QoS question

[TomVH]

first: i'm sorry for my bad english. But i have 2 little questions:

• is it possible to imlement ATM overhead calculations?
  something like:

  Code: Select all

  If interface = PPPoE-WAN then
     Enable "stab" on root hfsc class
  end if
  

  http://www.linuxhowtos.org/manpages/8/tc-stab.htm
  PS: the stab option can't be used with iproute2 2.6.29-1 (used by backfire edition of OpenWrt) but with the iproute2 2.6.35 (used by the thrunk edition of Openwrt) it's possible to use the "stab" option.
• Why Gargoyle use IMQ instead of IFB?

[pbix]

Gargoyle is based on the backfire branch so according to you we cannot use the 'stab' option. In the future the option will be available.

But I have investigated this subject in the past and the problem is that no one knows what the proper 'overhead' to use is. Every explanation I have seen is its possibly this or possible that depending on things no one can measure.

So I would need some way to resolve this issue and no it should not be an option since no one knows how to set it.

As far as IMQ vs IFB well all we had was IMQ so we used it. Not sure what the disposition of IFB is at this point in OpenWRT.