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xen-users
RE: [Xen-users] XCP bandwidth management
I have tested the bandwidth limiting in XCP and it does work, but only on
outbound traffic.
-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Alexandre
Bezroutchko
Sent: Sunday, May 22, 2011 3:40 PM
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] XCP bandwidth management
Hi,
> 1 - Limit the interface using the XenCenter GUI..
I believe in free version of XenServer bandwidth limiting does not work
(it silently does nothing), I doubt this feature is enabled in XCP, have
you tried?
I have patched /etc/xensource/scripts/vif script to (among other things)
call ovs-vsctl to set ingress policy rate. I imagine commercial edition
of XenServer do pretty much the same. Downside is that this approach
only limits traffic from VM. If you are billed for traffic your VMs
download from the Internet (like I am), this is not enough.
I've tried to play with 'tc' to limit traffic in another direction, but
it never worked properly -- I want to cap the rate to 10Mbps, but it
always gave me below 1Mbps whatever I do.
> 2 - Use sFlow in XCP to capture the data. Well this works for looking
> at how much bandwidth they are using, but I haven't found any existing
> tool that
> will act on that data to do traffic shaping.
I have tried this path too, but didn't go very far. What sFlow collector
are you using?
Best regards,
Alex Bezroutchko
http://www.gremwell.com/
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