2011/12/30 Jérémie Koenig <j...@jk.fr.eu.org> > On Thu, Dec 29, 2011 at 1:25 AM, Samuel Thibault > <samuel.thiba...@gnu.org> wrote: > > [...], but I believe it's still a bit revealing: I had already noticed > > that ext2fs spends most of its time in the kernel (like 90%), and it > > here seems we're spending a lot of time just managing the ext2fs thread > > sleeps (no, there aren't many threads in that test, just two dozen). > > Could thread migration [1] maybe help with this? > > [1] > http://www.brynosaurus.com/pub/os/thread-migrate.pd<http://www.brynosaurus.com/pub/os/thread-migrate.pdf> > f
One reason we didn't worry about these context switches was because migrating threads was going to be in the mainline Mach RSN. Thomas
