Re: [Xen-users] GPLPV network performance

["Fajar A. Nugraha" <fajar@xxxxxxxxx>]

Grant McWilliams wrote:
>
>
>     - Windows 2003 : 530 Mbps (this is the previous result)
>     - RHEL 5.2 (PV) : 2.7 Gbps
>
>
>
> I'm not sure where you've gotten those numbers from but I'm curious
> why I don't. I have two companies using Xen on CentOS 5.2 with CentOS
> 5.2 DomUs 
PV, right?

> and I'm getting the same numbers on both. DomU to Dom0 (or anywhere
> outside) is as fast as the hardware. 
Which is what? 1 Gbps?

> DomU to DomU runs about 450-500Mbits/sec. It's consistant so far. If I
> could get 2.7 Gbps I'd be happy as a clam but I haven't seen it.
>

>From what I can tell, network performance in domUs are mostly CPU-bound.
I'm using dual X5450@3GHz, disabled hyperthread, dom0 only uses one CPU
(CPU0), and both domUs are using different physical CPUs (one for each).
Are you perhaps using the same CPU for dom0 and domUs? Or maybe you're
using a newer Xen and enabled cpu_cap?

Regards,

Fajar

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