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Re: [Qemu-devel] qemu and transparent huge pages
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From: |
Michael Tokarev |
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Subject: |
Re: [Qemu-devel] qemu and transparent huge pages |
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Date: |
Wed, 15 Aug 2012 19:03:24 +0400 |
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User-agent: |
Mozilla/5.0 (X11; Linux i686 on x86_64; rv:10.0.5) Gecko/20120624 Icedove/10.0.5 |
On 15.08.2012 18:26, Avi Kivity wrote:
> On 08/15/2012 05:22 PM, Michael Tokarev wrote:
>
>>>
>>> Please provide extra info, like the setting of
>>> /sys/kernel/mm/transparent_hugepage/enabled.
>>
>> That was it - sort of. Default value here is enabled=madvise.
>> When setting it to always the effect finally started appearing,
>> so it is actually working.
>>
>> But can't qemu set MADV_HUGEPAGE flag too, so it works automatically?
>
> It can and should.
Something like the attached patch?
Thanks,
/mjt
0001-mark-large-vmalloc-areas-as-MADV_HUGEPAGE-and-allow-.patch
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