Display total build-time

[dileks]

After I have built a stage1-only LLVM-15.0.7 toolchain, I did a ThinLTO + PGO optimized (for Linux v6.2-rc4 x86_64-defconfig).

Is it possible to create a timestamp before and after the build to have a total build-time?

Here the durations for the single stages, kernel and tests:

$ egrep '== Building|LLVM build duration:|Testing Time|real' archives/dileks-llvm-toolchain-15.0.7-5-g2c432a3d6ea8-thinlto_pgo_optimized-KCFI/log_tc-build.txt 
522:== Building LLVM stage 1 ==
4425:LLVM build duration: 0:12:41 <--- Rebuild from ccache (stage1-only: LLVM build duration: 4:09:08)
4742:== Building LLVM stage 2 ==
8321:LLVM build duration: 3:11:17
8324:== Building PGO profiles ==
8339:== Building kernels (6.2.0-rc4) ==
8357:real       66m53.470s
8676:== Building LLVM stage 3 ==
12445:Testing Time: 139.26s
12473:Testing Time: 828.88s
12479:LLVM build duration: 11:58:59

Counting together should be approx. 16h30m.

Total time matches:

$ cat start-build.txt dileks     17856   17853  0 21:52 pts/1    00:00:00 python3 ./build-llvm.py --no-update --build-type Release -p clang;lld -t X86;BPF --clang-vendor dileks -B /home/dileks/src/llvm/build -I /opt/llvm --check-targets clang lld --lto thin --pgo kernel-defconfig -L /home/dileks/src/linux/git -D LLVM_PARALLEL_LINK_JOBS=1 --show-build-commands

$ ls -alth /opt/llvm/ | head -3
insgesamt 36K
drwxr-xr-x 2 dileks dileks 4,0K 21. Jan 14:27 bin
-rw-r--r-- 1 dileks dileks    2 21. Jan 14:27 gitignore

Thanks.

[nathanchance]

Sure, try out #222.

[dileks]

Thanks for the quick patch!

I have a marathon-session of approx. 24 hours with building LLVM-15.0.7 toolchain + Linux-6.2-rc5, so today not really in the mood to do any more builds.
I simply trust you.

Hmm, can I use it to check/see the total build-time of binutils-2.40?
build-binutils.py handles this, don't think so.

[nathanchance]

Hmm, can I use it to check/see the total build-time of binutils-2.40?

I have updated the pull request to include this as well, does not make sense to do it for one and not the other.

[dileks]

I applied your patch from [1].

Running:

dileks@iniza:~/src/llvm/git$ LANG=C LC_ALL=C ./build-binutils.py -t x86_64-linux-gnu

========================================
== Building x86_64-linux-gnu binutils ==
========================================
...
/home/dileks/src/llvm/git/binutils-2.40/missing: 81: makeinfo: not found
WARNING: 'makeinfo' is missing on your system.
         You should only need it if you modified a '.texi' file, or
         any other file indirectly affecting the aspect of the manual.
         You might want to install the Texinfo package:
         <http://www.gnu.org/software/texinfo/>
         The spurious makeinfo call might also be the consequence of
         using a buggy 'make' (AIX, DU, IRIX), in which case you might
         want to install GNU make:
         <http://www.gnu.org/software/make/>
make[2]: *** [Makefile:1795: doc/bfd.info] Error 127
make[1]: *** [Makefile:1955: info-recursive] Error 1
make: *** [Makefile:3076: all-bfd] Error 2
make: *** Waiting for unfinished jobs....

Installing makeinfo means install texinfo Debian package.

root# apt-get install -t unstable --no-install-recommends texinfo -y

+ii  libtext-unidecode-perl  1.30-3
+ii  tex-common              6.18
+ii  texinfo                 6.8-6+b1

Total packages size: 1.950 kB

XXX: Wishes: --no-docs option

With this fixed - again a build-error:

Traceback (most recent call last):
  File "/home/dileks/src/llvm/git/./build-binutils.py", line 376, in <module>
    main()
  File "/home/dileks/src/llvm/git/./build-binutils.py", line 372, in main
    print(f"\nTotal script duration: {utils.get_duration(script_start)}")
                                      ^^^^^^^^^^^^^^^^^^
AttributeError: module 'utils' has no attribute 'get_duration'

Anything I missed to install - python-whatever-ships-utils.get_duration Debian package?

[1] https://github.com/nathanchance/tc-build/commit/1a2705cffe4b41302fd5b3ad210e23f5531037ef.patch
[2] https://packages.debian.org/search?suite=default&section=all&arch=any&searchon=contents&keywords=makeinfo

[nathanchance]

XXX: Wishes: --no-docs option

Please file another issue and I can take a look at it.

Anything I missed to install - python-whatever-ships-utils.get_duration Debian package?

That is provided by the parent commit of that change. Please pull the entire request:

git pull origin pull/222/head

[dileks]

Aaargh...

LGTM:

Total script duration: 4m 11s

New issue: build-binutils.py: Do not build texinfo docs
#223