From: Andi Kleen <andi@firstfloor.org>
To: Khalid Aziz <khalid.aziz@oracle.com>
Cc: aarcange@redhat.com, akpm@linux-foundation.org,
hannes@cmpxchg.org, mgorman@suse.de, riel@redhat.com,
minchan@kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH] Fix aio performance regression for database caused by THP
Date: Thu, 15 Aug 2013 12:34:05 -0700 [thread overview]
Message-ID: <8738qakatu.fsf@tassilo.jf.intel.com> (raw)
In-Reply-To: <1376590389.24607.33.camel@concerto> (Khalid Aziz's message of "Thu, 15 Aug 2013 12:13:09 -0600")
Khalid Aziz <khalid.aziz@oracle.com> writes:
> I am working with a tool that simulates oracle database I/O workload.
> This tool (orion to be specific -
> <http://docs.oracle.com/cd/E11882_01/server.112/e16638/iodesign.htm#autoId24>)
> allocates hugetlbfs pages using shmget() with SHM_HUGETLB flag.
Is this tool available for download?
I would rather prefer to address the locking overhead in THP too.
The fundamental problem is that we have to touch all the pages?
-Andi
--
ak@linux.intel.com -- Speaking for myself only
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WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <andi@firstfloor.org>
To: Khalid Aziz <khalid.aziz@oracle.com>
Cc: aarcange@redhat.com, akpm@linux-foundation.org,
hannes@cmpxchg.org, mgorman@suse.de, riel@redhat.com,
minchan@kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH] Fix aio performance regression for database caused by THP
Date: Thu, 15 Aug 2013 12:34:05 -0700 [thread overview]
Message-ID: <8738qakatu.fsf@tassilo.jf.intel.com> (raw)
In-Reply-To: <1376590389.24607.33.camel@concerto> (Khalid Aziz's message of "Thu, 15 Aug 2013 12:13:09 -0600")
Khalid Aziz <khalid.aziz@oracle.com> writes:
> I am working with a tool that simulates oracle database I/O workload.
> This tool (orion to be specific -
> <http://docs.oracle.com/cd/E11882_01/server.112/e16638/iodesign.htm#autoId24>)
> allocates hugetlbfs pages using shmget() with SHM_HUGETLB flag.
Is this tool available for download?
I would rather prefer to address the locking overhead in THP too.
The fundamental problem is that we have to touch all the pages?
-Andi
--
ak@linux.intel.com -- Speaking for myself only
next prev parent reply other threads:[~2013-08-15 19:34 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-15 18:13 [RFC PATCH] Fix aio performance regression for database caused by THP Khalid Aziz
2013-08-15 18:13 ` Khalid Aziz
2013-08-15 19:34 ` Andi Kleen [this message]
2013-08-15 19:34 ` Andi Kleen
2013-08-15 20:15 ` Khalid Aziz
2013-08-15 20:15 ` Khalid Aziz
2013-08-15 21:16 ` Andrew Morton
2013-08-15 21:16 ` Andrew Morton
2013-08-15 23:22 ` Greg KH
2013-08-15 23:22 ` Greg KH
2013-08-16 9:04 ` Kirill A. Shutemov
2013-08-16 9:04 ` Kirill A. Shutemov
2013-08-16 14:14 ` Khalid Aziz
2013-08-16 14:14 ` Khalid Aziz
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