[Scons-dev] scons daemon

[William Blevins]

No, I just wanted the profile from before the patch and after the patch on
the same code. Unless I misunderstood your output from last time, you only
supplied the information regarding the patched version correct?

V/R,
William

On Tue, Dec 29, 2015 at 11:25 PM, Schleimer, Ben via Scons-dev <
scons-dev at scons.org> wrote:

> Hi,
>
> > Try running with --debug=time
>
> Did you want to see all of the build output?
>
> Ben
>
>
>
>
> On Tuesday, December 29, 2015 2:57 PM, Bill Deegan <
> bill at baddogconsulting.com> wrote:
>
>
>
> Try running with --debug=time
>
> --debug=time
> Prints various time profiling information: the time spent executing each
> individual build command; the total build time (time SCons ran from
> beginning to end); the total time spent reading and executing SConscript
> files; the total time spent SCons itself spend running (that is, not
> counting reading and executing SConscript files); and both the total time
> spent executing all build commands and the elapsed wall-clock time spent
> executing those build commands. (When *scons* is executed without the -j
> option, the elapsed wall-clock time will typically be slightly longer than
> the total time spent executing all the build commands, due to the SCons
> processing that takes place in between executing each command. When
> *scons* is executed *with* the -j option, and your build configuration
> allows good parallelization, the elapsed wall-clock time should be
> significantly smaller than the total time spent executing all the build
> commands, since multiple build commands and intervening SCons processing
> should take place in parallel.)
> -Bill
>
>
> On Tue, Dec 29, 2015 at 2:47 PM, William Blevins <wblevins001 at gmail.com>
> wrote:
>
> I guess my point here was that I wanted to know where the time savings was
> happening since SCons does split out some process timings.
>
> I just wanted to see a regular build timing with and without your patch.
>
> V/R,
> William
>
> On Tue, Dec 29, 2015 at 7:07 PM, Schleimer, Ben via Scons-dev <
> scons-dev at scons.org> wrote:
>
> Hi William,
>
>
> >Can you give the time saving using --debug=time for -j1 and -j4?
> >
>
>    Sure,
>
> regular scons build (scons -jX --debug=time)
> a clean build with -j1 is:
> Total build time: 20.901390 seconds
> Total SConscript file execution time: 0.149543 seconds
> Total SCons execution time: 0.444850 seconds
> Total command execution time: 20.306997 seconds
>
>
> an incremental build with -j1 is:
> Total build time: 2.439754 seconds
> Total SConscript file execution time: 0.151794 seconds
> Total SCons execution time: 0.337350 seconds
> Total command execution time: 1.950610 seconds
>
>
> a clean build with -j4 is:
> Total build time: 7.158301 seconds
> Total SConscript file execution time: 0.153021 seconds
> Total SCons execution time: 0.107556 seconds
> Total command execution time: 6.897724 seconds
>
>
> an incremental build with -j4 is:
> Total build time: 2.368260 seconds
> Total SConscript file execution time: 0.151281 seconds
> Total SCons execution time: 0.183930 seconds
> Total command execution time: 2.033049 seconds
>
>
> interactive build (scons --interactive -jX --debug=time)
> a clean build with -j1:
> time to do a build = 19.983217001 sec
>
> an incremental build with -j1:
> time to do a build = 2.2111852169 sec
>
> a clean build with -j4:
> time to do a build = 6.93614792824 sec
>
> an incremental build with -j4:
> time to do a build = 2.17438697815 sec
>
>
> It's consistently 0.2 seconds faster with the interactive build.
> Not a huge amount but I'm not using that many SConscript files.
> (5 SConscript files and 2 SConstruct files)
>
>
>
> Cheers
>
> Ben
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