Date: Wed, 20 Nov 1996 14:50:04 -0600 From: Chris Csanady <ccsanady@friley216.res.iastate.edu> To: Peter Wemm <peter@spinner.dialix.com> Cc: Steve Passe <smp@csn.net>, freebsd-smp@freebsd.org Subject: Re: vm_page_alloc(ZERO): missing pages... Message-ID: <199611202050.OAA02373@friley216.res.iastate.edu> In-Reply-To: Your message of Thu, 21 Nov 1996 04:40:24 %2B0800. <199611202040.EAA12623@spinner.DIALix.COM>
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>Steve Passe wrote: >> Hi, >> >> > I'm not sure exactly what this means, but I get the following messages wit h >> > the current SMP kernel. This is with APIC_IO and APIC_LAZY defined.. >> > >> > vm_page_alloc(ZERO): missing pages on cache queue: 4 >> > vm_page_alloc(ZERO): missing pages on cache queue: 3 >> > vm_page_alloc(ZERO): missing pages on cache queue: 1 >> > vm_page_alloc(NORMAL): missing pages on cache queue: 1 >[..] >> Any vm experts out there who can give a generic description of this error, >> or what might cause it? > >Also, how much paging is taking place? We are not propagating TLB flushes >to all cpu's yet (needs APIC IPI's to work). A great deal of paging. I was running a benchmark (hint) which beats on the memory quite hard. VM as well. Besides being a wonderful benchmark, I also use it every now and then to try to break things. :) Are the lacking TLB flushes very harmful? How hard would this be to implement? Chris > >Cheers, >-Peter > >
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