Re: [E1000-devel] Bug report E1000 driver bonding in 802.3ad mode can not go beyond 1GB/s throughput

[Jay V. <fu...@us...>]

Support Team <su...@ca...> wrote:

>Yes, same VLAN setup in the software does not work for 82546 chip.  The
>setup in software are identical,
>other than 82546 load E1000 driver and 82573 load E1000E driver, nothing
>else changed in software or
>test environment.  If we can see 82546/MT adapter can get 2GB/s in bond
>mode, we will be happy.

	Some bonding things to check:

ip route show

	Make sure no interfaces (the slaves) have routes that supercede
the route for the bond itself.

cat /proc/net/bonding/bond0	[or whatever bond device you have]

	Make sure the options you think you have match what bonding is
seeing (particularly the xmit_hash_policy if your throughput test is
many connections but not many discrete peers).

	Also in the proc file, make sure the 802.3ad is aggregating
properly; are all of the slaves in the active aggregator?

	Lastly, what distro (cat /etc/issue) and kernel version are you
running (uname -a)?

	I fixed a bug in 802.3ad related to aggregator assignments a
couple of weeks ago.  If you've got a sufficiently recent kernel (the
bug was introduced late last year), you might be seeing that (if the
slaves don't aggregate properly).  I observed the bug messing up 802.3ad
aggregations with my e1000 devices, so it might be that.

	-J

---
	-Jay Vosburgh, IBM Linux Technology Center, fu...@us...