linux-kernel - Re: [PATCH 0/8] Re: [PATCH] Add per-process flag to control thp

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Message-ID: <20130816150453.GN26093@sgi.com>
Date:	Fri, 16 Aug 2013 10:04:53 -0500
From:	Alex Thorlton <athorlton@....com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>,
	"Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
	Rik van Riel <riel@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>,
	"Eric W . Biederman" <ebiederm@...ssion.com>,
	Sedat Dilek <sedat.dilek@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Dave Jones <davej@...hat.com>,
	Michael Kerrisk <mtk.manpages@...il.com>,
	"Paul E . McKenney" <paulmck@...ux.vnet.ibm.com>,
	David Howells <dhowells@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Al Viro <viro@...iv.linux.org.uk>,
	Oleg Nesterov <oleg@...hat.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Kees Cook <keescook@...omium.org>, Robin Holt <holt@....com>
Subject: Re: [PATCH 0/8] Re: [PATCH] Add per-process flag to control thp

> This 321.equake_l thing is not public, right? Do you have anything
> that
> is public that shows the same problem?

The quake test comes from the SPEC OMP benchmarks.  While I believe this
suite is available to anybody, I don't think it's free.  I was given
the test by our benchmarking team, I'll have to ask them if this is
publicly available/if they know of any publicly available tests that can
reproduce the issue.

> Do you have any idea where all the extra time is spend? 

I'm working on that as we speak.  I was trying to eliminate the
possibility that the vclear patches would help solve the problem,
before digging any deeper.  I should have some more information on
exactly where it's getting hung up in a few hours.

- Alex
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