netdev - RE: [Bugme-new] [Bug 9808] New: system hung with htb QoS

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Message-ID: <36D9DB17C6DE9E40B059440DB8D95F520452C44F@orsmsx418.amr.corp.intel.com>
Date:	Fri, 1 Feb 2008 09:36:10 -0800
From:	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>
To:	"Andrew Morton" <akpm@...ux-foundation.org>,
	<netdev@...r.kernel.org>
Cc:	<bilias@....physics.uoc.gr>, <bugme-daemon@...zilla.kernel.org>,
	"Kok, Auke-jan H" <auke-jan.h.kok@...el.com>
Subject: RE: [Bugme-new] [Bug 9808] New: system hung with htb QoS

Andrew Morton wrote:
>> On Thu, 24 Jan 2008 03:03:11 -0800 (PST)
>> bugme-daemon@...zilla.kernel.org wrote:
>> http://bugzilla.kernel.org/show_bug.cgi?id=9808 
>> 
>>            Summary: system hung with htb QoS
>>            Product: Networking
>>            Version: 2.5
>>      KernelVersion: 2.6.23.9
>>           Platform: All
>>         OS/Version: Linux
>>               Tree: Fedora
>>             Status: NEW
>>           Severity: normal
>>           Priority: P1
>>          Component: Netfilter/Iptables
>>         AssignedTo:
>>         networking_netfilter-iptables@...nel-bugs.osdl.org
>> ReportedBy: bilias@....physics.uoc.gr 

This user was able to eliminate the tx hang problem with htb QoS by
disabling TSO.  We also have some reports of xen hangs when TSO is
enabled as well.  Not sure if they are related.

At this point this user has a workaround.  We will continue to try to
reproduce here to see if we can root cause the hardware issue, but we
haven't had any luck so far.
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