Date: Fri, 17 Nov 2023 00:12:35 +0100 From: tuexen@freebsd.org To: "Herbert J. Skuhra" <herbert@gojira.at> Cc: current@freebsd.org, net@freebsd.org Subject: Re: Request for Testing: TCP RACK Message-ID: <CDEBB35F-F8D2-46CB-A561-735E4D569748@freebsd.org> In-Reply-To: <87o7ftyhkp.wl-herbert@gojira.at> References: <42C327BD-6CE4-43AA-A1AE-3BEC08D623DB@freebsd.org> <87pm09ykb8.wl-herbert@gojira.at> <87o7ftyhkp.wl-herbert@gojira.at>
next in thread | previous in thread | raw e-mail | index | archive | help
> On Nov 16, 2023, at 14:05, Herbert J. Skuhra <herbert@gojira.at> wrote: > > On Thu, 16 Nov 2023 13:06:03 +0100, "Herbert J. Skuhra" wrote: >> >> Hi, >> >> On Thu, 16 Nov 2023 10:13:05 +0100, tuexen@freebsd.org wrote: >>> >>> 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=3a338c534154164504005beb00a3c6feb03756cc >>> >>> 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=rack >>> >>> 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. >> >> I am running main-n266450-a592812327de with a GENERIC-NODEBUG kernel. >> >> # kldload tcp_rack >> kldload: an error occurred while loading module tcp_rack. Please check >> dmesg(8) for more details. >> >> 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 >> >> So you have to build a kernel with "options TCPHPTS" first? > > OK, I am now running GENERIC-NODEBUG + "options TCPHPTS". > > After setting "sysctl net.inet.tcp.functions_default=rack" git no > longer works: > > # sysctl net.inet.tcp.functions_default=rack > $ git pull > client_loop: send disconnect: Broken pipe > fatal: the remote end hung up upon initial contact > # sysctl net.inet.tcp.functions_default=freebsd > $ git pull > Already up to date. Interesting. It works on my development system: tuexen@head:~/freebsd-src % sysctl net.inet.tcp.functions_default net.inet.tcp.functions_default: rack tuexen@head:~/freebsd-src % git pull Already up to date. tuexen@head:~/freebsd-src % Could you provide a .pcapng file covering the `git pull` command? Best regards Michael > > -- > Herbert
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CDEBB35F-F8D2-46CB-A561-735E4D569748>