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Re: [Xen-API] [XCP-1.1] High OVS cpu load and unresponsive host network while VMPR archive phase is running


  • To: xen-api@xxxxxxxxxxxxxxxxxxx
  • From: Ben Pfaff <blp@xxxxxxxxxxxxxxx>
  • Date: Tue, 31 Jul 2012 09:08:18 -0700
  • Cancel-lock: sha1:VVfs8ab2JrLyQL0UVPPW5c6l+x4=
  • Delivery-date: Tue, 31 Jul 2012 16:09:09 +0000
  • List-id: User and development list for XCP and XAPI <xen-api.lists.xen.org>

Christian Fischer
<christian.fischer@xxxxxxxxxxxxxxxxxxx>
writes:

> We have no tagged vlans here, all physical switch ports running access mode.
> I wouldn't say that network load is increased when this happens, 15 kpps. 
> Network performance could be poor due either a vswitch issue (runs at 180% 
> CPU 
> load if the vswitch log don't lie) or high load on/cheep hardware of the 
> customer shared backup storage. I've never seen this stuff.

180% CPU load is impossible for OVS 1.0.1, which has only a
single procsss with a single thread.


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