From owner-freebsd-net@freebsd.org Tue Nov 19 23:08:24 2019 Return-Path: Delivered-To: freebsd-net@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 16E521C0CFA for ; Tue, 19 Nov 2019 23:08:24 +0000 (UTC) (envelope-from list_freebsd@bluerosetech.com) Received: from echo.brtsvcs.net (echo.brtsvcs.net [208.111.40.118]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 47HhMC247Rz43sV for ; Tue, 19 Nov 2019 23:08:23 +0000 (UTC) (envelope-from list_freebsd@bluerosetech.com) Received: from chombo.houseloki.net (c-73-240-250-185.hsd1.or.comcast.net [73.240.250.185]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "chombo.houseloki.net", Issuer "brtsvcs.net CA" (verified OK)) by echo.brtsvcs.net (Postfix) with ESMTPS id 3455438D47 for ; Tue, 19 Nov 2019 23:07:55 +0000 (UTC) Received: from [IPv6:2601:1c2:1402:1770:6950:8969:122c:f74a] (unknown [IPv6:2601:1c2:1402:1770:6950:8969:122c:f74a]) by chombo.houseloki.net (Postfix) with ESMTPSA id C4C1B13437 for ; Tue, 19 Nov 2019 15:07:54 -0800 (PST) To: freebsd-net@freebsd.org From: Mel Pilgrim Subject: CenturyLink gigabit PPPoE/igb, are there still performance issues? Message-ID: Date: Tue, 19 Nov 2019 15:07:52 -0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 47HhMC247Rz43sV X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of list_freebsd@bluerosetech.com designates 208.111.40.118 as permitted sender) smtp.mailfrom=list_freebsd@bluerosetech.com X-Spamd-Result: default: False [-4.50 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+mx:relay3.brtsvcs.net]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; MIME_TRACE(0.00)[0:+]; PREVIOUSLY_DELIVERED(0.00)[freebsd-net@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; RCVD_COUNT_THREE(0.00)[3]; TO_DN_NONE(0.00)[]; DMARC_NA(0.00)[bluerosetech.com]; IP_SCORE(-3.20)[ip: (-8.06), ipnet: 208.111.40.0/24(-4.03), asn: 36236(-3.85), country: US(-0.05)]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; SUBJECT_ENDS_QUESTION(1.00)[]; ASN(0.00)[asn:36236, ipnet:208.111.40.0/24, country:US]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_TLS_ALL(0.00)[]; RECEIVED_SPAMHAUS_PBL(0.00)[185.250.240.73.khpj7ygk5idzvmvt5x4ziurxhy.zen.dq.spamhaus.net : 127.0.0.10] X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Nov 2019 23:08:24 -0000 I have CenturyLink GPON service, which uses PPPoE. I've read about the performance bottleneck with PPPoE over igb interfaces limiting throughput to only a few hundred Mbps unless run on fairly capable hardware. Caveat: the posts that discuss this issue are a few years old. The hardware I have is a Xeon E3-1245v6 with igb interfaces. That seems like it should be beefy enough to handle a gigabit of PPPoE. In testing, I get 800+ Mbps when connected though the router provided by CenturyLink, but only 350 Mbps when connected directly to the ONT. If I add an em-based NIC, will that work around the issue? Is a cxgbe-based NIC the better choice?