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Mon, 14 Apr 2025 13:04:57 +0000 Subject: Re: [REGRESSION] e1000e heavy packet loss on Meteor Lake - 6.14.2 To: =?UTF-8?Q?Marek_Marczykowski-G=c3=b3recki?= CC: Jesse Brandeburg , Tony Nguyen , , , , , Sasha Levin References: From: "Lifshits, Vitaly" Message-ID: <50da66d0-fe66-0563-4d34-7bd2e25695a4@intel.com> Date: Mon, 14 Apr 2025 16:04:51 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 In-Reply-To: Content-Type: text/plain; charset="utf-8"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-ClientProxiedBy: TL0P290CA0003.ISRP290.PROD.OUTLOOK.COM (2603:1096:950:5::18) To MW4PR11MB5934.namprd11.prod.outlook.com (2603:10b6:303:189::7) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MW4PR11MB5934:EE_|SJ0PR11MB4782:EE_ X-MS-Office365-Filtering-Correlation-Id: 89881ee5-fb8a-48d3-20ca-08dd7b54f4d8 X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|376014; 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Can you try if disabling them make things better? > > >> Does your switch/link partner support flow control? if it is configurable >> can you try to enable it? > > It does support it. Enabling it makes things much worse... > >> Do you see any errors in dmesg related to the e1000e driver? > > Not really. > dmesg | grep 'e1000e\|ens7': > > [ 3.088489] e1000e: Intel(R) PRO/1000 Network Driver > [ 3.088512] e1000e: Copyright(c) 1999 - 2015 Intel Corporation. > [ 3.093256] e1000e 0000:00:07.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode > [ 3.343378] e1000e 0000:00:07.0 0000:00:07.0 (uninitialized): registered PHC clock > [ 3.718946] e1000e 0000:00:07.0 eth0: (PCI Express:2.5GT/s:Width x1) d4:93:90:3e:0d:bb > [ 3.718966] e1000e 0000:00:07.0 eth0: Intel(R) PRO/1000 Network Connection > [ 3.719101] e1000e 0000:00:07.0 eth0: MAC: 16, PHY: 12, PBA No: FFFFFF-0FF > [ 3.759444] e1000e 0000:00:07.0 ens7: renamed from eth0 > [ 8.632317] e1000e 0000:00:07.0 ens7: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None > [ 239.458205] e1000e 0000:00:07.0 ens7: NIC Link is Down > [ 242.485869] e1000e 0000:00:07.0 ens7: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx > > (you can also see a test with flow control above) > > > And also ethtool output if useful: > Settings for ens7: > Supported ports: [ TP ] > Supported link modes: 10baseT/Half 10baseT/Full > 100baseT/Half 100baseT/Full > 1000baseT/Full > Supported pause frame use: Symmetric Receive-only > Supports auto-negotiation: Yes > Supported FEC modes: Not reported > Advertised link modes: 10baseT/Half 10baseT/Full > 100baseT/Half 100baseT/Full > 1000baseT/Full > Advertised pause frame use: Symmetric Receive-only > Advertised auto-negotiation: Yes > Advertised FEC modes: Not reported > Link partner advertised link modes: 10baseT/Half 10baseT/Full > 100baseT/Half 100baseT/Full > 1000baseT/Full > Link partner advertised pause frame use: No > Link partner advertised auto-negotiation: Yes > Link partner advertised FEC modes: Not reported > Speed: 1000Mb/s > Duplex: Full > Auto-negotiation: on > Port: Twisted Pair > PHYAD: 1 > Transceiver: internal > MDI-X: on (auto) > Supports Wake-on: d > Wake-on: d > Current message level: 0x00000007 (7) > drv probe link > Link detected: yes > >