Date: 13 Dec 1998 13:30:18 +0100 From: Dag-Erling Smorgrav <des@flood.ping.uio.no> To: Henry Miller <hank@black-hole.com> Cc: Dag-Erling Smorgrav <des@flood.ping.uio.no>, Matt Dillon <dillon@FreeBSD.ORG>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/kern vfs_syscalls.c Message-ID: <xzp67bg442t.fsf@flood.ping.uio.no> In-Reply-To: Henry Miller's message of "Sat, 12 Dec 1998 23:33:15 -0600 (CST)" References: <Pine.BSF.3.96.981212232007.5817A-100000@daphne.bogus>
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Henry Miller <hank@black-hole.com> writes: > On 12 Dec 1998, Dag-Erling Smorgrav wrote: > > Speaking of kernel dumps, what happens to physical memory pages when > > they're not in use? Are they zeroed? If not, is it possible to add a > > kernel option that zeroes out unused pages, or fills them with a fixed > > pattern (e.g. f001f001 og deadbeef)? That would make kernel dumps more > > compressible... > Woah! When there is a kernel dump, something is wrong. I have seen (not > on freebsd, but on other systems) where memory marked free contained the > critical clue to why the dump occured. When a kernel dumps we cannot > assume that the flags marking memory as free are correct. You are reading to much into my posting. DES -- Dag-Erling Smorgrav - des@flood.ping.uio.no To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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