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Re: [Qemu-devel] [PATCH] exec: silence hugetlbfs warning under qtest
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH] exec: silence hugetlbfs warning under qtest |
Date: |
Tue, 24 Nov 2015 17:29:16 +0200 |
On Tue, Nov 24, 2015 at 03:30:23PM +0100, Paolo Bonzini wrote:
>
>
> On 24/11/2015 15:25, Michael S. Tsirkin wrote:
> > I'm worried that things go slow and people don't have a way to find out
> > why, and documentation isn't the first place people look for when facing
> > a performance issue.
> >
> > At the moment we call MADV_HUGEPAGE unconditionally and unfortunately
> > there's no way to report it's not having the intended effect.
> >
> > Maybe we want a "don't enable hugepages" flag.
> > That could also have the effect of suppressing the warnings.
>
> THP is anyway slower than hugetlbfs. If people really want performance,
> they need to use hugetlbfs. For everything else I'd be surprised if
> they even notice.
>
> Paolo
If you want to post and merge a patch removing this warning completely,
and revert the original one, that's fine with me.
--
MST
- Re: [Qemu-devel] [PATCH] exec: silence hugetlbfs warning under qtest, (continued)
- Re: [Qemu-devel] [PATCH] exec: silence hugetlbfs warning under qtest, Marc-André Lureau, 2015/11/23
- Re: [Qemu-devel] [PATCH] exec: silence hugetlbfs warning under qtest, Daniel P. Berrange, 2015/11/23
- Re: [Qemu-devel] [PATCH] exec: silence hugetlbfs warning under qtest, Michael S. Tsirkin, 2015/11/24
- Re: [Qemu-devel] [PATCH] exec: silence hugetlbfs warning under qtest, Daniel P. Berrange, 2015/11/24
- Re: [Qemu-devel] [PATCH] exec: silence hugetlbfs warning under qtest, Michael S. Tsirkin, 2015/11/24
- Re: [Qemu-devel] [PATCH] exec: silence hugetlbfs warning under qtest, Daniel P. Berrange, 2015/11/24
- Re: [Qemu-devel] [PATCH] exec: silence hugetlbfs warning under qtest, Paolo Bonzini, 2015/11/24
- Re: [Qemu-devel] [PATCH] exec: silence hugetlbfs warning under qtest,
Michael S. Tsirkin <=
- Re: [Qemu-devel] [PATCH] exec: silence hugetlbfs warning under qtest, Markus Armbruster, 2015/11/24
- Re: [Qemu-devel] [PATCH] exec: silence hugetlbfs warning under qtest, Michael S. Tsirkin, 2015/11/24
[Qemu-devel] [PATCH 2/3] tests: re-enable vhost-user-test, marcandre . lureau, 2015/11/16