Re: [LARTC] Simply IMQ

[Andre Correa <andre.correa@pobox.com>]

Hi Walt, I'm the "Correa" from your list. In fact www.linuximq.net is a 
project from a group of people, not just me, who are working on: 
Devera->McHardy IMQ's code that was unmantained and now is alive again.

We can tell you that there is a lot of people in our mailling list who 
reports using IMQ in production, including myself, with great stability. 
My server is up for more then 160 days with around 100 PPPoE users on it 
all the time. I run it on other shapping servers as well.

We've eing working on IMQ last months and now there are stable versions 
for 2.4 and 2.6 kernels (up to 2.6.7), and one beta version being 
tested. In your scenario you better get the stable versions:

Patch for Linux-2.6.1 up to 2.6.7 - 
http://www.linuximq.net/patchs/linux-2.6.2-imq-4.diff

Patch for Linux-2.4.24 / 2.4.25 / 2.4.26 - 
http://www.linuximq.net/patchs/linux-2.4.26-imq.diff

Patch for iptables up to 1.2.11 - 
http://www.linuximq.net/patchs/iptables-1.2.9-imq1.diff

I don't know if someone used IMQ in a 27Mbps link but it is worth 
trying. I would like to invite you to visit our site at www.linuximq.net 
and join our low traffic mailling list.

If you ever decide to give our beta patch a try, it has some corrections 
and implementations as follows:

- Correction of ipv6 support "+"s issue (Hasso Tepper)
- Correction of imq_init_devs() issue that resulted in
kernel OOPS unloading IMQ as module (Norbert Buchmuller)
- Addition of functionality to choose number of IMQ devices
during kernel config (Andre Correa)
- Addition of functionality to choose how IMQ hooks on
PRE and POSTROUTING (after or before NAT) (Andre Correa)
- Cosmetic corrections (Norbert Buchmuller) (Andre Correa)


Please let us know if we can help you somehow.

Good Luck!

Andre



Walt Wyndroski wrote:
> I've followed this list for quite a long time and have even posted a couple
> of times. I used the early versions of IMQ from Devik (I think that was his
> name), and it worked well. I only ever got the chance to implement it in my
> test environment. I now need to implement it in my production environment.
> My Linux core router has nine interfaces and has a 27 megabit connection to
> the internet. It is quite busy much of the time. It runs Fedora Core 1 now
> but will most likely be upgraded to Fedora Core 2 in the next month or so.
> 
> Now with all that said, here is my question. I see that maintenance of IMQ
> has been passed on a couple of times. I see some people say that IMQ is not
> stable and should not be put into a production environment. My use of IMQ a
> year ago invovled only egress qdiscs using HTB and SFQ because the egress
> qdiscs were much more powerful and better than the ingress qdisc. The only
> problem that I ever had with IMQ was using the iptables target with both
> PREROUTING and POSTROUTING. I see Roy has posted that IMQ essentially
> crashes when doing egress shaping. Is this correct? I've always understood
> egress as outbound shaping/filtering and ingress as inbound
> shaping/filtering. I say that because I saw in an earlier post by Roy that
> he changed his terminology to INPUT,OUTPUT, and FORWARD. Was he not using
> the terms egress and ingress correctly? I see that the current 'big' problem
> is touching locally generated traffic. What I need to know is which version
> of IMQ is most stable for kernel 2.6? Or even kernel2.4? Is it Devera's?
> McHardy's? Correa's? or Roy's? Or should I just leave it alone? My apologies
> if I got names wrong.
> 
> This is probably a long email just to ask that question, but I can't seem to
> find an answer from the list archives. I downloaded the whole 46 mb archive
> and essentially read 90% of the posts related to IMQ. I'm just trying to get
> a good understanding of what's happening with/to IMQ.
> 
> Thank you in advance for any advice.
> 
> Walt Wyndroski
> 
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