On 05/10/2011 02:30 PM, Mr Dash Four wrote:
> I have the following skeleton of classes ("a" is the number of my
> eth0 device in tcdevices):
>
> a:13, priority:2, guaranteed speed 320kbit to 320kbit - Main class
> for outgoing - to my ISP1 - traffic (much lower speeds than the rest
> of my nets: 40KB/s out, 1200KB/s in - that is KBytes - as in 1024
> bytes, not kbits)! a:13:14, priority 2, guaranteed speed 120kbit to
> full (40KB/s), dmax 50ms, umax 1500b - VOIP traffic routed outside
> a:13:15, priority 3, guaranteed speed 80kbit to full, dmax ??, umax
> 1500b - VPN 1 traffic going out a:13:16, priority 4, guaranteed speed
> 80kbit to full, dmax ??, umax 1500b - VPN 2 traffic going out
> a:13:17, priority 5, guaranteed speed 40kbit to full, dmax ??, umax
> 1500b - other unclassified traffic going out a:18 ... (other internal
> GBit traffic)
>
> My question is - I have read the superbly put section on HFSC in the
> complex traffic shaping article
> (http://shorewall.net/traffic_shaping.htm), which deciphers the "HFSC
> Scheduling with Linux" article //pretty well (thanks Tom!),You're welcome. > and spend an hour calculating the subclasses' dmax times (yes, I > managed to do it at the end, I think) following the example in that > article. > > What I am not entirely certain is this - can I use more than one > class on which to "boost" the dmax values as I did with the VOIP > class (13:14) above - on class 13:15 for example - and dump all the > excesses from both classes on the remaining "leaves" - classes 16 and > 17? I know their dmax values could be in their hundreds of > milliseconds, but I am prepared to take that hit. I don't know. I guess that you will have to experiment and see. Please let us know what you learn, so I can update the Complex TC doc with your findings. -Tom -- Tom Eastep \ When I die, I want to go like my Grandfather who Shoreline, \ died peacefully in his sleep. Not screaming like Washington, USA \ all of the passengers in his car http://shorewall.net \________________________________________________
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