From nobody Fri Nov 26 18:48:44 2021 X-Original-To: freebsd-hackers@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 7331618AD821 for ; Fri, 26 Nov 2021 18:48:56 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: from mail-vk1-xa2f.google.com (mail-vk1-xa2f.google.com [IPv6:2607:f8b0:4864:20::a2f]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4J13gD1y4kz4RF1 for ; Fri, 26 Nov 2021 18:48:56 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: by mail-vk1-xa2f.google.com with SMTP id 84so6548064vkc.6 for ; Fri, 26 Nov 2021 10:48:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20210112.gappssmtp.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=OgezigoHCgZQRe6Lq8jiouVwU89twzL16YbjElU+Hhc=; b=7PC/4CkxFkfcVPQyN8zv+Q465l0wmCEz+euSeDHy6QaqHiGOlH+sWnoRjSfbiTBUIk 9HJg51Sa1dmB3wQJ94hUu2M48I6DceuFROxjjWu8aEd2Dg9urK54KuegMtt5BU7D0lHD lfezhu6B03CyQjK/7vygD3ENIAcmM5VNL4QxCE5ceQt2gVRpFLo8uv0PDDXU0OvTPjnx vUGPTFlqs06nqikN4+FyoO+24hNENCHCwVCY4kk4etCB1uZce1OwRgdqoKaGfdO7nWNB LH6Mww189OiC545ANbQyEBFSiUny2dPRJ4W4ECM9kXTHqk8ycXTniyb4ffBdaaiz5oWR qp5w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=OgezigoHCgZQRe6Lq8jiouVwU89twzL16YbjElU+Hhc=; b=p9kk+90kRxFhbA4lEVFgdWJbdirO++4pmmqnvRge4WRCJ/g2glO9m90muITLuF7EO+ 6D6c3VZA+65ftRZ9IxQ/dm5ZYcqApOYApubqsMHag5N66yKHJwu7m9oVPas7vzkPHY2E iaaUKL+4B/TaYk/+FmDrzqMyPufj9+II+8xFNkwV/tNKHL6oR6D/OZ6DP/bpEPWrWgok lcSJK3gWi0W6Pi096JnD5jpHZ+0JPEvaqqFnF3k5ukW8ISBO7wxH1ad64hqe2cterOXu iX12UGCU9lYo6wzb9myhcmLbYzR31/FAolazlAQxBGGb2TD/8+6ZyppXe2nEPdcJxxTH sBpw== X-Gm-Message-State: AOAM532Manb2DDgbq//fjq0GHDAVG1lwQrUGed13aygPi0X4UpvXo1rK n9jmuFhvqMoE76vyebFOe8ms5p9oddDXrt+I3Xm0QKVE81Fq4A== X-Google-Smtp-Source: ABdhPJxWungt3ZQUvzReB4TAhu//nxqUv4aI4AOYt/6luD/VsU85dJ6dW54bJ+XHS45skbmiGpaI3tggaHfZPe/GIBs= X-Received: by 2002:a1f:5c86:: with SMTP id q128mr16973685vkb.40.1637952535714; Fri, 26 Nov 2021 10:48:55 -0800 (PST) List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org MIME-Version: 1.0 References: <202111261818.1AQII0Ep077479@critter.freebsd.dk> <202111261824.1AQIOq0Y025804@gndrsh.dnsmgr.net> In-Reply-To: <202111261824.1AQIOq0Y025804@gndrsh.dnsmgr.net> From: Warner Losh Date: Fri, 26 Nov 2021 11:48:44 -0700 Message-ID: Subject: Re: Retiring WITHOUT_CXX To: "Rodney W. Grimes" Cc: Poul-Henning Kamp , Baptiste Daroussin , Ed Maste , FreeBSD Hackers Content-Type: multipart/alternative; boundary="0000000000000cf31e05d1b58be6" X-Rspamd-Queue-Id: 4J13gD1y4kz4RF1 X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[] X-ThisMailContainsUnwantedMimeParts: Y --0000000000000cf31e05d1b58be6 Content-Type: text/plain; charset="UTF-8" On Fri, Nov 26, 2021 at 11:26 AM Rodney W. Grimes < freebsd-rwg@gndrsh.dnsmgr.net> wrote: > > -------- > > Baptiste Daroussin writes: > On Fri, Nov 26, 2021 at 09:09:54AM -0800, > Rodney W. Grimes wrote: > > > > > > You can disagree with my assertion, but I shall continue to assert > > > > that it *seems* as if rather than adding B O S to the CI > > > > I dont know how long time B-O-S runs these days, it used to take > > a couple of weeks, and I have a hard time squaring that with any > > contemporary use of the "CI" paradigme :-) > > Dexter can provide an exact number, but IIRC on his purpose built > test box it is on the order of 2 or 3 days. > I can do a clean buildworld in about ~20-30 minutes on my fastest machine. There's ~300 build options which puts us at ~74 hours, or ~3 days. I've not done a build survey, though, to know for sure. Note that this doesn't do combinations, which is a combinatoric explosion in size (even doing all pairs would be 150x slower). Which is at least ~20x too slow to put into any pre-commit workflow, but would be suitable for periodic testing, perhaps. But then we need to ask if that ~75 hours of CPU time on a 128-thread CPU generates useful information in proportion to the size of the test... But it boils down to all things having a cost. And some costs are too great. Warner --0000000000000cf31e05d1b58be6--