Date: Wed, 16 Apr 2003 22:18:17 -0400 (EDT) From: Jeff Roberson <jroberson@chesapeake.net> To: Julian Elischer <julian@elischer.org> Cc: freebsd-threads@freebsd.org Subject: Re: Patches for threads/scheduler abstraction. Message-ID: <20030416221535.B76635-100000@mail.chesapeake.net> In-Reply-To: <Pine.BSF.4.21.0304161800410.44009-100000@InterJet.elischer.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, 16 Apr 2003, Julian Elischer wrote: > > OK I will send them shortly. > > These patches are NOT CLEAN > by which I mean I have not done any tidying up yet. > > It is still in the "cat dragged this over the fence" state. > However it does compile cleanly with only four files knowing what a kse > is (Not counting ULE, I have not touched ULE yet) (and I would actualy > rather that you did.. you understand it better). > > !!!!!!I have not tried to RUN this yet!!!!!! > The files that know what a kse is are: > ref3# grep ksevar.h kern/* > kern/kern_switch.c:#include <sys/ksevar.h> > kern/kern_thread.c:#include <sys/ksevar.h> > kern/sched_4bsd.c:#include <sys/ksevar.h> > kern/sched_4bsd_kse.c:#include <sys/ksevar.h> > (note that kern_thr.c is not one of them) > > My plan is: > eventually, sched_4bsd.c will only do the original BSD > scheduling (except with threads instead of procsses) > i.e. unfair, but simple and easy to benchmark on non-threaded apps. > (or on threaded apps with no competing processes) > > sched_4bsd_kse.c will suck in the current contents of kern_switch.c > and the KSE'd version of sched_4bsd.c. > > this will act like the current 4bsd scheduler WITH KSEs > There is a better way to do this. If you would listen to my tiered approach you could end up with one copy of sched_4bsd and not two. The kse specific logic could just sit in kern_kse which would not tell sched_4bsd about threads until they owned the KSE. We could even do this without the kse structure as a go between. > switch.c will go away (unless you want it as part of ULE). > > kern_thread.c will forget all about KSEs > (but its not there yet). > > I'll send the patches in an hour or so.. > My wife's calling :-/ > > > > > > > > > > > > > > Julian > > > > > > > > > > >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20030416221535.B76635-100000>