Hi Pekka,

On Friday 20 June 2008 15:12, Pekka Enberg wrote:
quoted text
> Hi Andrew,
>
> (Please don't trim the cc.)

Oh, my apologies. I'm not subscribed to the list, so I mailed only=20
to emails found on lkml web page with original top mail.

quoted text
> On Fri, Jun 20, 2008 at 9:37 AM, Andrew Savchenko=20
> <Bircoph@list.ru> wrote:=20
[...]
quoted text
> As I don't have the hardware, I would appreciate if you could
> test the following quilt tree:
>
> =20
> http://www.kernel.org/pub/linux/kernel/people/penberg/patches/ip
>g/2.6.26-rc6/
>
> [Note: in case you're not familiar with quilt, the patches need
> to be applied in the order specified by the quilt 'series' file
> included there.]

Thanks for the advice. I installed quilt on my system and applied=20
your patchset to 2.6.26-rc6 kernel tree.

quoted text
> You can enable 10KB jumbo frames either by passing:
>
>   ipg.jumbo=3D10k
>
> to the kernel command line or, alternatively, load the ipg
> module as follows:
>
>   modprobe ipg jumbo=3D10k
>
> You cannot enable or disable jumbo frame support once the module
> is loaded so if you want to try out different frame sizes, you
> first need to unload the module.

Ok, but in practice I need to reboot the system: 1) usually I=20
compile into the kernel all code related to frequently used=20
hardware. 2) This is a remote system, so reload of network module=20
which is in use will be quite tricky.

I tested it with both jumbo frames disabled (no options), and=20
enabled for 10k frames: ipg.jumbo=3D10k. It seems to work fine with=20
all acceptable MTUs (max MTU =3D=3D 10240).

Sincerely yours,
Andrew