using
zfs send - recv?
Regards
Steve
================================================
This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it.
In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337
or return the E.mail to postmaster at multiplay.co.uk.
More information about the freebsd-fs
mailing list