Re: khugepaged / firefox going wild in 3.18-rc

Norbert Preining
2014-11-07T13:07:42Z

Hi Vlastimil,

On Thu, 06 Nov 2014, Vlastimil Babka wrote:
> OK, one possibility is to do (it should apply cleanly)
> git revert e14c720efdd73c6d69cd8d07fa894bcd11fe1973

I am running with this reverted now, and I cannot reproduce the
khugepage going overboard anymore.

I tried hard since 2 days now, no chance to reproduce.
Before firefox or shotwell went into boom mode, but not now.
(For now!)

> > Again, as I mentioned, I don't have /proc/pid/stack for any "pid", is
> > this depending on some specific kerenl option?
>
> Ah I missed that. Should be CONFIG_STACKTRACE to enable that.

If you want, I can compile a "default" kernel without the above commit
reverted, and turn on STACKTRACE (I have turned it one for *all* future
kernels I compile ;-)

I also didn't try the patch you send me, just the revert from above.

Please let me know which other experiments you want to see.

Thanks