Messages in this thread | | | Date | Wed, 1 May 2013 09:34:49 -0500 | From | "Philip J. Kelleher" <> | Subject | Re: [PATCH 8/9] rsxx: Fixes CPU usage issues on RHEL 6 Kernels. |
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Again, thanks for the prompt reply.
Also, sorry for my poor explaination skills :)
The RHEL 6.x version of the driver is using the legacy worqueue create function, 'create_singlethread_workqueue'. This would cause heavy usage of one CPU if data was being thrashed pretty hard. So, in order to fix it, workqueues are now being created with 'create_workqueue' and synchronization with mutexes.
Thanks, -Philip Kelleher
On Wed, May 01, 2013 at 01:44:20PM +0200, Jens Axboe wrote: > On Tue, Apr 30 2013, Philip J. Kelleher wrote: > > From: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> > > > > This changes how the driver schedules the work to the > > workqueue threads. > > > > Note: This patch is primarily for the Red Hat 6 Kernels. > > You need to properly explain the problem and how it's fixed in the > changelog. The above really makes the read none the wiser on what the > issue is. > > -- > Jens Axboe >
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