Bug#400524: net-r8169-1.patch decrease realtek network performance on debian 2.6.18

[maximilian attems <maks@sternwelten.at>]

tags 400524 moreinfo
stop

hello,

On Sun, 26 Nov 2006, Huf wrote:

> 
> Package: linux-image-2.6.18-3-amd64
> Version: 2.6.18-6
> 
> 
> Hello,
> 
> I noticed that patching a vanilla kernel with debian patch
> net-r8169-1.patch decrease speed of my realtek network card
> (precise location of patch
> kernel-patches/all/2.6.18/debian/features/all/drivers/net-r8169-1.patch.bz2)
> 
> I first noticed problems trying to tune my network with 2.6.16 and
> 2.6.18 kernels. Making more tests i discovered speed problem with 2.6.18
> packages

i can't reproduce that.
could you try latest 2.6.19 rcX it should contain that patchset too.
if you can reproduce it there, please ping upstream on bugzilla.kernel.org
or on netdev.
 
> vanilla 2.6.16.29 and debian 2.6.17-2 		give me 650Mbps
> vanilla 2.6.18.3  				give me 650Mbps
> 
> debian 2.6.18-3   				give me 280Mbps
> vanilla 2.6.18.3 with net-r8169-1.patch applied give me 280Mbps
> 
> 
> (tests are done with iperf, both tcp and udp give similar results)
> 
> 
> to reproduce :
> - Build and install a vanilla 2.6.18.3 using config from debian package
> - make network tests --> 650Mbps
> - apply net-r8169-1.patch to network source
> - make modules, make modules_install
> - ifdown eth2, rmmmod r8169, modprobe r8169, ifup eth2
> - make network tests --> 280Mbps
> - To be sure, revert to original r8169 and re-test  --> 650Mpbs
> 
> 
> The machine is an Athlon64 with nforce430 chipset and realtek pci
> network card
> lspci -n  for realtek card : 01:06.0 0200: 10ec:8169 (rev 10)

thanks for your feedback.

-- 
maks