[Gluster-users] Production cluster planning

[mabi]

I was wondering with your setup you mention, how high are your context switches? I mean what is your typical average context switch and what are your highest context switch peeks (as seen in iostat).







Best,
M.


-------- Original Message --------
Subject: Re: [Gluster-users] Production cluster planning
Local Time: October 26, 2016 10:31 PM
UTC Time: October 26, 2016 8:31 PM
From: lindsay.mathieson at gmail.com
To: Gandalf Corvotempesta <gandalf.corvotempesta at gmail.com>
gluster-users <gluster-users at gluster.org>

On 27/10/2016 3:53 AM, Gandalf Corvotempesta wrote:
> Are you using any ZFS RAID on your servers?

Yah, RAID10.

- Two nodes with 4 WD 3TB RED

- One node with 2 WD 3TB reds and 6 * 600MB SAS Velocirtprs


High Endurance High Speed SSD's for SLOG devices on each node. Std SSD's
don't cut it, I've run through a lot of them. ZFS/Gluster/VM Hosting
generates an extraordinary amount of writes. And the quoted write speeds
for most SSD's are for *compressible* data, their performance goes to
shit when you write pre-compressed data to them, which I have activated
for ZFS.


--
Lindsay Mathieson

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