RE: speedup build time

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-----
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> =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.