[PATCH] Display progress during getmemsize() so the kernel doesn't look like it hanged

Ed Maste emaste at freebsd.org
Fri Jan 16 21:56:26 UTC 2015


On 16 January 2015 at 10:02, Patrick Powell <papowell at astart.com> wrote:
> On 01/14/15 22:59, Allan Jude wrote:
>>
>> Glad to see this, thanks for doing the work Ravi. Also, I agree with jhb@,
>> we should disable the test by default in stable/10 (i think it is off by
>> default only for VMs currently).
>
>
> Please please do not disable memory tests by default.  If you do, when
> trying to boot from a CD/Memory Stick
> image on a system with bad memory (which would be found by the tests) then
> it gets quite difficult to find this
> problem.

The boot time "memory test" is not particularly valuable, especially
on contemporary amd64 hardware. While it won't have any false
positives, there are a huge number of failure modes it will not catch.
It also does not inform the user of "failure" -- it just removes that
memory from the kernel's map. It's really a test of memory presence,
not quality.


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