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Date:      Mon, 28 Oct 2024 13:15:32 +0000
From:      Nuno Teixeira <eduardo@freebsd.org>
To:        Alexander Leidinger <Alexander@leidinger.net>
Cc:        Maku Bex <zagazaw2004@gmail.com>, David Wolfskill <david@catwhisker.org>,  freebsd-current@freebsd.org
Subject:   Re: speedup build time
Message-ID:  <CAFDf7UJb2yB3KcRgobSh9VMdNFHbNcNi3YPhB3HJrwnNT_pxXA@mail.gmail.com>
In-Reply-To: <192d2702590.2805.fa4b1493b064008fe79f0f905b8e5741@Leidinger.net>
References:  <012d01db28cc$5fc66ac0$1f534040$@gmail.com> <Zx7fqFzbjuCvZgaw@albert.catwhisker.org> <015001db28db$690b03c0$3b210b40$@gmail.com> <192d2702590.2805.fa4b1493b064008fe79f0f905b8e5741@Leidinger.net>

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[-- Attachment #1 --]
Hello,

In what way could WITHOUT_LLVM_ASSERTIONS speed up builds?

Thanks,

Alexander Leidinger <Alexander@leidinger.net> escreveu (segunda, 28/10/2024
à(s) 10:02):

> Hi,
>
> Try (add)
> src.conf:
> WITHOUT_CLEAN=YES
> WITH_MALLOC_PRODUCTION=YES
> WITHOUT_LLVM_ASSERTIONS=yes
>
> This may only give a result in subsequent builds, not on the first build
> or when a lot or something essential has changed.
>
> Note (just in case...) the make jobs number you use is not used for the
> world, only for ports. For the world/kernel build it's really the -j
> option.
>
> Bye,
> Alexander.
>
> --
> Send from a mobile device, please forgive brevity and misspellings.
>
> Am 28. Oktober 2024 02:50:38 schrieb "Maku Bex" <zagazaw2004@gmail.com>:
>
> Hi David,
>>
>> * What (if any) "max_jobs" (make's "-j" parameter) are you using? 16
>>
>> * For a 16T system, I expect I would start with a value of around 28.
>> Shouldn't this number be equal to $(nproc --all)?
>>
>> * Are you using make's "meta" mode?  I do. Yes.
>>
>> * Can you get more memory for that system? Yes, I can bump it to 32GB.
>> This is a Dell OptiPlex 7080 Micro, and not sure if it is worth upgrading
>> the other components.
>>
>> If your laptop can complete the builds in such a small amount of time,
>> then there's either something wrong with my machine or the config files.
>> Oh! The build just finished as I was typing this reply and...(not for the
>> weak hearts):
>>
>> --------------------------------------------------------------
>>
>>> World built in 32437 seconds, ncpu: 16
>>>>>
>>>> --------------------------------------------------------------
>>
>> Here are the contents of:
>>
>> make.conf:
>>
>> CPUTYPE?=icelake-client
>> CFLAGS= -O2 -pipe -march=${CPUTYPE}
>> #CXXFLAGS=${CFLAGS}
>> MACHINE_CPU+= avx512 avx2 avx sse42 sse41 ssse3 sse3 f16c
>> MAKE_JOBS_NUMBER= 16
>> BATCH=yes
>> WRKDIRPREFIX=/var/ports/tmp
>> CCACHE_DIR=/var/ccache/tmp
>>
>> OPTIONS_UNSET+= QT5 QT6 CUPS VESA SCFB TWM XCONSOLE XCLOCK GNOME KDE
>> EXAMPLES \
>>                 DEBUG ASPELL NLS DOCS
>>
>> -------------------------------------------------------------------------------
>> src-env.conf:
>>
>> WITH_META_MODE=yes
>> WITH_CCACHE_BUILD=yes
>> #WITH_DIRDEPS_BUILD=yes <<fails
>> #WITH_DIRDEPS_CACHE=yes <<fails
>>
>> WITHOUT_TALK=yes
>> WITHOUT_TELNET=yes
>> WITHOUT_TFTP=yes
>> WITHOUT_IPFILTER=yes
>> WITHOUT_IPFW=yes
>> WITHOUT_FLOPPY=yes
>> WITHOUT_GAMES=yes
>> WITHOUT_BLUETOOTH=yes
>> WITHOUT_EE=yes
>> WITHOUT_FREEBSD_UPDATE=yes
>> WITHOUT_GPIO=yes
>> WITHOUT_MAIL=yes
>> WITHOUT_TESTS=yes
>> WITHOUT_AMD=yes
>> WITHOUT_CLANG=yes
>> WITHOUT_DEBUG_FILES=yes
>> WITHOUT_EXAMPLES=yes
>> WITHOUT_HYPERV=yes
>>
>> Happy Hacking,
>>
