On Sat, Jan 21, 2012 at 06:28:33PM +0000, Måns Rullgård wrote: > Diego Biurrun <di...@biurrun.de> writes: > > On Fri, Jan 20, 2012 at 02:24:18PM -0800, Luca Barbato wrote: > >> On 20/01/12 13:49, Martin Storsjö wrote: > >> > On Fri, 20 Jan 2012, Luca Barbato wrote: > >> > > >> >> On 20/01/12 11:00, Martin Storsjö wrote: > >> >>> Originally, sizeof(struct MOVIentry) was 48, after the reordering, > >> >>> it is 40 in my build configuration. > >> >>> > >> >>> When writing really long mov/mp4 files, this can make a difference > >> >>> - this saves a bit over 2 MB of memory per hour of video (down to > >> >>> 10.3 MB per hour from 12.3 MB per hour initially) for a video with > >> >>> 75 packets per second - 25 fps + 50 audio packets (which is the > >> >>> case for AMR audio). > >> >>> --- > >> >> > >> >> Ok, I guess. Is there around something in dwarves to point structures > >> >> that could require less memory once reordered. > >> > > >> > Could you rephrase the second sentence - I don't really understand what > >> > it says. > >> > >> I was hurrying away... I meant that the dwarves tool should have a mean > >> to provide this information, if we want to try to brush away some memory. > > > > Go right ahead :) > > > > I remember that Mans once mentioned that the structures in the Vorbis > > decoder could benefit from tighter packing. > > That goes for a lot of structs.
So what does a poor uninitiated soul like myself have to read to know how to pack tightly or tighter and fix or improve such cases? Diego _______________________________________________ libav-devel mailing list libav-devel@libav.org https://lists.libav.org/mailman/listinfo/libav-devel
