[LARTC] HTB or CBQ ?

[LARTC] HTB or CBQ ?

[brt_informatics]

Hi..
I've tried both (HTB & CBQ) the queuing descpliens and I think HTB is
more efficient than CBQ. But i think HTB is still in beta. I just want
to know if I can go for HTB right away. I mean, is it stable? I'm
trying to implement it in my company and thus stability and performance
is big issue in this case.
Please correct me if i'm wrong.
Thank you very much,
Bikrant
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Re: [LARTC] HTB or CBQ ?

[Stef Coene]

On Sunday 29 September 2002 07:40, brt_informatics@wlink.com.np wrote:
> Hi..
> I've tried both (HTB & CBQ) the queuing descpliens and I think HTB is
> more efficient than CBQ. But i think HTB is still in beta. I just want
> to know if I can go for HTB right away. I mean, is it stable? I'm
> trying to implement it in my company and thus stability and performance
> is big issue in this case.
> Please correct me if i'm wrong.
It's not because cbq is in the kernel for a long time that it is stable.  I 
know more bugs/problems with cbq then with htb.

I think htb is better because :
- design
- less obscure options
- actively maintained
- faster
- included in kernel 2.4.20 :)

Just my 2¢

Stef

-- 

stef.coene@docum.org
 "Using Linux as bandwidth manager"
     http://www.docum.org/
     #lartc @ irc.oftc.net

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Re: [LARTC] HTB or CBQ ?

[SERBAN Rares]

Hi Stef,

Please can you detail the arguments to use CBQ and
HTB? Why HTB is better than CBQ? Which are the
weakness of CBQ implementation which solved by HTB?

Thank you,

R.

--- Stef Coene <stef.coene@docum.org> wrote:
> On Sunday 29 September 2002 07:40,
> brt_informatics@wlink.com.np wrote:
> > Hi..
> > I've tried both (HTB & CBQ) the queuing descpliens
> and I think HTB is
> > more efficient than CBQ. But i think HTB is still
> in beta. I just want
> > to know if I can go for HTB right away. I mean, is
> it stable? I'm
> > trying to implement it in my company and thus
> stability and performance
> > is big issue in this case.
> > Please correct me if i'm wrong.
> It's not because cbq is in the kernel for a long
> time that it is stable.  I 
> know more bugs/problems with cbq then with htb.
> 
> I think htb is better because :
> - design
> - less obscure options
> - actively maintained
> - faster
> - included in kernel 2.4.20 :)
> 
> Just my 2¢
> 
> Stef
> 
> -- 
> 
> stef.coene@docum.org
>  "Using Linux as bandwidth manager"
>      http://www.docum.org/
>      #lartc @ irc.oftc.net
> 
> _______________________________________________
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Re: [LARTC] HTB or CBQ ?

[Stef Coene]

On Monday 30 September 2002 12:52, SERBAN Rares wrote:
> Hi Stef,
>
> Please can you detail the arguments to use CBQ and
> HTB? Why HTB is better than CBQ? Which are the
> weakness of CBQ implementation which solved by HTB?
For the performance difference, take a look at the htb homepage.  Devik did 
some tests with both htb2, htb3 and cbq.

Cbq has a weak theory background.  It works by calculating the idle time of 
the link.  But the only input we have to calculate this is the number of 
packets the NIC send.  So you have to know your NIC bandwidth, the average 
packet size, and some other obscure options (allot).  If you have different 
packet size or a changing NIC bandwidth (pppoe, pptp), you can get strange 
results with cbq.
Htb on the other hand is based on tbf.  It does not need to know NIC 
bandwidth, nor average packet size.  It has a total different approach to do 
traffic shaping.  I refer to the htb homepage for more info about the theory 
background of htb.

And one of the mose convincing arguments to me : htb is actively maintained.  
If there is a bug or performance problem, it will get fixed.

Stef 

-- 

stef.coene@docum.org
 "Using Linux as bandwidth manager"
     http://www.docum.org/
     #lartc @ irc.oftc.net

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Re: [LARTC] HTB or CBQ ?

