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Date: Thu, 15 Jun 2017 12:22:14 +0200
From: Peter Holm <peter@holm.cc>
To: Sean Bruno <sbruno@freebsd.org>
Cc: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: Re: svn commit: r319921 - head/sys/net
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On Wed, Jun 14, 2017 at 09:21:30AM -0600, Sean Bruno wrote:
> 
> 
> On 06/14/17 08:46, Peter Holm wrote:
> > On Wed, Jun 14, 2017 at 08:38:36AM -0600, Sean Bruno wrote:
> >>
> >>
> >> On 06/14/17 03:17, Peter Holm wrote:
> >>> On Tue, Jun 13, 2017 at 11:16:39PM +0000, Sean Bruno wrote:
> >>>> Author: sbruno
> >>>> Date: Tue Jun 13 23:16:38 2017
> >>>> New Revision: 319921
> >>>> URL: https://svnweb.freebsd.org/changeset/base/319921
> >>>>
> >>>> Log:
> >>>>   Add new sysctl to allow changing of timing of the txq timers.
> >>>>   
> >>>>   Add new sysctl to override use of busdma in the driver.
> >>>>   
> >>>>   Submitted by:	Drew Gallitin <gallatin@netflix.com>
> >>>>
> >>>> Modified:
> >>>>   head/sys/net/iflib.c
> >>>>
> >>>> Modified: head/sys/net/iflib.c
> >>>> ==============================================================================
> >>>> --- head/sys/net/iflib.c	Tue Jun 13 22:57:57 2017	(r319920)
<snip>

I fried up some test hardware and have some more info for you.
Here's a test triggered by a NFS test scenario:

https://people.freebsd.org/~pho/stress/log/sbruno002.txt

I have uploaded the kernel + core to:
https://people.freebsd.org/~pho/kernel+vmcore.519-t2.txz

Regards,

- Peter