On Thursday, 15. January 2015 07:25:32 Eric Dumazet wrote: > On Thu, 2015-01-15 at 15:58 +0100, Thomas Jarosch wrote: > > A colleague mentioned to me he saw the "Hardware Unit Hang" message > > every > > few days even running on kernel 3.4 (without your patch). Basically I'm > > testing now if that's still the case with 3.19-rc4+ or not. > > > > I'm all for fixing the root cause. I'm just interested if the e1000e > > hang can even be triggered when using a max frag page size of 4096. > > So far it transferred 751.6 GiB without a hiccup. > > You told it was forwarding setup. > > 1) What is the NIC receiving traffic. > 2) What happens if you disable GRO on it ?
one more interesting thing happened: On one production machine, again an Intel DH61CR board, the issue was triggered even with TSO disabled. My colleague tried to disable GRO + GSO on the e1000e adapter, too, though not on the other interfaces. It's strange the issue appears with TSO disabled, that worked for three other production level machines. We've emergency-installed the "4096" max frag page size workaround for now as fifty people were a bit unhappy without network access... :D Cheers, Thomas ------------------------------------------------------------------------------ New Year. New Location. New Benefits. New Data Center in Ashburn, VA. GigeNET is offering a free month of service with a new server in Ashburn. Choose from 2 high performing configs, both with 100TB of bandwidth. Higher redundancy.Lower latency.Increased capacity.Completely compliant. http://p.sf.net/sfu/gigenet _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
