From nobody Thu Nov 16 23:08:58 2023 X-Original-To: net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4SWbM55Fnqz51C5c; Thu, 16 Nov 2023 23:09:05 +0000 (UTC) (envelope-from tuexen@freebsd.org) Received: from drew.franken.de (drew.ipv6.franken.de [IPv6:2001:638:a02:a001:20e:cff:fe4a:feaa]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.franken.de", Issuer "Sectigo RSA Domain Validation Secure Server CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4SWbM44DD2z3CyP; Thu, 16 Nov 2023 23:09:04 +0000 (UTC) (envelope-from tuexen@freebsd.org) Authentication-Results: mx1.freebsd.org; none Received: from smtpclient.apple (unknown [IPv6:2a02:8109:1140:c3d:69c4:8554:a779:b3aa]) (Authenticated sender: micmac) by mail-n.franken.de (Postfix) with ESMTPSA id 77270721E280D; Fri, 17 Nov 2023 00:08:59 +0100 (CET) Content-Type: text/plain; charset=us-ascii 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 (Mac OS X Mail 16.0 \(3774.200.91.1.1\)) Subject: Re: Request for Testing: TCP RACK From: tuexen@freebsd.org In-Reply-To: <87pm09ykb8.wl-herbert@gojira.at> Date: Fri, 17 Nov 2023 00:08:58 +0100 Cc: current@freebsd.org, net@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: References: <42C327BD-6CE4-43AA-A1AE-3BEC08D623DB@freebsd.org> <87pm09ykb8.wl-herbert@gojira.at> To: "Herbert J. Skuhra" X-Mailer: Apple Mail (2.3774.200.91.1.1) X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00, T_SCC_BODY_TEXT_LINE autolearn=disabled version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on mail-n.franken.de X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:680, ipnet:2001:638::/32, country:DE] X-Rspamd-Queue-Id: 4SWbM44DD2z3CyP > On Nov 16, 2023, at 13:06, Herbert J. Skuhra = wrote: >=20 > Hi, >=20 > On Thu, 16 Nov 2023 10:13:05 +0100, tuexen@freebsd.org wrote: >>=20 >> Dear all, >>=20 >> recently the main branch was changed to build the TCP RACK stack >> which is a loadable kernel module, by default: >> = https://cgit.FreeBSD.org/src/commit/?id=3D3a338c534154164504005beb00a3c6fe= b03756cc >>=20 >> As discussed on the bi-weekly transport call, it would be great if = people >> could test the RACK stack for their workload. Please report any = problems to the >> net@ mailing list or open an issue in the bug tracker and drop me a = note via email. >> This includes regressions in CPU usage, regressions in performance or = any other >> unexpected change you observe. >>=20 >> You can load the kernel module using >> kldload tcp_rack >>=20 >> You can make the RACK stack the default stack using >> sysctl net.inet.tcp.functions_default=3Drack >>=20 >> Based on the feedback we get, the default stack might be switched to = the >> RACK stack. >>=20 >> Please let me know if you have any questions. >=20 > I am running main-n266450-a592812327de with a GENERIC-NODEBUG kernel. >=20 > # kldload tcp_rack > kldload: an error occurred while loading module tcp_rack. Please check > dmesg(8) for more details. >=20 > In dmesg: > KLD tcp_rack.ko: depends on tcphpts - not available or version = mismatch > linker_load_file: /boot/kernel/tcp_rack.ko - unsupported file type >=20 > So you have to build a kernel with "options TCPHPTS" first? Hi Herbert, yes this is correct. For whatever reason I was assuming the TCPHPTS is = already enabled in all configs, but this is not correct. Will put up an review to do this tomorrow. Thanks for reporting. Best regards Michael >=20 > -- > Herbert