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Re: [Qemu-devel] [PATCH] memory: add -dont-dump-guest option to reduce c
From: |
Jason Baron |
Subject: |
Re: [Qemu-devel] [PATCH] memory: add -dont-dump-guest option to reduce core dump size |
Date: |
Mon, 21 May 2012 13:53:36 -0400 |
User-agent: |
Mutt/1.5.20 (2009-12-10) |
On Fri, May 04, 2012 at 05:23:51PM -0400, Jason Baron wrote:
> Add a command line parameter to not dump guest memory in the core dump, the
> command line is: -dont-dump-guest. This brought the core dump down from
> 383MB to 13 MB on a 1GB guest.
>
> Signed-off-by: Jason Baron <address@hidden>
> ---
> exec.c | 13 +++++++++++++
> osdep.h | 7 +++++++
> qemu-options.hx | 5 +++++
> sysemu.h | 1 +
> vl.c | 4 ++++
> 5 files changed, 30 insertions(+), 0 deletions(-)
>
Any thoughts on this? Is the guest memory often helpful in debugging
when the qemu process segfaults?
This feature also seems useful if somebody is running a sensitive
workload, such that the non-sensitive qemu state can be dumped
independently of the guest state. In that case, perhaps there should
also be an option that allows the guest to be dumped on a segfault, now
separately?
Thanks,
-Jason