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Re: [PATCH v2 0/5] mm: support parallel free of memory

From Aaron Lu <aaron.lu@intel.com>
Newsgroups linux.kernel
Subject Re: [PATCH v2 0/5] mm: support parallel free of memory
Date 2017-03-16 08:40 +0100
Message-ID <tlyaR-3mF-19@gated-at.bofh.it> (permalink)
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On Wed, Mar 15, 2017 at 05:28:43PM +0100, Michal Hocko wrote:
... ...
> After all the amount of the work to be done is the same we just risk
> more lock contentions, unexpected CPU usage etc.

I start to realize this is a good question.

I guess max_active=4 produced almost the best result(max_active=8 is
only slightly better) is due to the test box is a 4 node machine and
therefore, there are 4 zone->lock to contend(let's ignore those tiny
zones only available in node 0).

I'm going to test on a EP to see if max_active=2 will suffice to produce
a good enough result. If so, the proper default number should be the
number of nodes.

Thanks.

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[PATCH v2 0/5] mm: support parallel free of memory Aaron Lu <aaron.lu@intel.com> - 2017-03-15 10:10 +0100
  [PATCH v2 2/5] mm: parallel free pages Aaron Lu <aaron.lu@intel.com> - 2017-03-15 10:10 +0100
    Re: [PATCH v2 2/5] mm: parallel free pages "Hillf Danton" <hillf.zj@alibaba-inc.com> - 2017-03-15 10:50 +0100
      Re: [PATCH v2 2/5] mm: parallel free pages Aaron Lu <aaron.lu@intel.com> - 2017-03-15 13:00 +0100
  Re: [PATCH v2 0/5] mm: support parallel free of memory Michal Hocko <mhocko@kernel.org> - 2017-03-15 15:30 +0100
    Re: [PATCH v2 0/5] mm: support parallel free of memory Aaron Lu <aaron.lu@intel.com> - 2017-03-15 16:50 +0100
      Re: [PATCH v2 0/5] mm: support parallel free of memory Michal Hocko <mhocko@kernel.org> - 2017-03-15 17:30 +0100
        Re: [PATCH v2 0/5] mm: support parallel free of memory Tim Chen <tim.c.chen@linux.intel.com> - 2017-03-15 22:40 +0100
          Re: [PATCH v2 0/5] mm: support parallel free of memory Michal Hocko <mhocko@kernel.org> - 2017-03-16 10:10 +0100
            Re: [PATCH v2 0/5] mm: support parallel free of memory Tim Chen <tim.c.chen@linux.intel.com> - 2017-03-16 19:40 +0100
              Re: [PATCH v2 0/5] mm: support parallel free of memory Minchan Kim <minchan@kernel.org> - 2017-03-17 09:10 +0100
              Re: [PATCH v2 0/5] mm: support parallel free of memory Michal Hocko <mhocko@kernel.org> - 2017-03-17 09:30 +0100
                Re: [PATCH v2 0/5] mm: support parallel free of memory Aaron Lu <aaron.lu@intel.com> - 2017-03-17 13:40 +0100
                Re: [PATCH v2 0/5] mm: support parallel free of memory Michal Hocko <mhocko@kernel.org> - 2017-03-17 14:00 +0100
                Re: [PATCH v2 0/5] mm: support parallel free of memory Peter Zijlstra <peterz@infradead.org> - 2017-03-17 14:20 +0100
                Re: [PATCH v2 0/5] mm: support parallel free of memory Peter Zijlstra <peterz@infradead.org> - 2017-03-17 14:00 +0100
                Re: [PATCH v2 0/5] mm: support parallel free of memory Michal Hocko <mhocko@kernel.org> - 2017-03-17 14:30 +0100
            Re: [PATCH v2 0/5] mm: support parallel free of memory Dave Hansen <dave.hansen@intel.com> - 2017-03-21 16:10 +0100
              Re: [PATCH v2 0/5] mm: support parallel free of memory Aaron Lu <aaron.lu@intel.com> - 2017-03-22 09:20 +0100
              Re: [PATCH v2 0/5] mm: support parallel free of memory Aaron Lu <aaron.lu@intel.com> - 2017-03-24 08:10 +0100
            Re: [PATCH v2 0/5] mm: support parallel free of memory Tim Chen <tim.c.chen@linux.intel.com> - 2017-03-21 16:20 +0100
        Re: [PATCH v2 0/5] mm: support parallel free of memory Aaron Lu <aaron.lu@intel.com> - 2017-03-16 08:00 +0100
        Re: [PATCH v2 0/5] mm: support parallel free of memory Aaron Lu <aaron.lu@intel.com> - 2017-03-16 08:40 +0100
          Re: [PATCH v2 0/5] mm: support parallel free of memory Aaron Lu <aaron.lu@intel.com> - 2017-03-16 15:00 +0100
            Re: [PATCH v2 0/5] mm: support parallel free of memory Aaron Lu <aaron.lu@intel.com> - 2017-03-16 15:20 +0100
  Re: [PATCH v2 0/5] mm: support parallel free of memory Vlastimil Babka <vbabka@suse.cz> - 2017-03-15 16:00 +0100
    Re: [PATCH v2 0/5] mm: support parallel free of memory Aaron Lu <aaron.lu@intel.com> - 2017-03-15 17:00 +0100
    Re: [PATCH v2 0/5] mm: support parallel free of memory Aaron Lu <aaron.lu@intel.com> - 2017-03-17 04:20 +0100
  Re: [PATCH v2 0/5] mm: support parallel free of memory Aaron Lu <aaron.lu@intel.com> - 2017-03-17 03:30 +0100

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