Re: HTB/HSFC shaping precision

2007-11-21 Thread Ryousei Takano
Hi jamal and denys, > > One message later, thats what i dreamed about :-) > > Subject: [RFC][PATCH 1/3] NET_SCHED: PSPacer qdisc module > > On website they have very good explanation... > > http://www.gridmpi.org/gridtcp.jsp > > That looks interesting - without reading the papers a few questions a

Re: HTB/HSFC shaping precision

2007-11-21 Thread jamal
On Wed, 2007-21-11 at 12:31 +0200, Denys Fedoryshchenko wrote: > On Wed, 21 Nov 2007 10:47:10 +0100, Jarek Poplawski wrote > > > > But, if you have full control on your side, it looks like a kind of > > realtime traffic, and then HFSC should be more appropriate for this > > (but I only 'heard' abo

Re: HTB/HSFC shaping precision

2007-11-21 Thread Denys Fedoryshchenko
On Wed, 21 Nov 2007 10:47:10 +0100, Jarek Poplawski wrote > > But, if you have full control on your side, it looks like a kind of > realtime traffic, and then HFSC should be more appropriate for this > (but I only 'heard' about this). One message later, thats what i dreamed about :-) Subject: [RF

Re: HTB/HSFC shaping precision

2007-11-21 Thread Jarek Poplawski
On 20-11-2007 22:21, Denys Fedoryshchenko wrote: ... > If traffic is dropped - it will be resent, a lot of energy will be wasted for > nothing. Same bytes will pass all long way around earth just because i am not > able to manage my QoS box :-) Sure, but you'll use probably almost every bit you'

Re: HTB/HSFC shaping precision

2007-11-20 Thread Denys Fedoryshchenko
On Tue, 20 Nov 2007 21:00:56 +0100, Jarek Poplawski wrote > Denys Fedoryshchenko wrote, On 11/20/2007 10:43 AM: > > > > If let's say i will limit bandwidth to 1Mbps, and will try to send packets > > will 100Mbps speed, and will check which packets will be dropped. > > As a matter of fact,

Re: HTB/HSFC shaping precision

2007-11-20 Thread Jarek Poplawski
Denys Fedoryshchenko wrote, On 11/20/2007 10:43 AM: ... > If let's say i will limit bandwidth to 1Mbps, and will try to send packets > will 100Mbps speed, and will check which packets will be dropped. As a matter of fact, I wonder why you're so afraid of this dropping. It's usual method of auto

Re: HTB/HSFC shaping precision

2007-11-20 Thread Denys Fedoryshchenko
I wish i can setup soon my own lab (getting finally my personal room in company). About CBQ, i didn't use it since long time. There is anything good in it? What is interesting i did few tests with iperf as example, and what i found out: iperf running 60 seconds with 1Mbit bandwidth set (iperf -

Re: HTB/HSFC shaping precision

2007-11-19 Thread jamal
Denys, You certainly make a very compelling case. It is always compelling if you can translate a bug/feature into $$;->. So in your measurements, what kind of clock sources did you use? I think the parameters to worry about are: packet size, rate and clock source. I know that based on very old m

HTB/HSFC shaping precision

2007-11-19 Thread Denys Fedoryshchenko
Hi 2 all again This is not a bug report this time :-) Just it is very interesting question, about using Linux "shaping" technologies in serious jobs. What i realised few days ago, many ISP's set on their STM-1(15552 bits/s) links (over Cisco) packet buffer/queue 40 packets(for example). It m