From: Dave Hansen <dave@linux.vnet.ibm.com>
To: Tejun Heo <tj@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, Cody P Schafer <cody@linux.vnet.ibm.com>
Subject: Re: 32/64-bit NUMA consolidation behavior regresion
Date: Fri, 30 Nov 2012 12:55:48 -0800 [thread overview]
Message-ID: <50B91D54.2080507@linux.vnet.ibm.com> (raw)
In-Reply-To: <20121130204237.GH3873@htj.dyndns.org>
On 11/30/2012 12:42 PM, Tejun Heo wrote:
> On Wed, Nov 28, 2012 at 04:03:58PM -0800, Dave Hansen wrote:
>> My system is just qemu booted with:
>>
>> -smp 8 -m 8192 -numa node,nodeid=0,cpus=0-3 -numa node,nodeid=1,cpus=4-7
>>
>> Watch the "PERCPU:" line early in boot, and you can see the "Embedded"
>> come and go with or without your patch:
>>
>> [ 0.000000] PERCPU: Embedded 11 pages/cpu @f3000000 s30592 r0 d14464
>> vs
>> [ 0.000000] PERCPU: 11 4K pages/cpu @f83fe000 s30592 r0 d14464
> ...
>> I don't have a fix handy because I'm working on the original problem,
>> but I just happened to run across this during a bisect.
>
> Just tested 3.7-rc7 w/ qemu and it works as expected here.
>
> Can you please boot with the following debug patch and report the boot
> message before and after?
Hi Tejun,
I just tested with 3.7-rc7 and I'm seeing the expected behavior now.
Looks like it got fixed along the way somewhere. I was bisecting way
back in the 2.6.3x's. Sorry of the noise.
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WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave@linux.vnet.ibm.com>
To: Tejun Heo <tj@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, Cody P Schafer <cody@linux.vnet.ibm.com>
Subject: Re: 32/64-bit NUMA consolidation behavior regresion
Date: Fri, 30 Nov 2012 12:55:48 -0800 [thread overview]
Message-ID: <50B91D54.2080507@linux.vnet.ibm.com> (raw)
In-Reply-To: <20121130204237.GH3873@htj.dyndns.org>
On 11/30/2012 12:42 PM, Tejun Heo wrote:
> On Wed, Nov 28, 2012 at 04:03:58PM -0800, Dave Hansen wrote:
>> My system is just qemu booted with:
>>
>> -smp 8 -m 8192 -numa node,nodeid=0,cpus=0-3 -numa node,nodeid=1,cpus=4-7
>>
>> Watch the "PERCPU:" line early in boot, and you can see the "Embedded"
>> come and go with or without your patch:
>>
>> [ 0.000000] PERCPU: Embedded 11 pages/cpu @f3000000 s30592 r0 d14464
>> vs
>> [ 0.000000] PERCPU: 11 4K pages/cpu @f83fe000 s30592 r0 d14464
> ...
>> I don't have a fix handy because I'm working on the original problem,
>> but I just happened to run across this during a bisect.
>
> Just tested 3.7-rc7 w/ qemu and it works as expected here.
>
> Can you please boot with the following debug patch and report the boot
> message before and after?
Hi Tejun,
I just tested with 3.7-rc7 and I'm seeing the expected behavior now.
Looks like it got fixed along the way somewhere. I was bisecting way
back in the 2.6.3x's. Sorry of the noise.
next prev parent reply other threads:[~2012-11-30 20:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-29 0:03 32/64-bit NUMA consolidation behavior regresion Dave Hansen
2012-11-29 0:03 ` Dave Hansen
2012-11-30 20:42 ` Tejun Heo
2012-11-30 20:42 ` Tejun Heo
2012-11-30 20:55 ` Dave Hansen [this message]
2012-11-30 20:55 ` Dave Hansen
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