Date: Thu, 16 Nov 2023 13:06:03 +0100 From: "Herbert J. Skuhra" <herbert@gojira.at> To: tuexen@freebsd.org Cc: current@freebsd.org, net@freebsd.org Subject: Re: Request for Testing: TCP RACK Message-ID: <87pm09ykb8.wl-herbert@gojira.at> In-Reply-To: <42C327BD-6CE4-43AA-A1AE-3BEC08D623DB@freebsd.org> References: <42C327BD-6CE4-43AA-A1AE-3BEC08D623DB@freebsd.org>
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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? -- Herbert
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