Date: Sun, 18 Oct 2020 14:27:29 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 250436] Regression in 12.stable em driver Message-ID: <bug-250436-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D250436 Bug ID: 250436 Summary: Regression in 12.stable em driver Product: Base System Version: 12.1-STABLE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: chrysalis@chrysalisnet.org Created attachment 218861 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D218861&action= =3Dedit smokeping data Hi I upgraded a server using the em driver from 11-STABLE to 12-STABLE 2 days = ago. I had previously tried EM_MULTIQUEUE but it behaved badly so was operating = on single queue. Since the update I am getting latency spikes, confirmed even on LAN. I have smokeping graphs which show this if required, it was initially noticed by myself with lag in the ssh session which seems to come on for a couple of seconds and then disappears, but affects all traffic. I observed that in 12-STABLE multiqueue now seems to be enforced, on other drivers such as igb there is a boot time tunable. Is there a way to toggle multiqueue, or something else I can try to fix it, otherwise I am posting here a problem report. I did also find this PR but has been closed. https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D234570 Chris --=20 You are receiving this mail because: You are the assignee for the bug.=
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