kern/179975: igb(4) fails to do polling(4)
Antoine Beaupré
anarcat at koumbit.org
Tue Jun 25 20:30:01 UTC 2013
The following reply was made to PR kern/179975; it has been noted by GNATS.
From: Antoine =?utf-8?Q?Beaupr=C3=A9?= <anarcat at koumbit.org>
To: Mark Johnston <markj at freebsd.org>
Cc: bug-followup at freebsd.org
Subject: Re: kern/179975: igb(4) fails to do polling(4)
Date: Tue, 25 Jun 2013 16:20:05 -0400
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On 2013-06-25 16:10:10, Mark Johnston wrote:
> Hello,
>
> Prior to the change in the above-mentioned PR, igb's polling mode only
> worked with a single queue enabled. I submitted a patch to get it to
> work with multiple queues, and it was committed in r239109. It didn't
> make it into 9.1 though, so igb's polling mode with multiple queues is
> broken.
>
> You have two options. The first is to apply the above revision to your
> driver and recompile the kernel. I can help you with this if you need
> it. The second is to tell igb to only use one queue, using the following
> lines in /boot/loader.conf:
>
> hw.igb.num_queues=3D1
>
> You'll need to reboot to apply it. I don't think there's really much
> reason to have multiple queues enabled in polling mode, I just had a
> special use case.
Hi!
Thank you very much for the fast response!
I have recompiled with the patch and things seem to be holding. I will
keep the loader.conf hack in mind for now.
Will this patch make it to 9.2 or 9.1-p4?
Thanks!
=2D-=20
The individual has always had to struggle to keep from being overwhelmed
by the tribe. If you try it, you will be lonely often, and sometimes
frightened. But no price is too high to pay for the privilege of owning
yourself. - Friedrich Nietzsche
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