[pve-devel] [PATCH] iothreads : create 1 iothread by virtio device

Alexandre DERUMIER aderumier at odiso.com
Fri Jan 30 08:13:55 CET 2015


>>Our hosts are fairly powerful (E5-2697v2), as are our ceph hosts. 

That seem great :)   I'm going to use around same cpu. (a little bit less cores (10), but 3,1ghz frequency)


>>We will run some more benchmarks shortly using KRBD + iothreads and report back. 

Ok thanks.
Also, when I have done test, I had need to install irqbalance daemon, because I have some bottleneck around 60000iops,
then with irqbalance I have jump to 120000 iops.


I think a good start is to test with "fio", with krbd and librbd  on host to compare base performance.

Then test inside the vms guests.

I'll try to post my results next month




----- Mail original -----
De: "Andrew Thrift" <andrew at networklabs.co.nz>
À: "aderumier" <aderumier at odiso.com>
Cc: "dietmar" <dietmar at proxmox.com>, "pve-devel" <pve-devel at pve.proxmox.com>
Envoyé: Vendredi 30 Janvier 2015 04:52:45
Objet: Re: [pve-devel] [PATCH] iothreads : create 1 iothread by virtio device

Hi Alexandre, List 
Thanks for your very informative email. 

Our hosts are fairly powerful (E5-2697v2), as are our ceph hosts. 

We will run some more benchmarks shortly using KRBD + iothreads and report back. 


Regards, 



Andrew 

On Thu, Jan 29, 2015 at 9:20 PM, Alexandre DERUMIER < aderumier at odiso.com > wrote: 


>>Would be interesting to additionally benchmark with sheepdog, so that we can 
>>compare ;-) 

Why not, I'll try to see if I can do it. 
Also compare with a local raw file on ssd. 



----- Mail original ----- 
De: "dietmar" < dietmar at proxmox.com > 
À: "aderumier" < aderumier at odiso.com > 
Cc: "pve-devel" < pve-devel at pve.proxmox.com > 
Envoyé: Jeudi 29 Janvier 2015 08:54:43 
Objet: Re: [pve-devel] [PATCH] iothreads : create 1 iothread by virtio device 

> I going to have a full ssd ceph cluster next month (18x s 3500 on 3 hosts), 
> with more powerfull nodes and more powerfull clients (20 cores 3,1Gghz) 
> 
> I'll do benchmarks and post results with differents setup. 

Would be interesting to additionally benchmark with sheepdog, so that we can 
compare ;-) 
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