linux-kernel - Re: NET_SCHED cbq dropping too many packets on a bonding interface

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Message-ID: <482D7685.6070300@trash.net>
Date:	Fri, 16 May 2008 13:56:53 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Jarek Poplawski <jarkao2@...il.com>
CC:	Kingsley Foreman <kingsley@...ernode.com.au>,
	Eric Dumazet <dada1@...mosbay.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: NET_SCHED cbq dropping too many packets on a bonding interface

Jarek Poplawski wrote:
> On Fri, May 16, 2008 at 07:01:02AM +0000, Jarek Poplawski wrote:
>> On Fri, May 16, 2008 at 03:42:18PM +0930, Kingsley Foreman wrote:
>> ...
>>> ok after some playing a bit if i use
>>>
>>> tc qdisc change dev bond0 parent 1: pfifo limit 30
>>>
>>> the dropped packets go away, im not sure if that is considered normal or  
>>> not, however any number under 30 gives me issues.
>> If there are no significant differences in configs between these 2.6.22
>> and 2.6.24/25 (e.g. things mentionned earlier by Eric) IMHO it's "more
>> than normal", but as I've written it would need a lot of your time and
>> work to check the rason.
> 
> BTW, it still doesn't have to mean any error: e.g. it could happen when
> kernel throughput is better while NIC tx speed stayed the same. So, it
> shouldn't probably bother you too much until there is no visible impact
> on latency or rates.


Yes. I don't think this is an error, the configuration
was simply broken.
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