>> -----BEGIN PGP PUBLIC KEY BLOCK-----
>>
>> mJMEZlPMfxMFK4EEACMEIwQA/hAHZ4KNJLw5eRl6DAOyzkuHQ7PaK2hTYLVIPoxC
>> sCe8lB/hzET5KxMW9GXgFgPaSP7Es+ul6ajyq8pr9DeGnXUAFymi7GoT1kLIqgrn
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>> SvGg1NHW2kzqAvFsG37flbwrGRu5fmTnS/LZ/oPzOCuwU6F+o1q0E7gLwFwnzD93
>> riKeabdd
>> =iCV+
>> -----END PGP PUBLIC KEY BLOCK-----
>>
>> -----Original Message-----
>> From: David Wolfskill <david@catwhisker.org>
>> Sent: Sunday, October 27, 2024 19:50
>> To: Maku Bex <zagazaw2004@gmail.com>
>> Cc: freebsd-current@freebsd.org
>> Subject: Re: speedup build time
>>
>> On Sun, Oct 27, 2024 at 07:00:17PM -0500, Maku Bex wrote:
>>
>>> ...
>>> I'm trying to figure out a way to decrease build time of -CURRENT
>>> and/or -STABLE but it is not working out that well.
>>> I've tried the following:
>>> * Tuning /etc/make.conf and /etc/src-env.conf based on their manpages
>>> (make.conf(5), make(1), src.conf(5)).
>>> * Removed certain options from GENERIC, which reduced the kernel build
>>> time significantly.
>>>
>>> Hardware specs:
>>> * I7-10700T 8C/16T @2.0GHz.
>>> * 16GB RAM.
>>> * 256GB NVMe.
>>>
>>> Currently, 'make buildworld' has been running for 7hrs and counting.
>>> Is there anything else I can do to speed up world build?
>>> ....
>>>
>>
>> First, some questions -- whether or not you wish to share the answers, I
>> believe that answering the questions (if only for yourself) may be
>> helpful:
>>
>> * What (if any) "max_jobs" (make's "-j" parameter) are you using?  For a
>>   16T system, I expect I would start with a value of around 28.
>>
>> * Are you using make's "meta" mode?  I do.
>>
>> * Can you get more memory for that system?
>>
>> Some context:  I am in the (definitely peculiar; perhaps unfortunate)
>> habit of "tracking" FreeBSD head and latest stable branch on a small
>> collection of machines ... daily.  One of those is the laptop that I use
>> for normal "desktop" stuff, as well as accessing all other machines on the
>> planet that I access.  (Oh: I also update ports daily, too -- though I let
>> my dedicated "build machine" handle chromium.)
>>
>> That laptop has 4C/8T & 32 GB RAM.  This morning, it took:
>>
>> * 17:46 for stable/14-n269310-bbd018d0aaaf ->
>> stable/14-n269315-b21c677ed28a
>>   (0:02 to update /usr/src; 17:44 to build; 0:00 to delete old libraries)
>>
>> * 24:03 for main-n273250-9d585fc395c3 -> main-n273270-cadb71e4b013
>>   (0:03 to update /usr/src; 23:59 to build; 0:01 to delete old libraries)
>>
>> * Updating ports (other than www/chromium) took 1:52.
>>
>> (Those times are "mm:ss" in case it wasn't obvious.)
>>
>> The above is fairly classic "sample size of 1" -- it's not necessarily
>> representative.  Folks who are "sufficiently interested" are welcome to
>> trawl through the logs at
>> https://www.catwhisker.org/~david/FreeBSD/history/ to get a rough idea
>> of how long it is before the "uname" output from a successful build is
>> logged; there is probably some correlation to build times.
>>
>> I also recently acquired a replacement "build machine": 64C/128T; 256 GB
>> RAM; a fistful of SATA SSDs (build/boot on one; the rest is a poudriere
>> play area in a zraid).  That's a wee bit faster than the laptop. :-)
>>
>> Peace,
>> david
>> --
>> David H. Wolfskill                              david@catwhisker.org
>> It has been said that history repeats itself. This is perhaps not quite
>> correct; it merely rhymes. -- Theodor Reik
>>
>> See https://www.catwhisker.org/~david/publickey.gpg for my public key.
