Date: Sat, 12 Oct 2002 12:25:11 -0400 From: Hiten Pandya <hiten@angelica.unixdaemons.com> To: Terry Lambert <tlambert2@mindspring.com> Cc: Jeff Roberson <jroberson@chesapeake.net>, Jeff Roberson <jeff@FreeBSD.ORG>, arch@FreeBSD.ORG Subject: Re: Scheduler patch, ready for commit. Message-ID: <20021012122510.A13430@angelica.unixdaemons.com> In-Reply-To: <3DA537E4.274A3714@mindspring.com>; from tlambert2@mindspring.com on Thu, Oct 10, 2002 at 01:18:44AM -0700 References: <20021010022058.A23516-100000@mail.chesapeake.net> <3DA537E4.274A3714@mindspring.com>
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On Thu, Oct 10, 2002 at 01:18:44AM -0700, Terry Lambert wrote the words in effect of: > > Yes, I agree, this is an important next step. I'm thinking that the > > scheduler should indicate how much space is needed to the proc allocation > > code. This much extra space could be allocated, and a pointer to > > scheduler specific data could really be a pointer within that allocated > > structure. This way it might be near enough for processor caches to be > > effective. Clearly this needs more work. That is outside of the scope of > > the current patch though. > > [...] > You may actually want to look at the Solaris/SVR4 implementation, > which supports both scheduling classes as loadable modules, and > simultaneous multiple scheduler classes (SVID III(RT) and the > "fixed" scheduling class, used to improve interactive response of > the X server, as well as a batch scheduler, are included in the > defaults for both systems). FWIW, the Solaris Internals book discusses this topic of scheduler classes in detail, IIRC. It has been time since I touched the book. Cheers. -- Hiten Pandya http://www.unixdaemons.com/~hiten hiten@unixdaemons.com, hiten@uk.FreeBSD.org, hiten@softweyr.com PGP: http://pgp.mit.edu:11371/pks/lookup?search=Hiten+Pandya&op=index To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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