[sugar] Removing docstrings

[Tomeu Vizoso]

On Tue, Aug 26, 2008 at 1:08 AM, C. Scott Ananian <cscott at laptop.org> wrote:
> A previous message (can't find it now to respond to it, sorry)
> indicated that static docstrings were responsible for a significant
> amount of sugar's runtime memory requirements.

Some preliminary results:

After precompiling .py files into .pyo with -OO (.pyo files don't
contain docstrings):

...
  3.0 MiB + 277.5 KiB =   3.3
MiB	/usr/bin/python2.5/usr/sbin/olpc-update-query--auto-s10
  3.1 MiB + 311.0 KiB =   3.4
MiB	/usr/bin/python2.5-OO/usr/bin/sugar-shell-service
  4.0 MiB +  23.0 KiB =   4.0 MiB	oatc              /init
  4.7 MiB + 381.0 KiB =   5.1
MiB	/usr/bin/python2.5-OO/usr/bin/sugar-presence-service
  5.7 MiB + 480.5 KiB =   6.2
MiB	/usr/bin/python2.5-OO/usr/bin/datastore-service
 11.3 MiB +   2.1 MiB =  13.4 MiB	/usr/bin/python2.5-OO/usr/sbin/rainbow-daemon
 12.1 MiB +   2.8 MiB =  14.9
MiB	/usr/bin/python2.5-OO/usr/bin/sugar-activityjournalactivi
 23.6 MiB +   3.1 MiB =  26.7 MiB	/usr/bin/python2.5-OO/usr/bin/sugar-shell
---------------------------------
                        103.0 MiB
=================================

 Private  +   Shared  =  RAM used	Program

[olpc at xo-0C-D0-FF ~]$ free
             total       used       free     shared    buffers     cached
Mem:        235756     214576      21180          0          0      80040
-/+ buffers/cache:     134536     101220
Swap:            0          0          0


Normal build:

...
  3.3 MiB + 333.0 KiB =   3.6 MiB	python/usr/bin/sugar-shell-service
  4.0 MiB +  23.0 KiB =   4.0 MiB	oatc              /init
  5.1 MiB + 418.5 KiB =   5.5 MiB	python/usr/bin/sugar-presence-service
  6.3 MiB + 527.5 KiB =   6.8 MiB	python/usr/bin/datastore-service
 12.8 MiB +   2.1 MiB =  14.9 MiB	python/usr/sbin/rainbow-daemon
 12.5 MiB +   2.8 MiB =  15.3
MiB	python/usr/bin/sugar-activityjournalactivity.JournalActivi
 26.6 MiB +   3.0 MiB =  29.6 MiB	python/usr/bin/sugar-shell
---------------------------------
                        103.9 MiB
=================================

 Private  +   Shared  =  RAM used	Program

-bash-3.2# free
             total       used       free     shared    buffers     cached
Mem:        237756     210648      27108          0          0      99896
-/+ buffers/cache:     110752     127004
Swap:            0          0          0


Had to backport two patches for -OO to work:

https://bugzilla.redhat.com/show_bug.cgi?id=460334

As Scott wrote initially, we still need to dig a bit more in order to
see all the tradeoffs in play here.

Regards,

Tomeu