<div>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).<br></div><div class="protonmail_signature_block-empty"><br></div><div class="protonmail_signature_block protonmail_signature_block-empty"><div class="protonmail_signature_block-user protonmail_signature_block-empty"><div><br></div></div><div class="protonmail_signature_block-proton protonmail_signature_block-empty"><br></div></div><div class="protonmail_signature_block-empty"><br></div><div><br></div><div>Best,<br></div><div>M.<br></div><div><br></div><blockquote type="cite" class="protonmail_quote"><div>-------- Original Message --------<br></div><div>Subject: Re: [Gluster-users] Production cluster planning<br></div><div>Local Time: October 26, 2016 10:31 PM<br></div><div>UTC Time: October 26, 2016 8:31 PM<br></div><div>From: lindsay.mathieson@gmail.com<br></div><div>To: Gandalf Corvotempesta <gandalf.corvotempesta@gmail.com><br></div><div>gluster-users <gluster-users@gluster.org><br></div><div><br></div><div>On 27/10/2016 3:53 AM, Gandalf Corvotempesta wrote:<br></div><div>
> Are you using any ZFS RAID on your servers?<br></div><div>
<br></div><div>
Yah, RAID10.<br></div><div>
<br></div><div>
- Two nodes with 4 WD 3TB RED<br></div><div>
<br></div><div>
- One node with 2 WD 3TB reds and 6 * 600MB SAS Velocirtprs<br></div><div>
<br></div><div>
<br></div><div>
High Endurance High Speed SSD's for SLOG devices on each node. Std SSD's <br></div><div>
don't cut it, I've run through a lot of them. ZFS/Gluster/VM Hosting <br></div><div>
generates an extraordinary amount of writes. And the quoted write speeds <br></div><div>
for most SSD's are for *compressible* data, their performance goes to <br></div><div>
shit when you write pre-compressed data to them, which I have activated <br></div><div>
for ZFS.<br></div><div>
<br></div><div>
<br></div><div>
-- <br></div><div>
Lindsay Mathieson<br></div><div>
<br></div><div>
_______________________________________________<br></div><div>
Gluster-users mailing list<br></div><div>
Gluster-users@gluster.org<br></div><div>
http://www.gluster.org/mailman/listinfo/gluster-users<br></div></blockquote><div><br></div>