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Re: [lkp] [mm, page_alloc] d0164adc89: -100.0% fsmark.app_overhead

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Hi, Mel,

Mel Gorman <mgorman@techsingularity.net> writes:

> On Thu, Nov 26, 2015 at 08:56:12AM +0800, kernel test robot wrote:
>> FYI, we noticed the below changes on
>> 
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>> commit d0164adc89f6bb374d304ffcc375c6d2652fe67d ("mm, page_alloc:
>> distinguish between being unable to sleep, unwilling to sleep and
>> avoiding waking kswapd")
>> 
>> Note: the testing machine is a virtual machine with only 1G memory.
>> 
>
> I'm not actually seeing any problem here. Is this a positive report or
> am I missing something obvious?

Sorry the email subject is generated automatically and I forget to
change it to some meaningful stuff before sending out.  From the testing
result, we found the commit make the OOM possibility increased from 0%
to 100% on this machine with small memory.  I also added proc-vmstat
information data too to help diagnose it.

Best Regards,
Huang, Ying
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[lkp] [mm, page_alloc] d0164adc89: -100.0% fsmark.app_overhead kernel test robot <ying.huang@linux.intel.com> - 2015-11-26 02:00 +0100
  Re: [lkp] [mm, page_alloc] d0164adc89: -100.0% fsmark.app_overhead Mel Gorman <mgorman@techsingularity.net> - 2015-11-26 14:30 +0100
    Re: [lkp] [mm, page_alloc] d0164adc89: -100.0% fsmark.app_overhead Rik van Riel <riel@redhat.com> - 2015-11-26 16:10 +0100
    Re: [lkp] [mm, page_alloc] d0164adc89: -100.0% fsmark.app_overhead "Huang\, Ying" <ying.huang@linux.intel.com> - 2015-11-27 02:20 +0100
      Re: [lkp] [mm, page_alloc] d0164adc89: -100.0% fsmark.app_overhead Mel Gorman <mgorman@techsingularity.net> - 2015-11-27 11:10 +0100
        Re: [lkp] [mm, page_alloc] d0164adc89: -100.0% fsmark.app_overhead "Huang\, Ying" <ying.huang@linux.intel.com> - 2015-11-30 03:20 +0100
          Re: [lkp] [mm, page_alloc] d0164adc89: -100.0% fsmark.app_overhead Michal Hocko <mhocko@kernel.org> - 2015-11-30 14:10 +0100

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