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Re: [Qemu-devel] post-copy is broken?
From: |
Li, Liang Z |
Subject: |
Re: [Qemu-devel] post-copy is broken? |
Date: |
Mon, 18 Apr 2016 09:50:03 +0000 |
> > > > I've run it directly, setting relevant QTEST_QEMU_BINARY.
> > >
> > > Interesting; it's failing reliably for me - but only with a
> > > reasonably freshly booted machine (so that the pages get THPd).
> >
> > The same here. Freshly booted machine with 64GiB ram. I've checked
> > /proc/vmstat: huge pages were allocated
>
> Thanks for testing.
>
> Damn; this is confusing now. I've got a RHEL7 box with 4.6.0-rc3 on where it
> works, and a fedora24 VM where it fails (the f24 VM is where I did the bisect
> so it works fine with the older kernel on the f24 userspace in that VM).
>
> So lets see:
> works: Kirill's (64GB machine)
> Dave's RHEL7 host (24GB RAM, dual xeon, RHEL7 userspace and kernel
> config)
> fails: Dave's f24 VM (4GB RAM, 4 vcpus VM on my laptop24 userspace and
> kernel config)
>
> So it's any of userspace, kernel config, machine hardware or hmm.
>
> My f24 box has transparent_hugepage_madvise, where my rhel7 has
> transparent_hugepage_always (but still works if I flip it to madvise at run
> time). I'll try and get the configs closer together.
>
> Liang Li: Can you run my test on your setup which fails the migrate and tell
> me what your userspace is?
>
> (If you've not built my test yet, you might find you need to add a :
> tests/postcopy-test$(EXESUF): tests/postcopy-test.o
>
> to the tests/Makefile)
>
Hi Dave,
How to build and run you test? I didn't do that before.
Thanks!
Liang
>
> Dave
> >
> > --
> > Kirill A. Shutemov
> --
> Dr. David Alan Gilbert / address@hidden / Manchester, UK
- Re: [Qemu-devel] post-copy is broken?, (continued)
- Re: [Qemu-devel] post-copy is broken?, Dr. David Alan Gilbert, 2016/04/13
- Re: [Qemu-devel] post-copy is broken?, Dr. David Alan Gilbert, 2016/04/13
- Re: [Qemu-devel] post-copy is broken?, Andrea Arcangeli, 2016/04/13
- Re: [Qemu-devel] post-copy is broken?, Dr. David Alan Gilbert, 2016/04/14
- Re: [Qemu-devel] post-copy is broken?, Dr. David Alan Gilbert, 2016/04/14
- Re: [Qemu-devel] post-copy is broken?, Andrea Arcangeli, 2016/04/14
- Re: [Qemu-devel] post-copy is broken?, Kirill A. Shutemov, 2016/04/15
- Re: [Qemu-devel] post-copy is broken?, Dr. David Alan Gilbert, 2016/04/15
- Re: [Qemu-devel] post-copy is broken?, Kirill A. Shutemov, 2016/04/15
- Re: [Qemu-devel] post-copy is broken?, Dr. David Alan Gilbert, 2016/04/15
- Re: [Qemu-devel] post-copy is broken?,
Li, Liang Z <=
- Re: [Qemu-devel] post-copy is broken?, Dr. David Alan Gilbert, 2016/04/18
- Re: [Qemu-devel] post-copy is broken?, Li, Liang Z, 2016/04/18
- Re: [Qemu-devel] post-copy is broken?, Dr. David Alan Gilbert, 2016/04/18
- Re: [Qemu-devel] post-copy is broken?, Li, Liang Z, 2016/04/18
- Re: [Qemu-devel] post-copy is broken?, Dr. David Alan Gilbert, 2016/04/18
- Re: [Qemu-devel] post-copy is broken?, Dr. David Alan Gilbert, 2016/04/18
- Re: [Qemu-devel] post-copy is broken?, Dr. David Alan Gilbert, 2016/04/20
- Re: [Qemu-devel] post-copy is broken?, Dr. David Alan Gilbert, 2016/04/21
- Re: [Qemu-devel] post-copy is broken?, Andrea Arcangeli, 2016/04/27
- Re: [Qemu-devel] post-copy is broken?, Li, Liang Z, 2016/04/27