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Date:      Mon, 16 Dec 2002 22:17:50 -0800
From:      Luigi Rizzo <rizzo@icir.org>
To:        mika ruohotie <bsdhack@aeon.st>
Cc:        freebsd-hackers@FreeBSD.ORG
Subject:   Re: net.inet.ip.dummynet.hash_size
Message-ID:  <20021216221750.B99444@xorpc.icir.org>
In-Reply-To: <20021216111042.A61440@rigel.grass.st>; from bsdhack@aeon.st on Mon, Dec 16, 2002 at 11:10:42AM %2B0200
References:  <20021216111042.A61440@rigel.grass.st>

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On Mon, Dec 16, 2002 at 11:10:42AM +0200, mika ruohotie wrote:
> 
> hello,
> 
> ipfw man page says:
> 
>      buckets hash-table-size
>              Specifies the size of the hash table used for storing the various
>              queues.  Default value is 64 controlled by the sysctl(8) variable
>              net.inet.ip.dummynet.hash_size, allowed range is 16 to 1024.
> 
> and my question is if it's possible to somehow go beyond 1024, or if
> doing so wouldnt be adviced. (ie, performance would be poor or so)

i think there was some recent commit which raises the limit above 1024
-- mind you, the number of buckets is not the upper bound for the
number of flows.

	cheers
	luigi

> i'd need to experiment shaping with "large" supernets giving each
> single ip addresses a designated bandwidth. (i'm using gigabit, if
> someone wonders if i really need that many, and the answer is "yes")
> 
> 
> mickey
> 
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