On Sat, 12 Feb 2011, Philipp Kern wrote: > Do we have an idea how much more memory xz needs for decompression? I guess > it wouldn't be feasible to switch dpkg's default on package builds on those > architectures where we assume some more beefyness?
It depends on what compression level we use, this is in the manpage: The following table summarises the features of the presets: Preset DictSize CompCPU CompMem DecMem -0 256 KiB 0 3 MiB 1 MiB -1 1 MiB 1 9 MiB 2 MiB -2 2 MiB 2 17 MiB 3 MiB -3 4 MiB 3 32 MiB 5 MiB -4 4 MiB 4 48 MiB 5 MiB -5 8 MiB 5 94 MiB 9 MiB -6 8 MiB 6 94 MiB 9 MiB -7 16 MiB 6 186 MiB 17 MiB -8 32 MiB 6 370 MiB 33 MiB -9 64 MiB 6 674 MiB 65 MiB "DecMem" is the memory needed to decompress (i.e. install the package), "CompMem" is the memory needed to compress (i.e. create the package). I think we could use -6 on all architectures without much problem. It's also the default setting used by xz if you don't specify anything. > I'd imagine that our CD1s would also get more useful if we'd compress those > in any case. Yeah, it's those discussions about our CD1 that led me to push this forward again. Cheers, -- Raphaël Hertzog ◈ Debian Developer Follow my Debian News ▶ http://RaphaelHertzog.com (English) ▶ http://RaphaelHertzog.fr (Français) -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20110212160218.ge23...@rivendell.home.ouaza.com