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Guaranteed CPU shares? [message #36885]

Mon, 27 July 2009 13:05

laotse
Messages: 35
Registered: December 2008

Member

I must admit that I've never had to hunt down particular performace straits before, so I'm very much a newbie on this.

I have an Asterisk running in a VE running on a Quad Core Node. Yesterday, I setup a kvm to test my changes to vzdump Wink

. In phases with high virtual network traffic, the VoIP Quality went down drastically.

The network traffic went from the kvm through a bridge into veth to the OpenVZ VE hosting the apt-proxy. So no physical network traffic.

The VoIP traffic runs from the phone through eth0 into the veth of the VE into Asterisk, which uses chan_capi on an active card to connect to ISDN. So the net CPU load would be transcoding VoIP to ulaw (or whatever chan_capi is fed with).

I'm actually not sure whether the bottleneck is in the firewall on the HW node, collisions in veth, etc. or if in the end the Asterisk VE does not get enough CPU.

Could anyone give me some idea, how to tackle down the issue?

Regards,
- lars.

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[Message index]

		Guaranteed CPU shares? By: laotse on Mon, 27 July 2009 13:05
		Re: Guaranteed CPU shares? By: spikeinin on Tue, 11 August 2009 11:53
		Re: Guaranteed CPU shares? By: laotse on Tue, 11 August 2009 21:25
		Re: Guaranteed CPU shares? By: maratrus on Thu, 13 August 2009 07:37
		Re: Guaranteed CPU shares? By: laotse on Mon, 17 August 2009 08:26

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