Date: Wed, 14 Apr 2021 21:27:52 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 210901] em0 stores packets somewhere and lets them out slowly under load. Message-ID: <bug-210901-7501-OqHqptdqAK@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-210901-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-210901-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D210901 --- Comment #9 from dgilbert@eicat.ca --- to be clear, this didn't seem to be interrupt related at all. it was a resource starvation caused by memory fragmentation and the bone-headed way = we handle 9k jumbo frames. The whole problem would boil down to having a scar= ce few 9k jumbo frame buffers servicing all the packets coming in (and the few large ones going out). The system now has an mlxen driver card in it. Even more reason to prefer jumbo frames with 10GE, but, again... I haven't even bothered as it appeared that the jumbo frames were the issue, not the interrupts. So... it's very possible that this ticket should be closed --- but only if another regarding jumbo frames > 4k is opened. --=20 You are receiving this mail because: You are the assignee for the bug.=
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