Skip site navigation (1)Skip section navigation (2)
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>

next in thread | previous in thread | raw e-mail | index | archive | help
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



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?xzp67bg442t.fsf>