Date: Wed, 2 Apr 2003 13:58:17 +0200 From: Sheldon Hearn <sheldonh@starjuice.net> To: Bruce Evans <bde@zeta.org.au> Cc: current@freebsd.org Subject: Re: ULE nice behavior fixed. Message-ID: <20030402115816.GN725@starjuice.net> In-Reply-To: <20030402212503.N26453@gamplex.bde.org> References: <20030402015226.E64602-100000@mail.chesapeake.net> <20030402091300.GG725@starjuice.net> <20030402212503.N26453@gamplex.bde.org>
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On (2003/04/02 21:48), Bruce Evans wrote: > > Some of us have been waiting for that behaviour for a long time (long > > before you started working on ULE). > > Er, this is the normal behaviour in FreeBSD-3.0 through FreeBSD-4.8, > so you shouldn't have waited more than negative 4 years for it :-). > The strict implementation of this behaviour in these releases causes > priority inversion problems, but the problems apparently aren't very > important. The scaling of niceness was re-broken in -current about 3 > years ago to "fix" the priority inversion problems. I should have realized that "a long time" would mean different things to different people, with respect to HEAD. I remember being involved in a flamefest on this issue a few years back. You were involved too. :-) However, are you sure the "nice 20 only gets unwanted CPU" behaviour is actually what you get in RELENG_4 (as opposed to your heavily patched version)? Ciao, Sheldon.
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