Date: Mon, 3 Dec 2001 02:55:37 +0100 From: Emiel Kollof <coolvibe@hackerheaven.org> To: David Xu <davidx@viasoft.com.cn> Cc: freebsd-current@FreeBSD.ORG Subject: Re: pmap_collect: collecting pv entries -- suggest increasing PMAP_SHPGPERPROC Message-ID: <20011203015528.4258F1CA3@router.hackerheaven.org> In-Reply-To: <3C0AD530.4020702@viasoft.com.cn> References: <20011202223743.569721CA3@router.hackerheaven.org> <3C0AD530.4020702@viasoft.com.cn>
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On Monday 03 December 2001 02:28, David Xu wrote: > This is strange, the problem would happen in heavy forked system which > have lots of pages > are shared between lots of process and most are commited to these > processes, this is a known > FreeBSD VM problem, the pv_entry are static allocated using vm_zone > with max limit set. > strange thing is it happens in booting time. Yup. This is not a heavily loaded system. I'm not doing an excessive amount of shared memory stuff as well, and I am not using sysctl tweaks that effect shared mem. The thing is completely default (well, almost, I bumped up NMBCLUSTERS and maxusers, and I trimmed the kernel config to excluse stuff my laptop simply doesn't have or will never have, like some NIC's and SCSI adapters). The machine is a desktop machine that runs KDE 2.2.2 (the testing tarballs, see freebsd.kde.org for more info) and actually nothing more. So that's actually why I posted it. It struck me as strange as well that this should appear, because I've never seen it before. Also tweaking other vm bits seems not good, since the VM really does a good job in balancing itself already. I shouldn't mess in something that already works. Cheers, Emiel -- Vail's Second Axiom: The amount of work to be done increases in proportion to the amount of work already completed. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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