From: Andi Kleen <andi@firstfloor.org>
To: "Américo Wang" <xiyou.wangcong@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>, linux-kernel@vger.kernel.org
Subject: Re: 2.6.33 pagemap endless read loop
Date: Sun, 10 Jan 2010 13:37:02 +0100 [thread overview]
Message-ID: <20100110123702.GC25323@basil.fritz.box> (raw)
In-Reply-To: <20100110063335.GA3005@hack>
> Are you sure
I don't know if it's really endless, but it's doing a good emulation
of it if it's not.
>
> On my 32bit machine, it runs for a long time, but finally exits.
That was on 64bit.
proc01 had accumulated several minutes of CPU time when I stopped it.
> From the document of pagemap, it is the mapping of all the virtual pages
> of a process, on x86-32, it should be 4G/4K = 1024*1024 pages, also
Only the mapped ones surely?
Right now it looks like it dumps all the holes and that obviously
will never finish on 64bit which has 47bits of address space.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2010-01-10 12:37 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-10 2:09 2.6.33 pagemap endless read loop Andi Kleen
2010-01-10 6:33 ` Américo Wang
2010-01-10 12:37 ` Andi Kleen [this message]
2010-01-12 5:59 ` Mike Galbraith
2010-01-12 15:32 ` Américo Wang
2010-01-12 16:28 ` Andi Kleen
2010-01-13 2:08 ` Américo Wang
[not found] ` <20100113141648.42eff724.akpm@linux-foundation.org>
[not found] ` <1263421562.29868.5000.camel@calx>
[not found] ` <20100113143055.7bea30c5.akpm@linux-foundation.org>
[not found] ` <1263423916.29868.5009.camel@calx>
[not found] ` <20100113151502.fa425247.akpm@linux-foundation.org>
[not found] ` <20100114055319.GA17671@localhost>
[not found] ` <20100113221013.b1beecb4.akpm@linux-foundation.org>
2010-01-14 8:06 ` Wu Fengguang
2010-01-14 8:30 ` Andi Kleen
2010-01-14 8:52 ` [PATCH] pagemap: early return on unmapped areas Wu Fengguang
2010-01-14 17:02 ` Matt Mackall
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