❦ 10 septembre 2015 13:56 +0200, Lucas Nussbaum <lucas@debian.org> : >> > Dmesg output during the hangs: >> > [ 876.069592] e1000e 0000:00:19.0 eth0: Detected Hardware Unit Hang: >> >> You can try disabling some of the offloading functions: >> >> ethtool -K eth0 tso off gro off gso off lro off > > Yes, I saw that mentioned somewhere. But I haven't tried yet. And it's > not really a suitable long-term fix. :) > If that helps to understand the root issue, I can try that next week or > the week after (but the machine is in production now, so it's not that > easy). Whatever the result is, it's just a workaround. The "Detected Hardware Unit Hang" error is quite generic and I have never found a way to get a probable root cause. It depends on how much you need those offload features. Disabling them will reduce the performance but also will prevent a whole class of problems from happening (bugs or pacing-related). -- Must I hold a candle to my shames? -- William Shakespeare, "The Merchant of Venice"
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