RE: Extremely slow network with e1000 & ip_conntrack

Feldman, Scott
2003-12-04T06:51:58Z

> > > I compiled lots of kernels :-( and narrowed it down to between
> > > 2.5.26 and 2.5.46.
> > >
> > > Kernel version Chip Problem?
> > > 2.4.22 82540EM N
> > > 2.5.26 82540EM N
> > > 2.5.46 82540EM Y
> > > 2.6.0-test10 82540EM Y
> > > 2.6.0-test11 82540EM Y
> > > 2.6.0-test11 82547EI N
> > > 2.4.22nptlsmp 82547EI N

In e1000, check this out:

#ifdef NETIF_F_TSO
if((adapter->hw.mac_type >= e1000_82544) &&
(adapter->hw.mac_type != e1000_82547))
netdev->features |= NETIF_F_TSO;
#endif

Try turning off TSO by disabling this code or by using "ethtool -K tso
off" (need version 1.8).

-scott