Open Stack

> On 20 Jan 2015, at 17:14, Piotr Korthals <piotr.korthals at intel.com> wrote:
> 
> Hi,
> 
> I am facing issue with performance of 10 Gigabit Ethernet.
> 
> Environment 2 hosts each:
> - 2 * Intel(R) Xeon(R) CPU E5-2690 v2
> - Intel 82599ES 10Gb Ethernet
> - 128GB RAM
> 
> System:
> - Centos 6.5 delivered by fuel 6.0
> 
> iperf during test of network performance over single stream report 2,5-3Gbps (when using 4+ connection, cumulative transfer can hit over 9Gbps)
> 
> For comparison, same test was run on official Centos 6.5 with result at minimum 9,3 Gbps
> 
> In both cases default MTU 1500 was set.
> 
> From my analyses it looks like something is limiting i/o performance per stream.
> 
> Are you aware of this issue, and can you comment on it?
> 
> This is critical for our deployment.

How this was measured? VM to VM? Compute to compute? In any case, what is your deployment configuration, especially VLAND or GRE, networking gear, etc.

Regards,
-- 
Tomasz 'Zen' Napierala
Sr. OpenStack Engineer
tnapierala at mirantis.com