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Message-ID: <47EB75C5.20207@oracle.com>
Date: Thu, 27 Mar 2008 15:54:05 +0530
From: Gurudas Pai <gurudas.pai@...cle.com>
To: Ingo Molnar <mingo@...e.hu>
CC: linux-kernel@...r.kernel.org
Subject: Re: [BUG]:2.6.25-rc7 memory leak with hugepages.
Ingo Molnar wrote:
> * Gurudas Pai <gurudas.pai@...cle.com> wrote:
>
>> Hi,
>>
>> On 2.6.25-rc7 allocate hugepages and run a fio test with following
>> jobfile,
>
> could you try x86.git/latest:
>
> http://people.redhat.com/mingo/x86.git/README
>
> it has a fix that could fix such a leak.
>
> Ingo
Applied latest two patches and re-ran the test,
hugetlb: fix potential livelock in return_unused_surplus_hugepages()
hugetlb: indicate surplus huge page counts in per-node meminfo
Still same result,
>cat /proc/meminfo | grep Huge
HugePages_Total: 1000
HugePages_Free: 551
HugePages_Rsvd: 1
HugePages_Surp: 0
Hugepagesize: 2048 kB
>echo 0 > /proc/sys/vm/nr_hugepages
>cat /proc/meminfo | grep Huge
HugePages_Total: 450
HugePages_Free: 1
HugePages_Rsvd: 1
HugePages_Surp: 450
Hugepagesize: 2048 kB
Thanks,
-Guru
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