Date: Wed, 17 Feb 1999 21:12:34 +0100 From: Tor.Egge@fast.no To: dillon@apollo.backplane.com Cc: hackers@FreeBSD.ORG Subject: Re: Problems in VM structure ? Message-ID: <199902172012.VAA22106@midten.fast.no> In-Reply-To: Your message of "Wed, 17 Feb 1999 11:31:12 -0800 (PST)" References: <199902171931.LAA10322@apollo.backplane.com>
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> Ach. > > So why isn't it panicing on boot? Why does the machine > destabilize and die later on with all sorts of problems? > Is it trying to use more page table entries then were allocated > for the kernel_map? Is the submap allocator broken? The numbers I gave for kva consumptions by zones etc. might not be completely accurate. Thus kernel_map might be sufficient large for boot. But kernel_map is used directly later (pipes, imgact_gzip, link_elf, resource lists, pmap_new_proc, ...), and one of those KVM consumers might have insufficient error handling when kernel_map no longer has sufficient contiguous free space. > Is there some test we can add to panic the machine at boot > time if KVM is over-reserved? You might give a warning (or panic) if kernel_map has less free space than some predefined limits (using kernel configuration parameters when calculating the limits). - Tor Egge To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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