Date: Sun, 29 Sep 1996 16:52:39 -0600 From: Steve Passe <smp@csn.net> To: ODA Kazutoshi <okaz@yggdrasil.forus.or.jp> Cc: FreeBSD-smp@freefall.freebsd.org Subject: Re: Tyan S1562D Tomcat2 Message-ID: <199609292252.QAA21480@clem.systemsix.com> In-Reply-To: Your message of "Mon, 30 Sep 1996 05:28:16 %2B0900." <199609292028.FAA29962@urd.yggdrasil.forus.or.jp>
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Hi, >> How much memory do you have in this machine? > > 32MBytes. Peter reports (NOT directly in reply to this mailing): ------------------------------------------------------------------------------ Well, based on what we now know about things that we don't do, I'm a little amazed that it's working as well as it seems to be in general. We are not doing TLB invalidation of other cpu's into account when modifying other processes page tables (which are possibly running on another cpu). This is a time-bomb that will affect low-memory or otherwise memory starved systems far worse than those that have plenty. (I run on 48M of ram and don't see it at all for days. I would expect 16M systems would be pretty bumpy.) ------------------------------------------------------------------------------ I have 64 meg and never see it. I suspect your getting hit by this problem. Unfortunately I don't have a solution. Anyone have a suggestion for "proving" this theory? -- Steve Passe | powered by smp@csn.net | FreeBSD
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