>>
>
>

-- 
Nuno Teixeira
FreeBSD UNIX:  <eduardo@FreeBSD.org>   Web:  https://FreeBSD.org

[-- Attachment #2 --]
<div dir="ltr"><div>Hello,</div><div><br></div><div>In what way could WITHOUT_LLVM_ASSERTIONS speed up builds?</div><div><br></div><div>Thanks,<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Alexander Leidinger &lt;<a href="mailto:Alexander@leidinger.net">Alexander@leidinger.net</a>&gt; escreveu (segunda, 28/10/2024 à(s) 10:02):<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>

<div>
<div dir="auto">
<div dir="auto">Hi, </div><div dir="auto"><br></div><div dir="auto">Try (add)</div><div dir="auto">src.conf:</div><div dir="auto">WITHOUT_CLEAN=YES</div><div dir="auto">WITH_MALLOC_PRODUCTION=YES</div><div dir="auto">WITHOUT_LLVM_ASSERTIONS=yes</div><div dir="auto"><br></div><div dir="auto">This may only give a result in subsequent builds, not on the first build or when a lot or something essential has changed. </div><div dir="auto"><br></div><div dir="auto">Note (just in case...) the make jobs number you use is not used for the world, only for ports. For the world/kernel build it&#39;s really the -j option. </div><div dir="auto"><br></div><div dir="auto">Bye, </div><div dir="auto">Alexander. </div><div dir="auto"><br></div><div id="m_-6194457441490761199aqm-signature" dir="auto" style="color:black"><div dir="auto">-- </div><div dir="auto">Send from a mobile device, please forgive brevity and misspellings.</div></div><div dir="auto"><br></div>
<div id="m_-6194457441490761199aqm-original" style="color:black">
<div dir="auto">Am 28. Oktober 2024 02:50:38 schrieb &quot;Maku Bex&quot; &lt;<a href="mailto:zagazaw2004@gmail.com" target="_blank">zagazaw2004@gmail.com</a>&gt;:</div>
<div><br></div>
<blockquote type="cite" class="gmail_quote" style="margin:0px 0px 0px 0.75ex;border-left:1px solid rgb(128,128,128);padding-left:0.75ex">
<div dir="auto">Hi David,</div>
<div dir="auto"><br></div>
<div dir="auto">* What (if any) &quot;max_jobs&quot; (make&#39;s &quot;-j&quot; parameter) are you using? 16</div>
<div dir="auto"><br></div>
<div dir="auto">* For a 16T system, I expect I would start with a value of around 28. Shouldn&#39;t this number be equal to $(nproc --all)?</div>
<div dir="auto"><br></div>
<div dir="auto">* Are you using make&#39;s &quot;meta&quot; mode?  I do. Yes.</div>
<div dir="auto"><br></div>
<div dir="auto">* Can you get more memory for that system? Yes, I can bump it to 32GB. This is a Dell OptiPlex 7080 Micro, and not sure if it is worth upgrading the other components.</div>
<div dir="auto"><br></div>
<div dir="auto">If your laptop can complete the builds in such a small amount of time, then there&#39;s either something wrong with my machine or the config files. Oh! The build just finished as I was typing this reply and...(not for the weak hearts):</div>
<div dir="auto"><br></div>
<div dir="auto">--------------------------------------------------------------</div>
<blockquote type="cite" class="gmail_quote" style="margin:0px 0px 0px 0.75ex;border-left:1px solid rgb(0,153,204);padding-left:0.75ex">
<blockquote type="cite" class="gmail_quote" style="margin:0px 0px 0px 0.75ex;border-left:1px solid rgb(153,51,204);padding-left:0.75ex">
<blockquote type="cite" class="gmail_quote" style="margin:0px 0px 0px 0.75ex;border-left:1px solid rgb(102,153,0);padding-left:0.75ex">
<div dir="auto">World built in 32437 seconds, ncpu: 16</div>
</blockquote>
</blockquote>
</blockquote>
<div dir="auto">--------------------------------------------------------------  </div>
<div dir="auto"><br></div>
<div dir="auto">Here are the contents of:</div>
<div dir="auto"><br></div>
<div dir="auto">make.conf:</div>
<div dir="auto"><br></div>
<div dir="auto">CPUTYPE?=icelake-client</div>
<div dir="auto">CFLAGS= -O2 -pipe -march=${CPUTYPE}</div>
