Date: Fri, 15 Sep 2006 16:09:53 +0200 From: Alexander Leidinger <Alexander@Leidinger.net> To: Michael Butler <imb@protected-networks.net> Cc: freebsd-current@freebsd.org Subject: Re: PQ_CACHESIZE now too small? Message-ID: <20060915160953.s9fij7r2so8cggkk@webmail.leidinger.net> In-Reply-To: <450AA6D4.3050009@protected-networks.net> References: <450AA6D4.3050009@protected-networks.net>
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Quoting Michael Butler <imb@protected-networks.net> (from Fri, 15 Sep =20 2006 09:12:52 -0400): > I note in /sys/vm/vm_page.h we have .. > > /* Backward compatibility for existing PQ_*CACHE config options. */ > #if !defined(PQ_CACHESIZE) > #if defined(PQ_HUGECACHE) > #define PQ_CACHESIZE 1024 If you post to current@, you should quote code from -current... while =20 the numbers are still the same, the corresponding code has switched to =20 auto-tuning at boot time instead from the the fixed tuning at compile =20 time you presented here. > .. given the ever-increasing availability of L2 cache (even my core duo > laptop has 2MB of unified cache between two cores), are these numbers > now too small? > > Alternatively, are these parameters subject to the laws of diminishing > returns? I was told there are other ways of doing the page coloring which don't =20 depend on such magic numbers which need to be reviewed from time to =20 time. Bye, Alexander. --=20 I'm sorry I missed. =09=09-- Squeaky Fromme http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID =3D B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID =3D 72077137
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