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SubjectRe: [PATCH] trim memory not covered by WB MTRRs


On Wed, 6 Jun 2007, Jesse Barnes wrote:

> On Wednesday, June 6, 2007 3:13 pm Justin Piszcz wrote:
>> On Wed, 6 Jun 2007, Jesse Barnes wrote:
>>> On Wednesday, June 6, 2007 3:03 pm Justin Piszcz wrote:
>>>> Mem: 8039620k total, 7936472k used, 103148k free, 708k
>>>> buffers Mem: 8039608k total, 969380k used, 7070228k free,
>>>> 1232k buffers
>>>>
>>>> I am curious, why does the patch != the mem=8832M?
>>>
>>> I'm not sure... can you post your e820 map from boot and the
>>> contents of /proc/mtrr? Maybe my patch is trimming off a few too
>>> many pages, or maybe 8832M isn't quite right and actually ends up
>>> leaving you with a few uncached pages.
>>>
>>> Jesse
>>
>> Unless you know of some other way I can capture the output, it only
>> starts showing the dmesg from [50..] onward.
>
> Did you boot the kernel with the 'debug' option? Maybe your dmesg
> buffer is too small (there's a config option for that iirc).
>
> Jesse
>

Nope, I booted with only netconsole= options. I have a lot of HW in the
box and I guess the buffer is too small. Not sure where to change it in
the kernel. Looking..
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