From: Lin Ming <ming.m.lin@intel.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
"Zhang, Yanmin" <yanmin_zhang@linux.intel.com>,
Mel Gorman <mel@csn.ul.ie>
Subject: Re: specjbb2005 fails with 2.6.29-rc4
Date: Thu, 12 Feb 2009 11:23:55 +0800 [thread overview]
Message-ID: <1234409035.7699.34.camel@minggr.sh.intel.com> (raw)
In-Reply-To: <alpine.LFD.2.00.0902111733170.3189@localhost.localdomain>
On Thu, 2009-02-12 at 09:35 +0800, Linus Torvalds wrote:
>
> On Thu, 12 Feb 2009, Lin Ming wrote:
> >
> > Test with Jrockit VM fails. And it works well if OpenJDK is used
> > instead.
>
> I suspect maybe it uses hugetlbs?
>
> There were a couple of commits to fix VM_ACCOUNT for hugepage areas
> recently. See
>
> - 5a6fe125950676015f5108fb71b2a67441755003: "Do not account for the
> address space used by hugetlbfs using VM_ACCOUNT"
>
> - 17c9d12e126cb0de8d535dc1908c4819d712bc68: "Do not account for hugetlbfs
> quota at mmap() time if mapping [SHM|MAP]_NORESERVE"
>
> because hugetlb mappings have their own magical VM accounting.
>
> So can you check if current -git fixes it?
Yes, current -git fixes it.
Lin Ming
prev parent reply other threads:[~2009-02-12 3:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-12 1:16 Lin Ming
2009-02-12 1:20 ` Lin Ming
2009-02-12 1:28 ` Zhang, Yanmin
2009-02-12 1:35 ` Linus Torvalds
2009-02-12 3:23 ` Lin Ming [this message]
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