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SubjectRe: 5.1 kernel: khugepaged stuck at 100%
On Thu, May 16, 2019 at 10:27:50AM -0400, Justin Piszcz wrote:
> On Thu, May 16, 2019 at 10:17 AM Justin Piszcz <jpiszcz@lucidpixels.com> wrote:
> >
> > On Thu, May 16, 2019 at 10:14 AM Justin Piszcz <jpiszcz@lucidpixels.com> wrote:
> > >
> > > On Tue, May 14, 2019 at 9:16 AM Kirill A. Shutemov <kirill@shutemov.name> wrote:
> > >
> > > > Could you check what khugepaged doing?
> > > >
> > > > cat /proc/$(pidof khugepaged)/stack
> > >
> > > It is doing it again, 10:12am - 2019-05-16
> > >
> > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> > > 77 root 39 19 0 0 0 R 100.0 0.0 92:06.94 khugepaged
> > >
> > > Kernel: 5.1.2
> > >
> > > $ sudo cat /proc/$(pidof khugepaged)/stack
> > > [<0>] 0xffffffffffffffff
> > >
>
> As a workaround/in the meantime--I will add the following to lilo/grub:
> transparent_hugepage=never
>
> Justin

Cc'ing myself since i observe such a behaviour sometimes right after KVM
VM is launched. No luck with reproducing it on demand so far, though.

--
Best regards,
Oleksandr Natalenko (post-factum)
Senior Software Maintenance Engineer

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