Re: Performance problem using Intel X520-DA2

On 25.01.2012 14:18, Nikolay Denev wrote:
> On Jan 25, 2012, at 1:59 PM, Ivan Voras wrote:
>
> > On 24/01/2012 17:53, Marcin Markowski wrote:
> > > On 24.01.2012 14:22, Ivan Voras wrote:
> > > > > On Mon, Jan 23, 2012 at 12:20 PM, Marcin
> > > > > Markowski<[EMAIL PROTECTED]>wrote:
> > > >
> > > > > > (on 9.0 we can see also kernel thread named {ix0 que} using 100% 
> > > > > > CPU),
> > > >
> > > > > > hw.ixgbe.num_queues=16
> > > >
> > > > If there really are 16 hardware queues, shouldn't there be 16 
> > > > kernel
> > > > threads for queue processing?
> > >
> > > There are 16 threads, but only one of them consumes 100% CPU and 
> > > the others
> > > do not use more than 5% CPU:
> > >
> > > http://pastebin.com/BWDWh8kW
> >
> > You need Jack to confirm it but this looks like a serious problem / 
> > bottleneck. It just shouldn't be like that (if the test is exactly the 
> > same).
>
> Is this by any chance non-IP traffic (or encapsulated in some way).
> I remember similar thread :
>
> http://freebsd.1045724.n5.nabble.com/igb-ixgbe-RSS-RX-queues-for-non-IP-traffic-td4778961.html

Most of the traffic received by the interface is a TCP/UDP, but there 
is also a PPPoE (~2.5Gbps/s).
The whole is divided into a large number of VLANs (>500)

--
Marcin Markowski

_______________________________________________
[EMAIL PROTECTED] mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-performance
To unsubscribe, send any mail to "[EMAIL PROTECTED]"