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Re: [Xen-API] qos_algorithm_type=ratelimit

  • To: Matthew Spah <spahmatthew@xxxxxxxxx>
  • From: Rob Hoes <Rob.Hoes@xxxxxxxxxx>
  • Date: Mon, 14 Jan 2013 13:57:02 +0000
  • Accept-language: en-US
  • Acceptlanguage: en-US
  • Cc: "xen-api@xxxxxxxxxxxxx" <xen-api@xxxxxxxxxxxxx>
  • Delivery-date: Mon, 14 Jan 2013 13:57:21 +0000
  • List-id: User and development list for XCP and XAPI <xen-api.lists.xen.org>
  • Thread-index: Ac3yXwep8gmdHBCnT92yUooFhC8BDw==
  • Thread-topic: [Xen-API] qos_algorithm_type=ratelimit

Hi Matthew,

After setting those parameters, you probably need to re-plug the VIFs (unplug + plug), or reboot the VMs, for the setting to take effect. You can check if the "rate" key in xenstore is set (xenstore-ls -f | grep rate) to confirm.


On 13 Jan 2013, at 23:55, Matthew Spah <spahmatthew@xxxxxxxxx> wrote:

Hey everyone,

I'm currently testing and documenting the qos parameters for VIF interfaces. I've set up two VMs with VIF interfaces attached to an internal network. I've set the following qos parameters on each VIF interface.

xe vif-param-set uuid=<VIF UUID> qos_algorithm_type=ratelimit
xe vif-param-set uuid=<VIF UUID> qos_algorithm_params:kbps=100
iperf is showing me bandwidth rates between the two VMS that aren't limited to 100 kbps. Am I missing something? 

- Matthew Spah
Computer Information Sciences Tutor for Everett Community College
Electronic Monitoring Jr. Systems Engineer for Ocean Systems Inc
Xenapi Admin Project Member http://xenapiadmin.com
CompTIA Security+ Certified and Cisco CCNA Certified
Arlington, WA Cell 425-319-8676

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