<div dir="auto">#CXXFLAGS=${CFLAGS}</div>
<div dir="auto">MACHINE_CPU+= avx512 avx2 avx sse42 sse41 ssse3 sse3 f16c</div>
<div dir="auto">MAKE_JOBS_NUMBER= 16</div>
<div dir="auto">BATCH=yes</div>
<div dir="auto">WRKDIRPREFIX=/var/ports/tmp</div>
<div dir="auto">CCACHE_DIR=/var/ccache/tmp</div>
<div dir="auto"><br></div>
<div dir="auto">OPTIONS_UNSET+= QT5 QT6 CUPS VESA SCFB TWM XCONSOLE XCLOCK GNOME KDE EXAMPLES \</div>
<div dir="auto">                DEBUG ASPELL NLS DOCS</div>
<div dir="auto">-------------------------------------------------------------------------------</div>
<div dir="auto">src-env.conf:</div>
<div dir="auto"><br></div>
<div dir="auto">WITH_META_MODE=yes</div>
<div dir="auto">WITH_CCACHE_BUILD=yes</div>
<div dir="auto">#WITH_DIRDEPS_BUILD=yes &lt;&lt;fails</div>
<div dir="auto">#WITH_DIRDEPS_CACHE=yes &lt;&lt;fails </div>
<div dir="auto"><br></div>
<div dir="auto">WITHOUT_TALK=yes</div>
<div dir="auto">WITHOUT_TELNET=yes</div>
<div dir="auto">WITHOUT_TFTP=yes</div>
<div dir="auto">WITHOUT_IPFILTER=yes</div>
<div dir="auto">WITHOUT_IPFW=yes</div>
<div dir="auto">WITHOUT_FLOPPY=yes</div>
<div dir="auto">WITHOUT_GAMES=yes</div>
<div dir="auto">WITHOUT_BLUETOOTH=yes</div>
<div dir="auto">WITHOUT_EE=yes</div>
<div dir="auto">WITHOUT_FREEBSD_UPDATE=yes</div>
<div dir="auto">WITHOUT_GPIO=yes</div>
<div dir="auto">WITHOUT_MAIL=yes</div>
<div dir="auto">WITHOUT_TESTS=yes</div>
<div dir="auto">WITHOUT_AMD=yes</div>
<div dir="auto">WITHOUT_CLANG=yes</div>
<div dir="auto">WITHOUT_DEBUG_FILES=yes</div>
<div dir="auto">WITHOUT_EXAMPLES=yes</div>
<div dir="auto">WITHOUT_HYPERV=yes</div>
<div dir="auto"><br></div>
<div dir="auto">Happy Hacking,</div>
<div dir="auto"><br></div>
<div dir="auto">-----BEGIN PGP PUBLIC KEY BLOCK-----</div>
<div dir="auto"><br></div>
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<div dir="auto">riKeabdd</div>
<div dir="auto">=iCV+</div>
<div dir="auto">-----END PGP PUBLIC KEY BLOCK-----</div>
<div dir="auto"><br></div>
<div dir="auto">-----Original Message-----</div>
<div dir="auto">From: David Wolfskill &lt;<a href="mailto:david@catwhisker.org" target="_blank">david@catwhisker.org</a>&gt; </div>
<div dir="auto">Sent: Sunday, October 27, 2024 19:50</div>
<div dir="auto">To: Maku Bex &lt;<a href="mailto:zagazaw2004@gmail.com" target="_blank">zagazaw2004@gmail.com</a>&gt;</div>
<div dir="auto">Cc: <a href="mailto:freebsd-current@freebsd.org" target="_blank">freebsd-current@freebsd.org</a></div>
<div dir="auto">Subject: Re: speedup build time</div>
<div dir="auto"><br></div>
<div dir="auto">On Sun, Oct 27, 2024 at 07:00:17PM -0500, Maku Bex wrote:</div>
<blockquote type="cite" class="gmail_quote" style="margin:0px 0px 0px 0.75ex;border-left:1px solid rgb(0,153,204);padding-left:0.75ex">
<div dir="auto">...</div>
<div dir="auto">I&#39;m trying to figure out a way to decrease build time of -CURRENT </div>
<div dir="auto">and/or -STABLE but it is not working out that well.</div>
<div dir="auto">I&#39;ve tried the following:</div>
<div dir="auto">*	Tuning /etc/make.conf and /etc/src-env.conf based on their manpages</div>
<div dir="auto">(make.conf(5), make(1), src.conf(5)).</div>
<div dir="auto">*	Removed certain options from GENERIC, which reduced the kernel build</div>
<div dir="auto">time significantly. </div>
<div dir="auto"><br></div>
<div dir="auto">Hardware specs:</div>
<div dir="auto">*	I7-10700T 8C/16T @2.0GHz.</div>
<div dir="auto">*	16GB RAM.</div>
<div dir="auto">*	256GB NVMe.</div>
<div dir="auto"><br></div>
<div dir="auto">Currently, &#39;make buildworld&#39; has been running for 7hrs and counting. </div>
<div dir="auto">Is there anything else I can do to speed up world build?</div>
<div dir="auto">....</div>
</blockquote>
<div dir="auto"><br></div>
