Messages in this thread | | | From | Bodo Eggert <> | Subject | Re: fastboot: unpacking initramfs faster | Date | Tue, 24 Mar 2009 23:11:56 +0100 |
| |
Andreas Robinson <andr345@gmail.com> wrote:
> I tried running the initramfs unpacking asynchronously (and earlier) but > ran into a curious problem: The parent thread stalled until > decompression was done. I don't know why - I made sure that the two > threads ran on different cores. Perhaps the parent was cache starved.
I could not stall my system by gzip</dev/urandom>/dev/null. Maybe you accidentally used vfork?
> I then looked at multithreaded decompression and found that neither gzip > files nor deflate streams provide enough information (eg block lengths) > to let you share the decompression among threads. > > It can be done of course, but obviously not without modifying file > formats and userspace tools. > > (Thoughts of snowballs and hell presented themselves at this point.)
Why not make a new set? http://7eggert.dyndns.org:8080/l/bgz.tar.gz
| |