Date: Thu, 9 Nov 2000 11:20:50 -0800 (PST) From: Matt Dillon <dillon@earth.backplane.com> To: Warner Losh <imp@village.org> Cc: arch@FreeBSD.ORG Subject: Re: Silly question Message-ID: <200011091920.eA9JKos10894@earth.backplane.com> References: <200011091906.eA9J6Ms10566@earth.backplane.com> <200011091903.MAA43016@harmony.village.org> <200011091911.MAA43086@harmony.village.org>
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:ps, top and all that seems to work with a compressed kernel (just
:tried it). When the system makes a crash dump, doesn't it just splat
:memory into the swap partition in a rather stupid way? I don't know
:about other programs, but I do know that top just uses kvm_open to get
:its kernel variable needs met.
:
:Warner
It sounds like it could be made to work. I don't think we should
do it by default because you'd still have to gunzip the kernel to
get anything useful out of it when working on crashdumps, but I can
see a definite use for a kernel config option to install a compressed
kernel. It's one of those things that would have mattered a few years
ago, but isn't much of an issue now and will be even less of one in
the future.
In fact, something I think would be even more useful to those of us
who debug crash dumps a lot would be to have a configuration option
to install a full debug kernel in / rather then a stripped kernel,
so the crash recovery code copies the full debug kernel into
/var/crash. If I forget to copy it manually my crash dumps become
useless (in regards to gdb'ing them) when I install new kernels.
-Matt
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