From mboxrd@z Thu Jan 1 00:00:00 1970 From: Victor Cassar Date: Thu, 13 Feb 2003 16:00:28 +0000 Subject: Re: [LARTC] quantum value for voip Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: lartc@vger.kernel.org Thanks Stef Yep i missunderstood the quantum concept (it=B4s clear now), but since my voip class was configured with enough bw this doesn=B4t matter Reading more on docum.org, i find hte possible cause of the delays i was using sfq (128p queue) on the leaf i removed sfq from the voip class I will try also with other disciplines.. like tbf just to have a deeper understanding of queuing in real life applications Are there any recomendation on which queuing discipline to use with voip? (my stats show 100 bytes per packet average in voip) i=B4m doing more tests now and i=B4ll re re-read the full lartc. doc regards --- Stef Coene wrote: > On Thursday 13 February 2003 00:59, Victor Cassar > wrote: > > Well > > > > I understand why quantum should be at least equal > to > > mtu size > > > > but let=B4s think in this > > > > if i have a dsl link and i want to give more > quality > > to > > "one voip user" > > i=B4ve already solved the dsl upload problem > transfering > > the bottleneck to my shapping box. > > > > Should i change the quantum to a lower value for > that > > class? > > > > any ideas or comments about this? > Do you know where quantum is used for? It's for > classes that are asking for=20 > remaining bandwidth. So if that "one voip user" is > never asking for more=20 > then the configured rate of its class, quantum is > never used. So it really=20 > depends on how you configured the classes to answer > that question. >=20 > And taking a quantum of 10 byte is not "wrong". But > if you send 1000byte and=20 > your quantum is 10byte, htb will use 10byte in it's > calculations. So it can=20 > disturb the setup, but nothing bad will happen. >=20 > Stef >=20 > --=20 >=20 > stef.coene@docum.org > "Using Linux as bandwidth manager" > http://www.docum.org/ > #lartc @ irc.oftc.net >=20 > _______________________________________________ > LARTC mailing list / LARTC@mailman.ds9a.nl > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/ __________________________________________________ Do you Yahoo!? Yahoo! Shopping - Send Flowers for Valentine's Day http://shopping.yahoo.com _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/