Slow nfsd write performance, tweaks needed

Mark Schouten mark at tuxis.nl
Tue Nov 18 09:45:55 UTC 2014


Hi,



J David <j.david.lists at gmail.com> , 17-11-2014 22:42:
On Mon, Nov 17, 2014 at 6:08 AM, Mark Schouten <mark at tuxis.nl> wrote: 
> Thanks for all your responses. I've setup a testserver to do some benchmarks, here are the results. Things are tested from inside a VM, that runs inside a Proxmox-VM, that runs on my Desktop (that performs pretty good, BTW :)) 
 
One thing that might also affect your performance testing is that 
FreeBSD disk I/O under KVM -- which is what Proxmox uses to run 
FreeBSD -- has historically been pretty terrible, especially with ZFS. 
The reasons for this are understood, I think, but last I heard the 
author of the virtio block driver was time-constrained and hadn't had 
a chance to work on it.


 I see that I've been unclear. FreeBSD was not running on the Proxmox-VM. FreeBSD was running on a 8Core Xeon with 32GB of RAM.


Met vriendelijke groeten,

-- 
Kerio Operator in de Cloud? https://www.kerioindecloud.nl/
Mark Schouten | Tuxis Internet Engineering
KvK: 61527076 | http://www.tuxis.nl/
T: 0318 200208 | info at tuxis.nl
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