Josselin Mouette, le Mon 05 Jan 2009 00:47:02 +0100, a écrit : > There is probably a missing piece here. If you start several pigz > processes, the kernel only sees processes starting a lot of threads, and > processes only see a given number of cores. There is no interface that > allows a process to specify how to start more threads, giving the kernel > the opportunity to start them as it sees fit given the available number > of cores.
You mean Scheduler Activations? There's a patch against linux 2.4 ;) We're definitely diving into OS research :) More seriously, I wouldn't see the kernel being able to "start" threads, that's painful to maintain (that's why the LinuxActivations patch hasn't been maintained). I'd rather see a way for the process to dynamically know how many processors it can currently expect (something like a /proc, /sys, /dev or whatever fd with notification), and arrange things according to that (starting/stopping worker threads for instance). Samuel -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
