Re: RFC: THE OFFLINE SCHEDULER
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- To: raz ben yehuda <raziebe@xxxxxxxxx>
- Subject: Re: RFC: THE OFFLINE SCHEDULER
- From: "Chris Friesen" <cfriesen@xxxxxxxxxx>
- Date: Thu, 27 Aug 2009 10:51:35 -0600
- Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx>, mingo@xxxxxxx, peterz@xxxxxxxxxxxxx, maximlevitsky@xxxxxxxxx, efault@xxxxxx, riel@xxxxxxxxxx, wiseman@xxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-rt-users@xxxxxxxxxxxxxxx
- In-reply-to: <1251322663.3882.48.camel@raz>
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On 08/26/2009 03:37 PM, raz ben yehuda wrote:
>
> On Wed, 2009-08-26 at 15:15 -0600, Chris Friesen wrote:
>> We gave it as close to a whole cpu as we could using cpu and irq
>> affinity and we used message queues in shared memory to allow another
>> cpu to handle I/O. In our case we still had kernel threads running on
>> the app cpu, but if we'd had a straightforward way to avoid them we
>> would have used it.
> Chris. I offer myself to help anyone wishes to apply OFFSCHED.
I just went and read the docs. One of the things I noticed is that it
says that the offlined cpu cannot run userspace tasks. For our
situation that's a showstopper, unfortunately.
Chris
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