From nobody Thu Nov 16 09:13:05 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 4SWDpY5d35z51Ngf; Thu, 16 Nov 2023 09:13:09 +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 4SWDpY0l45z3gQw; Thu, 16 Nov 2023 09:13:09 +0000 (UTC) (envelope-from tuexen@freebsd.org) Authentication-Results: mx1.freebsd.org; dkim=none; spf=softfail (mx1.freebsd.org: 2001:638:a02:a001:20e:cff:fe4a:feaa is neither permitted nor denied by domain of tuexen@freebsd.org) smtp.mailfrom=tuexen@freebsd.org; dmarc=none Received: from smtpclient.apple (unknown [IPv6:2003:a:e03:d412:855f:9ce5:7233:4d51]) (Authenticated sender: micmac) by mail-n.franken.de (Postfix) with ESMTPSA id 5D5D3721E2817; Thu, 16 Nov 2023 10:13:06 +0100 (CET) From: tuexen@freebsd.org Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable 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: Request for Testing: TCP RACK Message-Id: <42C327BD-6CE4-43AA-A1AE-3BEC08D623DB@freebsd.org> Date: Thu, 16 Nov 2023 10:13:05 +0100 To: current@freebsd.org, net@freebsd.org 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-Result: default: False [-2.44 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.94)[-0.935]; MV_CASE(0.50)[]; MIME_GOOD(-0.10)[text/plain]; ONCE_RECEIVED(0.10)[]; TO_DN_NONE(0.00)[]; R_DKIM_NA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_ONE(0.00)[1]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_ALL(0.00)[]; ASN(0.00)[asn:680, ipnet:2001:638::/32, country:DE]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MLMMJ_DEST(0.00)[current@freebsd.org,net@freebsd.org]; RCPT_COUNT_TWO(0.00)[2]; R_SPF_SOFTFAIL(0.00)[~all:c]; DMARC_NA(0.00)[freebsd.org]; FROM_NO_DN(0.00)[]; FREEFALL_USER(0.00)[tuexen]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[] X-Rspamd-Queue-Id: 4SWDpY0l45z3gQw X-Spamd-Bar: -- Dear all, 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 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. You can load the kernel module using kldload tcp_rack You can make the RACK stack the default stack using sysctl net.inet.tcp.functions_default=3Drack Based on the feedback we get, the default stack might be switched to the RACK stack. Please let me know if you have any questions. Best regards Michael