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Date:      Mon, 08 May 2006 20:10:47 -0300
From:      tpeixoto@widesoft.com.br
To:        tpeixoto@widesoft.com.br, .@babolo.ru, Lee Johnston <lee@wildcard.net.uk>,  freebsd-net@freebsd.org, Julian Elischer <julian@elischer.org>, mihai@duras.ro
Subject:   Re: Packet loss with traffic shaper and routing
Message-ID:  <445FCFF7.9070403@widesoft.com.br>
In-Reply-To: <20060504015524.GV728@funkthat.com>
References:  <1146645702.297895.80691.nullmailer@cicuta.babolo.ru> <44595B76.9010901@widesoft.com.br> <20060504015524.GV728@funkthat.com>

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Interesting.
I'll try to take a look when I have some free time and then post some 
comments.

Thanks.


John-Mark Gurney wrote:
> tpeixoto@widesoft.com.br wrote this message on Wed, May 03, 2006 at 22:40 -0300:
>> Anyway, I am very curious about the result of test 2. Why do the pipes 
>> have influence on system performance if there is nothing passing through 
>> them?
> 
> It looks like each tick all the pipes are scanned...  In dummynet:
>     /* Sweep pipes trying to expire idle flow_queues. */
>     for (i = 0; i < HASHSIZE; i++)
>         SLIST_FOREACH(pipe, &pipehash[i], next)
> 
> That bit of code should probably be run less often...
> 



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