On Mon, 2008-08-25 at 19:08 -0400, C. Scott Ananian 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. > > The python interpreter's "-O -O" option specifically addresses this; > it removes docstrings from the running image. This command-line > option is probably appropriate for use for the sugar shell to allow us > to preserve doc strings for interactive use and offline documentation, > while removing the memory penalty and any disincentive for developers > to properly document their APIs. > > Is anyone interested in changing the first line of > /usr/bin/sugar-shell to '#!/usr/bin/python2.5 -O -O' and measuring the > execution time / memory size savings attained? Bonus points if you > can quantify the NAND space / speed tradeoff involved in using .pyo > files, which are enabled by the first -O option, since by default we > are deleting .pyo files to save space. Are the memory/speed > improvements obtained with '-O -O' worth the cost? > --scott
Awesome!, didn't know of the `-O -O' option. Last time I checked with guppy/heapy we had 40+% of the shell reserved to strings. On top of the list were docstrings. I aspect doc strings to take the most of that 40%, not sure thought. riccardo _______________________________________________ Sugar mailing list [email protected] http://lists.laptop.org/listinfo/sugar
