[Bloat] Getting started with sqm-scripts - latency good, bandwidth decimated

moeller0 moeller0 at gmx.de
Wed Jan 20 12:42:04 EST 2016


Hi Etienne,

I could be out to lunch, but I always assumed for virtual interfaces the txque does not matter as packets are immediate passed to the real interface.

Best Regards
	Sebastian

> On Jan 20, 2016, at 18:09 , Etienne Champetier <champetier.etienne at gmail.com> wrote:
> 
> 
> 
> 2016-01-20 17:54 GMT+01:00 Brandon Applegate <brandon at burn.net>:
> 
>> On Jan 20, 2016, at 11:47 AM, Etienne Champetier <champetier.etienne at gmail.com> wrote:
>> 
>> Hi Brandon,
>> 
>> e quickly read the thread (maybe too quickly),
>> from what i remember for virtual interface txqueuelen is 0 by default, so nothing work as expected
>> can you check the txqueuelen with ip -a ?
>> (i've found no reference to txqueuelen in sqm-scripts)
>> 
>> see also
>> https://wiki.openwrt.org/doc/howto/packet.scheduler/packet.scheduler#tips 
> 
> I haven’t done anything manually to change txqueuelen.  Whatever is here is default (1000 on eth) or I assume set by sqm-scripts / tc (32).
> 
> I believe this is the output you are looking for:
> 
>> 
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 
>     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
> 2: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP qlen 1000
>     link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff
> 3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP qlen 1000
>     link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff
> 4: eth0.666 at eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc htb state UP 
>     link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff
> 5: eth0.10 at eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
>     link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff
> 6: eth0.11 at eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
>     link/ether xx:xx:xx:xx:xx:xx brd ff:ff:ff:ff:ff:ff
> 7: ifb0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN qlen 32
>     link/ether 52:18:cd:a7:ad:71 brd ff:ff:ff:ff:ff:ff
> 8: ifb1: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN qlen 32
>     link/ether 5e:f0:86:88:8d:8e brd ff:ff:ff:ff:ff:ff
> 11: ifb4eth0.666: <BROADCAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc htb state UNKNOWN qlen 32
>     link/ether 86:68:83:69:2e:b2 brd ff:ff:ff:ff:ff:ff
>> 
> 
> no qlen means 0 I think
> maybe try
> ip link set eth0.666 txqueuelen 1000
> 
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