Date: Sun, 10 Nov 1996 14:26:05 -0500 (EST) From: "John S. Dyson" <toor@dyson.iquest.net> To: current@freebsd.org Subject: Bad news: kind-of about page coloring Message-ID: <199611101926.OAA06336@dyson.iquest.net>
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As some of you know, I just got a PP motherboard (mostly to be able to work on SMP in the near future.) For now, I just have one processor, and have been studying it (in relation to FreeBSD.) As I kind-of expected due to the 4 way 2nd level cache on the PP, the page coloring code appears to be more of a hinderance than an advantage. I did find a significant improvement on the Pentium though. Just to let you know, I am going to make the coloring code work by setting itself up at runtime as opposed to compile time. The coloring code does have a liability of messing up our page caching stats (a little bit), but since the the PP cache is 4 way associative, we don't need the coloring nearly as much. So, IMO, coloring appears to be generally bad on the PPro. Johnhome | help
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