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Date: Wed, 10 Apr 2013 10:31:17 -0400
Message-ID: <CAJzLF9kHyj6i6n=i97Pcr6yZvKTm9z5kn1XA0bDmYuLHudi8_g@mail.gmail.com>
Subject: Re: New xfstests generic/308 causes XFS hang (high CPU use), at least
	on 32-bit
From: "Michael L. Semon" <mlsemon35@gmail.com>
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To: Rich Johnston <rjohnston@sgi.com>
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On casual glance, it looks like a test meant to test the end of 32-bit
offsets, built to test a specific ext4 case, and it happened to strafe XFS
on 32-bit in the process.  It is unknown to me whether a script with 64-bit
version of the numbers would have a bad effect.

Michael


On Wed, Apr 10, 2013 at 10:18 AM, Rich Johnston <rjohnston@sgi.com> wrote:

> On 04/10/2013 09:06 AM, Michael L. Semon wrote:
>
>> On 04/10/2013 09:46 AM, Michael L. Semon wrote:
>>
>>  The PC uses kernel 3.8-rc4 + Dave's CRC v4 patches + J. Liu's bitness
>>> patch.
>>>
>>
>> Oops, that was supposed to be "kernel 3.9-rc4."  Sorry.
>>
>> Michael
>>
>> ______________________________**_________________
>> xfs mailing list
>> xfs@oss.sgi.com
>> http://oss.sgi.com/mailman/**listinfo/xfs<http://oss.sgi.com/mailman/listinfo/xfs>
>>
>
> Runs fine on all my 64 bit machines.  I quickly ran a test using
> 3.9.0-rc1+ on a 32 bit machine.  I am seeing the same xfs_io 100% CPU usage.
>
> Looks 32 bit specific.
>
> --Rich
>
>

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<div dir=3D"ltr"><div>On casual glance, it looks like a test meant to test =
the end of 32-bit offsets, built to test a specific ext4 case, and it happe=
ned to strafe XFS on 32-bit in the process.=A0 It is unknown to me whether =
a script with 64-bit version of the numbers would have a bad effect.<br>
<br></div><div>Michael<br></div></div><div class=3D"gmail_extra"><br><br><d=
iv class=3D"gmail_quote">On Wed, Apr 10, 2013 at 10:18 AM, Rich Johnston <s=
pan dir=3D"ltr">&lt;<a href=3D"mailto:rjohnston@sgi.com" target=3D"_blank">=
rjohnston@sgi.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">On 04/10/2013 09:06 AM, Michael L. Semon wro=
te:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
On 04/10/2013 09:46 AM, Michael L. Semon wrote:<br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
The PC uses kernel 3.8-rc4 + Dave&#39;s CRC v4 patches + J. Liu&#39;s bitne=
ss<br>
patch.<br>
</blockquote>
<br>
Oops, that was supposed to be &quot;kernel 3.9-rc4.&quot; =A0Sorry.<br>
<br>
Michael<br>
<br>
______________________________<u></u>_________________<br>
xfs mailing list<br>
<a href=3D"mailto:xfs@oss.sgi.com" target=3D"_blank">xfs@oss.sgi.com</a><br=
>
<a href=3D"http://oss.sgi.com/mailman/listinfo/xfs" target=3D"_blank">http:=
//oss.sgi.com/mailman/<u></u>listinfo/xfs</a><br>
</blockquote>
<br>
Runs fine on all my 64 bit machines. =A0I quickly ran a test using 3.9.0-rc=
1+ on a 32 bit machine. =A0I am seeing the same xfs_io 100% CPU usage.<br>
<br>
Looks 32 bit specific.<span class=3D"HOEnZb"><font color=3D"#888888"><br>
<br>
--Rich<br>
<br>
</font></span></blockquote></div><br></div>

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