Thanks for that Tim - interesting stuff! I realise my testing was far from
scientific so its good to see some real figures. I always build MusE in
release mode except when you guys ask for a BT.
Do you think it'd be possible to reduce MusE's RAM consumption without too
much trouble?
On Fri, Feb 5, 2016 at 8:26 PM, Tim E. Real <[email protected]> wrote:
> On February 4, 2016 08:02:17 AM Dan MacDonald wrote:
> > Why does MusE use so much RAM without having a session open?
> >
> > I just did a quick comparison of a few Linux-native DAW and how much RAM
> > they consume OOTB:
> >
> > qtractor ~23MB
> >
> > REAPER (Linux-native 5.1 'alpha' version) ~41MB
> >
> > MusE 3 ~330 MB
> >
> > I'd much rather see the MusE teams limited developer resources go toward
> > implementing new features and fixing bugs but it would be nice if MusE
> > could become more efficient with resources somewhere down the line too!
>
> Are you running a Debug or Release build?
> Should be big differences.
>
> Tested KDE System Monitor on 32-bit *buntu OS:
>
>
> Stock packaged QTractor fresh, blank start:
> ===========================
>
> Summary
>
> The process qtractor (with pid 3880) is using approximately 47.7 MB of
> memory.
> It is using 17.2 MB privately, and a further 93.8 MB that is, or could be,
> shared with other programs.
> Dividing up the shared memory between all the processes sharing that
> memory we
> get a reduced shared memory usage of 30.5 MB. Adding that to the private
> usage, we get the above mentioned total memory footprint of 47.7 MB.
> Library Usage
>
> The memory usage of a process is found by adding up the memory usage of
> each
> of its libraries, plus the process's own heap, stack and any other
> mappings,
> plus the stack of its 8 threads.
> Private
> hide
> 8512 KB [heap]
> 1236 KB /usr/lib/i386-linux-gnu/libQtGui.so.4.8.6
> 1200 KB /usr/bin/qtractor
> 700 KB /usr/lib/libkdeui.so.5.13.3
> 548 KB /usr/lib/libkdecore.so.5.13.3
> 488 KB /usr/lib/libkio.so.5.13.3
> 216 KB /usr/lib/i386-linux-gnu/libasound.so.2.0.0
> 200 KB /usr/share/fonts/truetype/ubuntu-font-family/Ubuntu-B.ttf
> 188 KB /usr/share/fonts/truetype/ubuntu-font-family/Ubuntu-R.ttf
> 184 KB /usr/lib/libsoprano.so.4.3.0
> 184 KB /usr/lib/i386-linux-gnu/libQtCore.so.4.8.6
> 152 KB /usr/lib/libsolid.so.4.13.3
> 148 KB /usr/lib/i386-linux-gnu/libicuuc.so.52.1
> 136 KB /usr/lib/i386-linux-gnu/libattica.so.0.4.2
> 132 KB /usr/lib/i386-linux-gnu/libfftw3.so.3.3.2
> 124 KB /usr/lib/i386-linux-gnu/libxml2.so.2.9.1
> 120 KB /usr/lib/i386-linux-gnu/libIlmImf.so.6.0.0
> ...
> ===========================
>
>
> MusE-3 Debug build (!) fresh, blank start,
> With -L -p -N -I -2 command-line switches (no plugins at all!) :
> ===========================
>
> Summary
>
> The process muse3 (with pid 3919) is using approximately 130.4 MB of
> memory.
> It is using 124.6 MB privately, and a further 89.1 MB that is, or could be,
> shared with other programs.
> Dividing up the shared memory between all the processes sharing that
> memory we
> get a reduced shared memory usage of 5.8 MB. Adding that to the private
> usage,
> we get the above mentioned total memory footprint of 130.4 MB.
> Library Usage
>
> The memory usage of a process is found by adding up the memory usage of
> each
> of its libraries, plus the process's own heap, stack and any other
> mappings,
> plus the stack of its 7 threads.
> Private
> hide
> 22924 KB /usr/lib/i386-linux-gnu/libicudata.so.52.1 <<<<< What?
> <<<<<
> 15812 KB [heap]
> 8268 KB [stack:3929]
> 8192 KB [stack:3935]
> 8192 KB [stack:3934]
> 8192 KB [stack:3920]
> 6280 KB /usr/lib/i386-linux-gnu/libQt5Widgets.so.5.2.1
> 5356 KB /usr/lib/i386-linux-gnu/dri/radeon_dri.so
> 4692 KB /usr/lib/i386-linux-gnu/libQt5Core.so.5.2.1
> 4444 KB /usr/lib/i386-linux-gnu/libQt5Gui.so.5.2.1
> 4208 KB /home/tim/muse3-20151228-github-
> debug/lib/muse-3.0/modules/libmuse_core.so
> 2304 KB /usr/lib/locale/locale-archive
> 1756 KB /usr/lib/i386-linux-gnu/libicui18n.so.52.1
> 1728 KB /home/tim/muse3-20151228-github-
> debug/lib/muse-3.0/modules/libmuse_widgets.so
> 1500 KB /usr/lib/i386-linux-gnu/libvorbisenc.so.2.0.8
> 1456 KB /usr/lib/i386-linux-gnu/libsamplerate.so.0.1.8
> 1204 KB /usr/lib/i386-linux-gnu/libicuuc.so.52.1
> 1048 KB /home/tim/muse3-20151228-github-
> debug/lib/muse-3.0/modules/libmuse_midiedit.so
> 916 KB /usr/lib/i386-linux-gnu/libasound.so.2.0.0
> 896 KB /lib/i386-linux-gnu/libc-2.19.so
> 876 KB /usr/lib/i386-linux-gnu/libX11.so.6.3.0
> 756 KB /home/tim/muse3-20151228-github-
> debug/lib/muse-3.0/modules/libmuse_icons.so
> 720 KB /usr/share/fonts/truetype/dejavu/DejaVuSans.ttf
> 676 KB /home/tim/muse3-20151228-github-
> debug/lib/muse-3.0/modules/libmuse_arranger.so
> 668 KB /usr/lib/i386-linux-gnu/qt5/plugins/platforms/libqxcb.so
> 640 KB /usr/share/fonts/truetype/dejavu/DejaVuSansCondensed-Bold.ttf
> 624 KB /lib/i386-linux-gnu/libglib-2.0.so.0.4002.0
> 544 KB /home/tim/muse3-20151228-github-
> debug/lib/muse-3.0/modules/libmuse_mixer.so
> ...
> ====================
>
>
> I had thought the size was because we load all discovered plugins
> into memory, but that doesn't seem to be the case since
> I disabled loading of plugins (unless it's still loading them?).
>
> Notice the big 23MB libicu thing:
> "ICU - International Components for Unicode."
> Not sure if it's because I'm building in debug mode,
> but it sure is a whopper!
>
> IIRC building MusE in Release mode should be smaller.
>
> Tim.
>
>
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