From owner-freebsd-net@freebsd.org Wed Aug 21 15:52:52 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 293B8CC097 for ; Wed, 21 Aug 2019 15:52:52 +0000 (UTC) (envelope-from crapsh@monkeybrains.net) Received: from sfo.monkeybrains.net (sfo.monkeybrains.net [208.69.40.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.monkeybrains.net", Issuer "AlphaSSL CA - SHA256 - G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46DByB5r0xz46fX for ; Wed, 21 Aug 2019 15:52:50 +0000 (UTC) (envelope-from crapsh@monkeybrains.net) Received: from Rudys-iMac.local (148-64-102-151.PUBLIC.monkeybrains.net [148.64.102.151] (may be forged)) (authenticated bits=0) by sfo.monkeybrains.net (8.15.2/8.15.2) with ESMTPSA id x7LFqmTR006428 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO) for ; Wed, 21 Aug 2019 08:52:48 -0700 (PDT) (envelope-from crapsh@monkeybrains.net) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=monkeybrains.net; s=dkim; t=1566402768; bh=w6yzUwUSlpTDEWgXmAE08GNnR8/eroTwoCMz2t3kR5M=; h=Subject:To:References:From:Date:In-Reply-To; b=q+mWLr/VsEHkHHkI9lDVzhV0x53gjU/U/8l74Vptwsb4YuVmNhpbGtoGji59HSePB J4FnlgTIbCOWB5g8v1ZLc50k7TiVzZafUNORV1hKg+ktku52uhUY89KhCKlcHFHWr7 rHvd2wws5Z3jNBXzXj2jQTn2UeUhvSgDHU4ovp3c= X-Authentication-Warning: mail.monkeybrains.net: Host 148-64-102-151.PUBLIC.monkeybrains.net [148.64.102.151] (may be forged) claimed to be Rudys-iMac.local Subject: Re: packets per second tool for CLI - and question about checksum_errs To: freebsd-net@freebsd.org References: <380fff29-8df3-2671-69c3-ef47131aaf58@monkeybrains.net> <7d61f797-1674-8c4a-d303-1b057ddf309f@mm.st> From: Rudy Message-ID: <56df7dfb-e652-f493-a679-9801960a274a@monkeybrains.net> Date: Wed, 21 Aug 2019 08:52:48 -0700 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <7d61f797-1674-8c4a-d303-1b057ddf309f@mm.st> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-Virus-Scanned: clamav-milter 0.100.2 at mail.monkeybrains.net X-Virus-Status: Clean X-Rspamd-Queue-Id: 46DByB5r0xz46fX X-Spamd-Bar: ----- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=monkeybrains.net header.s=dkim header.b=q+mWLr/V; dmarc=pass (policy=none) header.from=monkeybrains.net; spf=pass (mx1.freebsd.org: domain of crapsh@monkeybrains.net designates 208.69.40.9 as permitted sender) smtp.mailfrom=crapsh@monkeybrains.net X-Spamd-Result: default: False [-5.72 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_SPF_ALLOW(0.00)[+ptr]; HAS_XAW(0.00)[]; TO_DN_NONE(0.00)[]; DKIM_TRACE(0.00)[monkeybrains.net:+]; DMARC_POLICY_ALLOW(0.00)[monkeybrains.net,none]; NEURAL_HAM_SHORT(-0.98)[-0.975,0]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; IP_SCORE(-1.75)[ipnet: 208.69.40.0/22(-4.81), asn: 32329(-3.90), country: US(-0.05)]; ASN(0.00)[asn:32329, ipnet:208.69.40.0/22, country:US]; MID_RHS_MATCH_FROM(0.00)[]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(0.00)[monkeybrains.net:s=dkim]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-net@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; DWL_DNSWL_LOW(-1.00)[monkeybrains.net.dwl.dnswl.org : 127.0.5.1]; BAD_REP_POLICIES(0.10)[]; URIBL_PBL(0.01)[calomel.org]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] 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: Wed, 21 Aug 2019 15:52:52 -0000 On 8/20/19 10:43 PM, moridin wrote: > systat -ifstat -pps Awesome, that was the command I needed for PPS.  Chalk it up to Another re-inventing the wheel! The script does spotlight Checksum Errors on the Intel ethernet ports - should I be concerned with those errors? #sysctl dev.ix. | grep checksum dev.ix.3.mac_stats.checksum_errs: 26 dev.ix.2.mac_stats.checksum_errs: 20844466 dev.ix.1.mac_stats.checksum_errs: 16621802 dev.ix.0.mac_stats.checksum_errs: 8562140 netstat -i" doesn't show any errors. I am reading up on tuning for a router here:  https://people.freebsd.org/~olivier/talks/2018_AsiaBSDCon_Tuning_FreeBSD_for_routing_and_firewalling-Paper.pdf and here:  https://calomel.org/freebsd_network_tuning.html Adding in " -tso4 -tso6 -lro" flags as well as adjusting the kern.random.harvest.mask - I keep hoping one of them will help with the +Checksum Errors, but I guess if the packets are bad getting to the box, then the errors are what they are: errors. Rudy