[Bloat] About Setting Bandwidth limit with or without ethernet overhead?

[Y]

moeee :)

I don't use openwrt.
Maybe, so I cannot find /etc/config/sqm on my pc. 
But I use sqmscript with below setting.

UPLINK=815 # 98% of linkspeed
DOWNLINK=11603 # 98% of linkspeed
SCRIPT=simple.qos
LINKLAYER=atm
OVERHEAD=-4
EECN=NOECN

Thanks.
Yutaka.


On Wed, 7 Nov 2018 15:21:24 -0800
Sebastian Moeller <moeller0 at gmx.de> wrote:

> Hi Y,
> 
> when you shape for an ATM link you absolutely nned to set the
> linklayer to ATM. If you use openwrt why don't you post the contents
> of "cat /etc/config/sqm"
> here and we can go over it line by line?
> 
> Best Regards
> 	Sebastian
> 
> > On Nov 7, 2018, at 14:13, Y <intruder_tkyf at yahoo.fr> wrote:
> > 
> > I am sorry. Dave.
> > 
> > My actual speed with this setting , almost expected .
> > Around 90kbytes per second actual speed = 810kbit per second actual
> > setting speed * 48/53 considering atm connection. 
> > This settled speed doesn't include ethernet framing.
> > 
> > Maybe , 
> > Bandwidth = without ethernet overhead
> > tc-stab overhead = -14 
> > is correct.
> > 
> > Thank you .
> > 
> > On Thu, 8 Nov 2018 06:48:30 +0900
> > Y <intruder_tkyf at yahoo.fr> wrote:
> >   
> >> Hi , Dave
> >> Thank you for your reply.
> >> 
> >> I should show you tc-stab setting.
> >> 
> >> My connection is PPPoA via ethernet. PC connects ethernet directly.
> >> 
> >> ####stab linklayer atm overhead -4
> >> 
> >> I add PPPoA overhead 10 + Ethernet overhead -14 = -4
> >> But, settled Bandwith is 98% of link speed ( I mean this is
> >> settled bandwidth without ethernet overhead).
> >> 
> >> I should shape more?
> >> 
> >> Thanks.
> >> 
> >> On Wed, 07 Nov 2018 11:28:47 -0800
> >> Dave Taht <dave at taht.net> wrote:
> >>   
> >>> Y <intruder_tkyf at yahoo.fr> writes:
> >>>   
> >>>> Hi, I am Yutaka.
> >>>> 
> >>>> I connect internet via ethenet.	
> >>>> Shoud I set Bandwidth limit with or without ethernet overhead in
> >>>> any qdiscs?
> >>>> When I measured , It seems setting without ethernet overhead is
> >>>> correct.      
> >>> 
> >>> It depends on your next hop's framing. If you are on ethernet
> >>> going to ethernet, then you should set ethernet. If you are on
> >>> ethernet, going through a cablemodem, set docsis. If you are on
> >>> ethernet, going through dsl or something else, you set the framing
> >>> appropriately.
> >>> 
> >>> Without setting the framing appropriately you can run into
> >>> situations where your shaper can be 60% in accurate (dsl).
> >>>   
> >>>> 
> >>>> Thanks.
> >>>> _______________________________________________
> >>>> Bloat mailing list
> >>>> Bloat at lists.bufferbloat.net
> >>>> https://lists.bufferbloat.net/listinfo/bloat      
> >>   
> > 
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