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Date: Mon, 7 Apr 2008 23:37:43 -0700
From: "Paul Menage" <menage@google.com>
To: balbir@linux.vnet.ibm.com
Subject: Re: [-mm] Add an owner to the mm_struct (v8)
Cc: "Pavel Emelianov" <xemul@openvz.org>, "Hugh Dickins" <hugh@veritas.com>,
       "Sudhir Kumar" <skumar@linux.vnet.ibm.com>,
       "YAMAMOTO Takashi" <yamamoto@valinux.co.jp>,
       linux-kernel@vger.kernel.org, taka@valinux.co.jp, linux-mm@kvack.org,
       "David Rientjes" <rientjes@google.com>,
       "Andrew Morton" <akpm@linux-foundation.org>,
       "KAMEZAWA Hiroyuki" <kamezawa.hiroyu@jp.fujitsu.com>
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On Sat, Apr 5, 2008 at 10:38 PM, Balbir Singh <balbir@linux.vnet.ibm.com> wrote:
>  >
>  > How long does the test run for? How many threads does each client have?
>
>  The test on each client side runs for about 10 seconds. I saw the client create
>  up to 411 threads.
>

I'm not convinced that an application that creates 400 threads and
exits in 10 seconds is particular representative of a high-performance
application.

But I agree that it's an example of something it may be worth trying
to optimize for.

You mention that you saw tgid exits - what order did the individual
threads exit in? If we threw the mm to the last thread in the thread
group rather than the first, would that help?

Paul