Hi I am also experiencing the same problem. What I have noticed is that this
only happens on hosts which act as masters and with vtun running.
>From a search I did in the net it seems to be some sort of a packet storm
>which utilizes the CPU hence dropping the units performance.
Even though this threat
http://marc.info/?l=keepalived-devel&m=114040573028656&w=2 claims to resolve
the issue I do not have the access to sourgeforge to see the mentioned script.
Hope that helps
Regards
Soteris
> Date: Sun, 22 Feb 2009 12:05:28 -0500
> From: [email protected]
> To: [email protected]
> Subject: Re: [Voyage-linux] Performance issue w/ALIX and 2 radios
> CC: [email protected]
>
> Sean,
>
> Thanks for the thoughts. While noise is possible, the radios are 5.2
> and 5.8 bands respectively and 5Ghz is non-overlapping as well so I
> wouldn't think the effect would be this dramatic. I've run 2 2.4GHz
> cards in a common box and did see some throughput effect but nothing
> like I've reported here. The cpu load doesn't go up much though the
> ksoftirqd does consume a fair number of cycles. I also wonder whether
> the board's design is a factor wrt to the minipci bus, hence the
> posting. Another possible explanation is the driver in handling the
> interrupts/dma transfers on the bus.
>
> I have a 3 ethernet port ALIX that I will test this on using only the
> wired interfaces to rule out/in anything to do with madwifi, hal,
> atheros chipset, etc.
>
> Edwin
>
> Sean wrote:
> > It could be radio noise in the box, even though you may be using different
> > channels.
> > It could also be cpu. What percentage does your cpu get up to in top while
> > running the tests? It would also be good to find out how much the minipci
> > backplane in the alix will support.
> >
> > Sean
> >
>
> --
> <=+=+=+==+=+=+==+=+=+=+=+=+=+=+=>
> Edwin Whitelaw, P.E.
> New River Valley Unwired, LLC
> 2200 Lonesome Dove Dr
> Christiansburg, VA 24073
> 540-239-0318
>
>
> _______________________________________________
> Voyage-linux mailing list
> [email protected]
> http://list.voyage.hk/mailman/listinfo/voyage-linux
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