Re: [PATCH v1 00/12] THP migration support

From	"Zi Yan" <zi.yan@sent.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v1 00/12] THP migration support
Date	2016-09-30 04:40 +0200
Message-ID	<smVTY-4fD-21@gated-at.bofh.it> (permalink)
References	<slG0V-5v6-3@gated-at.bofh.it> <slGaB-5yk-3@gated-at.bofh.it> <smET7-1C8-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

[Multipart message — attachments visible in raw view] - view raw

>
> Thanks for helping,

:)

>
> I think that you seem to do some testing with these patches on powerpc,
> which shows that thp migration can be enabled relatively easily for
> non-x86_64. This is a good news to me.

Right. I did some THP migration tests on both x86_64 and IBM ppc64.

You can use the code here to test the THP migration,
and compare the migration time between 512 base pages and 1 THP.
https://github.com/x-y-z/thp-migration-bench

NUMA (or fake NUMA) setup and libnuma are needed. Since it simply tries to
migrate pages from node 0 to node 1.

make bench should give you the result like:

THP Migration
Total time: 676.870346 us
Test successful.
-------------------
Base Page Migration
Total time: 2340.078354 us
Test successful.

>
> And I apology for my slow development over this patchset.
> My previous post was about 5 months ago, and I've not done ver.2 due to
> many interruptions. Someone also privately asked me about the progress
> of this work, so I promised ver.2 will be posted in a few weeks.
> Your patch 12/12 will come with it.

Looking forward to it. :)

—
Best Regards,
Yan Zi

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

[PATCH v1 00/12] mm: THP migration support zi.yan@sent.com - 2016-09-26 17:30 +0200
  [PATCH v1 04/12] mm: thp: enable thp migration in generic path zi.yan@sent.com - 2016-09-26 17:30 +0200
  [PATCH v1 05/12] mm: thp: check pmd migration entry in common path zi.yan@sent.com - 2016-09-26 17:30 +0200
  [PATCH v1 01/12] mm: mempolicy: add queue_pages_node_check() zi.yan@sent.com - 2016-09-26 17:30 +0200
  [PATCH v1 09/12] mm: mempolicy: mbind and migrate_pages support thp migration zi.yan@sent.com - 2016-09-26 17:30 +0200
  Re: [PATCH v1 00/12] THP migration support "Zi Yan" <zi.yan@sent.com> - 2016-09-26 17:40 +0200
    Re: [PATCH v1 00/12] THP migration support Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> - 2016-09-29 10:30 +0200
      Re: [PATCH v1 00/12] THP migration support "Zi Yan" <zi.yan@sent.com> - 2016-09-30 04:40 +0200

csiph-web