On Tue, 04 Sep 2007, Patrick McHardy wrote:
> Bill Fink wrote:
> > On Sat, 1 Sep 2007, Jesper Dangaard Brouer wrote:
> >
> >>On Sat, 1 Sep 2007, Patrick McHardy wrote:
> >>>
> >>>It still won't work properly with TSO (TBF for example already drops
> >>>oversized packets during ->enqueue), but its a good cleanup anyway.
> >>
> >>Then lets call it a cleanup of the L2T macros. In the next step we will
> >>fix the different schedulers, to use the ability to lookup larger sized
> >>packets. (I did notice the TBF scheduler would drop oversized packets).
> >
> > Hmmm. I guess this is also why TBF doesn't seem to work with 9000 byte
> > jumbo frames.
> >
> > [EMAIL PROTECTED] ~]# tc qdisc add dev eth2 root tbf rate 2gbit buffer
> > 5000000 limit 18000
>
> Yes, you need to specify the MTU on the command line for
> jumbo frames.
Thanks! Works much better now, although it does slightly exceed
the specified rate.
[EMAIL PROTECTED] ~]# tc qdisc add dev eth2 root tbf rate 2gbit buffer 5000000
limit 18000 mtu 9000
[EMAIL PROTECTED] ~]# ./nuttcp-5.5.5 -w10m 192.168.88.14
2465.6729 MB / 10.08 sec = 2051.8241 Mbps 19 %TX 13 %RX
[EMAIL PROTECTED] ~]# ./nuttcp-5.5.5 -M1460 -w10m 192.168.88.14
2785.5000 MB / 10.00 sec = 2335.6569 Mbps 100 %TX 26 %RX
-Bill
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