[Michael T. Babcock]

Stef Coene wrote:

>And one of the mose convincing arguments to me : htb is actively maintained.  
>If there is a bug or performance problem, it will get fixed.
>  
>
And, being newer code that many of us have looked at, patches / fixes 
will probably flow to the maintainer faster than CBQ ones.

BTW, how many people are using the patched SFQ (ESFQ?) these days, and 
how stable is it?

-- 
Michael T. Babcock
C.T.O., FibreSpeed Ltd.
http://www.fibrespeed.net/~mbabcock


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Re: [LARTC] HTB or CBQ ?

[Stef Coene]

On Monday 30 September 2002 17:26, Michael T. Babcock wrote:
> Stef Coene wrote:
> >And one of the mose convincing arguments to me : htb is actively
> > maintained. If there is a bug or performance problem, it will get fixed.
>
> And, being newer code that many of us have looked at, patches / fixes
> will probably flow to the maintainer faster than CBQ ones.
>
> BTW, how many people are using the patched SFQ (ESFQ?) these days, and
> how stable is it?
I used it and it was stable.  I'm going to switch over to kernel 2.5.  Will 
the efsq patch apply?

Stef

-- 

stef.coene@docum.org
 "Using Linux as bandwidth manager"
     http://www.docum.org/
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Re: [LARTC] HTB or CBQ ?

[Michael T. Babcock]

Vladimír Trebický wrote:

>I use ESFQ and it's stable and functional ;-) Really. Read my article about
>not setting perturb too small.
>  
>
Yes, I saw that; its a good hint for SFQ as well (and it fixed some neat 
oddities too).

Anyone else seen this one?

ping -n {remote host}
{ 6 second delay }
64 bytes from 216.168.105.33: icmp_seq=0 ttl%5 time=6sec
64 bytes from 216.168.105.33: icmp_seq=1 ttl%5 time=5sec
64 bytes from 216.168.105.33: icmp_seq=2 ttl%5 time=4sec
64 bytes from 216.168.105.33: icmp_seq=3 ttl%5 time=3sec
64 bytes from 216.168.105.33: icmp_seq=4 ttl%5 time=2sec
64 bytes from 216.168.105.33: icmp_seq=5 ttl%5 time=1sec
64 bytes from 216.168.105.33: icmp_seq=6 ttl%5 time$2usec
64 bytes from 216.168.105.33: icmp_seq=7 ttl%5 time%0usec
...

-- 
Michael T. Babcock
C.T.O., FibreSpeed Ltd.
http://www.fibrespeed.net/~mbabcock


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Re: [LARTC] HTB or CBQ ?

[Robert Penz]

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> Anyone else seen this one?
>
> ping -n {remote host}
> { 6 second delay }
> 64 bytes from 216.168.105.33: icmp_seq=0 ttl=255 time=6sec
> 64 bytes from 216.168.105.33: icmp_seq=1 ttl=255 time=5sec
> 64 bytes from 216.168.105.33: icmp_seq=2 ttl=255 time=4sec
> 64 bytes from 216.168.105.33: icmp_seq=3 ttl=255 time=3sec
> 64 bytes from 216.168.105.33: icmp_seq=4 ttl=255 time=2sec
> 64 bytes from 216.168.105.33: icmp_seq=5 ttl=255 time=1sec
> 64 bytes from 216.168.105.33: icmp_seq=6 ttl=255 time=242usec
> 64 bytes from 216.168.105.33: icmp_seq=7 ttl=255 time=250usec
> ...

suse linux?   if so, reverse lookup doesn't work, for that ip.

- -- 
Regards,
Robert
- ----------------
Robert Penz
robert.penz AT outertech.com
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Re: [LARTC] HTB or CBQ ?

[Michael T. Babcock]

Robert Penz wrote:

>suse linux?   if so, reverse lookup doesn't work, for that ip.
>  
>
Note the 'ping -n' -- no reverse lookup being done.

-- 
Michael T. Babcock
C.T.O., FibreSpeed Ltd.
http://www.fibrespeed.net/~mbabcock


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