Date: Wed, 23 Nov 2005 19:40:50 -0500 From: Kris Kennaway <kris@obsecurity.org> To: David Xu <davidxu@freebsd.org> Cc: current@FreeBSD.org, Kris Kennaway <kris@obsecurity.org> Subject: Re: 4BSD process starvation during I/O Message-ID: <20051124004050.GA11567@xor.obsecurity.org> In-Reply-To: <43850AB7.4000109@freebsd.org> References: <20051123201837.GA4822@xor.obsecurity.org> <438500BE.3020507@freebsd.org> <20051124000824.GA11032@xor.obsecurity.org> <43850AB7.4000109@freebsd.org>
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--G4iJoqBmSsgzjUCe Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Nov 24, 2005 at 08:35:03AM +0800, David Xu wrote: > Kris Kennaway wrote: >=20 > >On Thu, Nov 24, 2005 at 07:52:30AM +0800, David Xu wrote: > >=20 > > > >>Kris Kennaway wrote: > >> > >> =20 > >> > >>>Perhaps this can be tweaked. > >>> > >>>Kris > >>> > >>>P.S. Please, no responses about how maybe someone could write a new > >>>scheduler that doesn't have this property. > >>> > >>> > >>> > >>> > >>> =20 > >>> > >>Can you try it again with FULL_PREEMPTION is turned on ? > >> =20 > >> > > > >Didn't really make a difference: > > > >=20 > > > This might only can be fixed when msleep no longer explicitly fiddles > thread priority, let scheduler fully control it. OK, thanks for looking at it. Kris --G4iJoqBmSsgzjUCe Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDhQwSWry0BWjoQKURAnn6AKDzMMQodfA9r7duwyhm2wHFGbwVMwCgg7CQ h5octLmYlI2LIauhApQxbDg= =F5a+ -----END PGP SIGNATURE----- --G4iJoqBmSsgzjUCe--
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