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Date:      Thu, 12 May 2016 14:58:34 +0900
From:      YongHyeon PYUN <pyunyh@gmail.com>
To:        Yuri <yuri@rawbw.com>
Cc:        freebsd-net@freebsd.org
Subject:   Re: Marvell Yukon (msk) network card causes the "sticky mouse" problem: mouse stops for extended periods of time
Message-ID:  <20160512055834.GA1198@michelle.fasterthan.co.kr>
In-Reply-To: <57341899.2040600@rawbw.com>
References:  <572CC657.8040207@rawbw.com> <572E0AF1.5060307@grosbein.net> <572E18E3.30300@rawbw.com> <20160508093305.GA1558@michelle.fasterthan.co.kr> <57341899.2040600@rawbw.com>

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On Wed, May 11, 2016 at 10:46:01PM -0700, Yuri wrote:
> On 05/08/2016 02:33, YongHyeon PYUN wrote:
> >msk(4) will try to use MSI unless not configured to do so the IRQ
> >wouldn't be shared with other devices.  If msk(4) is using MSI you
> >should see a high irq number greater than or equal to 256 in vmstat
> >output.  Given that you're seeing issues with MSI, try disabling
> >MSI for msk(4).  Add the following tunable to /boot/loader.conf and
> >reboot.
> >
> >hw.msk.msi_disable="1"
> 
> For some reason hw.msk.msi_disable isn't found:
> # sysctl hw.msk.msi_disable=1
> sysctl: unknown oid 'hw.msk.msi_disable'
> even though it is defined in sys/dev/msk/if_msk.c and if_msk module is 
> loaded.

hw.msk.msi_disable is a loader tunable so you can't check it with
sysctl(8).  Add the tunable to boot/loader.conf to take it effect.
See loader.conf(5) for more information.



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