linux-kernel - [RFC PATCH 0/4] Automatic NUMA balancing and PROT

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Sat,  7 Mar 2015 15:20:47 +0000
From:	Mel Gorman <mgorman@...e.de>
To:	Dave Chinner <david@...morbit.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Aneesh Kumar <aneesh.kumar@...ux.vnet.ibm.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux-MM <linux-mm@...ck.org>, xfs@....sgi.com,
	linuxppc-dev@...ts.ozlabs.org, Mel Gorman <mgorman@...e.de>
Subject: [RFC PATCH 0/4] Automatic NUMA balancing and PROT_NONE handling followup v2r8

Dave Chinner reported a problem due to excessive NUMA balancing activity
and bisected it. The first patch in this series corrects a major problem
that is unlikely to affect Dave but is still serious. Patch 2 is a minor
cleanup that was spotted while looking at scan rate control. Patch 3 is
minor and unlikely to make a difference but is still an inconsistentcy
between base and THP handling. Patch 4 is the important one, it slows
PTE scan updates if migrations are failing or throttled. Details of the
performance impact on local tests is included in the patch.

 include/linux/migrate.h |  5 -----
 include/linux/sched.h   |  9 +++++----
 kernel/sched/fair.c     |  8 ++++++--
 mm/huge_memory.c        |  8 +++++---
 mm/memory.c             |  3 ++-
 mm/migrate.c            | 20 --------------------
 6 files changed, 18 insertions(+), 35 deletions(-)

-- 
2.1.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/