Re: [REGRESSION] [BISECTED] kswapd high CPU usage

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Kirill A. Shutemov <kirill <at> shutemov.name> writes:

> 
> On Sat, Jan 23, 2016 at 03:57:21PM +0000, Hugh Greenberg wrote:
> > Kirill A. Shutemov <kirill <at> shutemov.name> writes:
> > > 
> > > Could you try to insert 
"late_initcall(set_recommended_min_free_kbytes);"
> > > back and check if makes any difference.
> > > 
> > 
> > We tested adding late_initcall(set_recommended_min_free_kbytes); 
> > back in 4.1.14 and it made a huge difference. We aren't sure if the
> > issue is 100% fixed, but it could be. We will keep testing it.
> 
> It would be nice to have values of min_free_kbytes before and after
> set_recommended_min_free_kbytes() in your configuration.
> 

We'll try to get this for you. 

The reports are coming from 2GB Haswell chromebooks. I have a 4GB haswell 
chromebook and I cannot reproduce the issue, even if I boot the kernel with 
2GB or less.

After more testing, we were still able to reproduce the issue. It seems to 
have taken longer to show up this time.

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