Hi! On Wed, 2013-10-16 at 17:32:37 +0100, David Goodenough wrote: > xy may only use a tiny bit, but the combination of apt-get, dpkg and > xy seems to cause problems. Its not just BeagleBones, there are x86 > machines with just 64MB still on sale.
Ok, I went through the dpkg code, and have reduced a bit its memory usage (and line count too!), which will get included in 1.17.2. First, when loading the .list files, dpkg was slurping them into a non-freeing memory pool, and populating the file list structures from that, the problem is that all the shared files and directories were left allocated on the heap; now the code just allocates the paths that are non-duped. And second, for *each* non-shared file on the system it was wasting 9 pointers, which is pretty significant, more so when taking into account 64-bit pointers. For example on one of my 64-bit systems, with 220481 paths installed, I go from 62.8 MiB to 46.1 MiB max resident memory, a saving of 16.7 MiB. That should compensate a bit for the slight increase in memory usage from xz. Thanks, Guillem -- 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/20131018052957.ga27...@gaara.hadrons.org
