Eric W. Biederman wrote:
> Matt Mackall <mpm@selenic.com> writes:
> 
>> As much as I like kexec, it loses on memory footprint by about 100x.
>> It's not appropriate for all use cases, especially things like
>> consumer-grade wireless access points and phones.
> 
> In general I agree.  The cost of a second kernel and initrd can be
> prohibitive in the smallest systems, and if you do a crash capture
> with using a standalone app that is reinventing the wheel.
> 
> That said.  I can happily run kdump with only 16M-20M reserved.
> So on many systems the cost is affordable.

Understood.  On some of my systems, the memory budget for the
entire system is 10M.  On most systems I work with, it is a
struggle to reserve even 64K for this feature.
  -- Tim

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Tim Bird
Architecture Group Chair, CE Linux Forum
Senior Staff Engineer, Sony Corporation of America
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