<div dir="auto">First, some questions -- whether or not you wish to share the answers, I believe that answering the questions (if only for yourself) may be</div>
<div dir="auto">helpful:</div>
<div dir="auto"><br></div>
<div dir="auto">* What (if any) &quot;max_jobs&quot; (make&#39;s &quot;-j&quot; parameter) are you using?  For a</div>
<div dir="auto">  16T system, I expect I would start with a value of around 28.</div>
<div dir="auto"><br></div>
<div dir="auto">* Are you using make&#39;s &quot;meta&quot; mode?  I do.</div>
<div dir="auto"><br></div>
<div dir="auto">* Can you get more memory for that system?</div>
<div dir="auto"><br></div>
<div dir="auto">Some context:  I am in the (definitely peculiar; perhaps unfortunate) habit of &quot;tracking&quot; FreeBSD head and latest stable branch on a small collection of machines ... daily.  One of those is the laptop that I use for normal &quot;desktop&quot; stuff, as well as accessing all other machines on the planet that I access.  (Oh: I also update ports daily, too -- though I let my dedicated &quot;build machine&quot; handle chromium.)</div>
<div dir="auto"><br></div>
<div dir="auto">That laptop has 4C/8T &amp; 32 GB RAM.  This morning, it took:</div>
<div dir="auto"><br></div>
<div dir="auto">* 17:46 for stable/14-n269310-bbd018d0aaaf -&gt; stable/14-n269315-b21c677ed28a</div>
<div dir="auto">  (0:02 to update /usr/src; 17:44 to build; 0:00 to delete old libraries)</div>
<div dir="auto"><br></div>
<div dir="auto">* 24:03 for main-n273250-9d585fc395c3 -&gt; main-n273270-cadb71e4b013</div>
<div dir="auto">  (0:03 to update /usr/src; 23:59 to build; 0:01 to delete old libraries)</div>
<div dir="auto"><br></div>
<div dir="auto">* Updating ports (other than www/chromium) took 1:52.</div>
<div dir="auto"><br></div>
<div dir="auto">(Those times are &quot;mm:ss&quot; in case it wasn&#39;t obvious.)</div>
<div dir="auto"><br></div>
<div dir="auto">The above is fairly classic &quot;sample size of 1&quot; -- it&#39;s not necessarily representative.  Folks who are &quot;sufficiently interested&quot; are welcome to trawl through the logs at <a href="https://www.catwhisker.org/~david/FreeBSD/history/" target="_blank">https://www.catwhisker.org/~david/FreeBSD/history/</a>; to get a rough idea of how long it is before the &quot;uname&quot; output from a successful build is logged; there is probably some correlation to build times.</div>
<div dir="auto"><br></div>
<div dir="auto">I also recently acquired a replacement &quot;build machine&quot;: 64C/128T; 256 GB RAM; a fistful of SATA SSDs (build/boot on one; the rest is a poudriere play area in a zraid).  That&#39;s a wee bit faster than the laptop. :-)</div>
<div dir="auto"><br></div>
<div dir="auto">Peace,</div>
<div dir="auto">david</div>
<div dir="auto">-- </div>
<div dir="auto">David H. Wolfskill                              <a href="mailto:david@catwhisker.org" target="_blank">david@catwhisker.org</a></div>
<div dir="auto">It has been said that history repeats itself. This is perhaps not quite correct; it merely rhymes. -- Theodor Reik</div>
<div dir="auto"><br></div>
<div dir="auto">See <a href="https://www.catwhisker.org/~david/publickey.gpg" target="_blank">https://www.catwhisker.org/~david/publickey.gpg</a>; for my public key.</div>
</blockquote>
</div><div dir="auto"><br></div>
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</blockquote></div><br clear="all"><br><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><font color="#888888">Nuno Teixeira</font></div><div><div><font color="#888888">
FreeBSD UNIX:  &lt;eduardo@FreeBSD.org&gt;   Web:  <a href="https://FreeBSD.org" rel="noreferrer" target="_blank">https://FreeBSD.org</a><br></font></div></div></div></div>;
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