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Sun, 17 Aug 2025 23:50:00 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 57HNo0m8072375 for net@FreeBSD.org; Sun, 17 Aug 2025 23:50:00 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 265714] igc(4) drops link under high traffic Date: Sun, 17 Aug 2025 23:50:00 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 13.1-STABLE X-Bugzilla-Keywords: IntelNetworking X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: karl@denninger.net X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D265714 karl@denninger.net changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |karl@denninger.net --- Comment #32 from karl@denninger.net --- I've got a little N-150 "minimal PC" box here with dual I226-v ports -- it comes up with 2.17 for the EEPROM. igc0: mem 0x80c00000-0x80cfffff,0x80d00000-0x80d03fff at device 0.0 on pci1 igc0: EEPROM V2.17-0 eTrack 0x80000303 igc0: Using 1024 TX descriptors and 1024 RX descriptors igc0: Using 4 RX queues 4 TX queues igc0: Using MSI-X interrupts with 5 vectors igc0: Ethernet address: c8:ff:bf:05:95:e2 igc0: netmap queues/slots: TX 4/1024, RX 4/1024 .... $ ifconfig igc0 igc0: flags=3D1008843 metr= ic 0 mtu 1500 =20=20=20=20=20=20=20 options=3D4e427bb ether c8:ff:bf:05:95:e2 inet 192.168.10.50 netmask 0xffffff00 broadcast 192.168.10.255 media: Ethernet autoselect (2500Base-T ) status: active nd6 options=3D29 If I turn off TSO and LRO (intended thing to do for the outside interface o= n a gateway/firewall) the only change is a slight increase in CPU use, as expec= ted. I've had zero trouble under 14.3-STABLE (built about a week ago) and I've hammered it pretty hard with iperf3 on 2.5Gbps connections.... zero hangs, drops or other misbehavior. The "other end" I'm testing against is a server on a 10GbE link through a Mellanox card (mce driver) into a switch with both 10G and 2.5G ports. (This is in contrast to a similar machine from a different vendor I have wi= th dual RealTek 2.5G ports that is unusably bad; random resets occur on the kernel-included driver under load and with the kmod driver some versions if= I dig through the older package sets sort of work but the "best" ones seem to= be "stable" but produce insane retry counts on iperf and very random-latency performance on real workloads.) I am not setting anything special (e.g. hw.pci.enable_aspm=3D0) or similar. --=20 You are receiving this mail because: You are the assignee for the bug.=