http://www.pollere.net/CoDelnotes.html
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Dave Täht
SKYPE: davetaht
US Tel: 1-239-829-5608
http://www.bufferbloat.net
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On Mon, May 14, 2012 at 5:35 PM, Simon Barber wrote:
> Any chance of getting this patch released under a BSD license? I'd like to
> propose my friend in Broadcom use it for their DSL modem chipsets.
It's already dual-licensed BSD/GPL 2:
+/*
+ * Codel - The Controlled-Delay Active Queue Managemen
On Mon, 2012-05-14 at 20:31 +0200, Eric Dumazet wrote:
> On Mon, 2012-05-14 at 20:24 +0200, Juliusz Chroboczek wrote:
> > > There is an API to set ECN on UDP packets.
> > >
> > > setsockopt() IP_TOS, with val = 2
> >
> > Interesting, I didn't realise that. Is it also possible to read the ECN
> >
On 05/14/2012 11:30 AM, Juliusz Chroboczek wrote:
I think, but am not certain, jch is referring to the problem of
negotiating ecn over uTP.
No, I was actually unaware that Linux allows one to set the ECN bits
from userspace.
It's also possible to get them from userspace.
OTOH, you're right th
On Mon, 2012-05-14 at 20:24 +0200, Juliusz Chroboczek wrote:
> > There is an API to set ECN on UDP packets.
> >
> > setsockopt() IP_TOS, with val = 2
>
> Interesting, I didn't realise that. Is it also possible to read the ECN
> bits?
Yep
man 7 ip
IP_RECVTOS (since Linux 2.2)
If en
> Doesn't work on ingress presently, if you are using ifb (I can be wrong).
?
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> I think, but am not certain, jch is referring to the problem of
> negotiating ecn over uTP.
No, I was actually unaware that Linux allows one to set the ECN bits
from userspace.
OTOH, you're right that µTP doesn't currently support ECN. Not that it
matters much, ECN is useful for interactive co
> There is an API to set ECN on UDP packets.
>
> setsockopt() IP_TOS, with val = 2
Interesting, I didn't realise that. Is it also possible to read the ECN
bits?
-- Juliusz
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On 05/14/2012 11:03 AM, Eric Dumazet wrote:
On Mon, 2012-05-14 at 19:50 +0200, Juliusz Chroboczek wrote:
[Pro memoria, I'm the author of a few of the networking bits in
Transmission, notably the DHT, the µTP support and large parts of the
IPv6 code.]
0) No ecn on transmission, at least.
TCP f
On Mon, May 14, 2012 at 10:50 AM, Juliusz Chroboczek
wrote:
>
>> 4) Syntactically tc is missing some ip6 functionality, notably an
>> orthogonal "tos" field to the ipv4 version.
>
> Use ip6tables -j MARK.
ip6tables...
Doesn't work on ingress presently, if you are using ifb (I can be wrong).
U
On Mon, 2012-05-14 at 19:50 +0200, Juliusz Chroboczek wrote:
> [Pro memoria, I'm the author of a few of the networking bits in
> Transmission, notably the DHT, the µTP support and large parts of the
> IPv6 code.]
>
> > 0) No ecn on transmission, at least.
>
> TCP flows will use ECN if your system
[Pro memoria, I'm the author of a few of the networking bits in
Transmission, notably the DHT, the µTP support and large parts of the
IPv6 code.]
> 0) No ecn on transmission, at least.
TCP flows will use ECN if your system is configured to use ECN. µTP
doesn't do ECN, and there's no easy way to
Any chance of getting this patch released under a BSD license? I'd like
to propose my friend in Broadcom use it for their DSL modem chipsets.
Simon
On 05/10/2012 11:01 PM, Eric Dumazet wrote:
On Thu, 2012-05-10 at 23:36 -0400, David Miller wrote:
Applied, but there was a lot of trailing whi
Management Summary
In figures 5 and 6, the eye can't see the trend. 8 and 9 aren't as
bad, but it would be A Good Thing to make the trend explicit.
In a blog discussion with Jim Gettys, I noted that at least two of the
figures in /Controlling Queue Delay,/ by Kathleen Nichols and Van
Jac
I spent a little time this weekend thinking about how to make bittorrent
do more of the right thing on a fq_codel equipped edge gateway. I set up
a seeder (transmission-gtk) and watched it go. I was also going to try
hekate on the router itself but couldn't get it to cross build.
Notes:
0) No
On Mon, 2012-05-14 at 10:27 +0300, Jonathan Morton wrote:
>
> 2) The Traverse links lead me to two types of devices - one of which
> is a router-type box which looks promising, but comes without
> documentation
linitx.com can get the Geos although it's not listed on their web site.
And the Solos
On Mon, 2012-05-14 at 10:27 +0300, Jonathan Morton wrote:
> I really want to try combining CoDel and SFQ.
You could use fq_codel for that, available in net-next tree.
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On 10 May, 2012, at 10:02 am, David Woodhouse wrote:
> On Thu, 2012-05-10 at 09:54 +0300, Jonathan Morton wrote:
>> I want to buy a modem that I can put Linux on, and that supports ADSL2
>> + Annex M. Where can I get one?
>
> http://wiki.openwrt.org/doc/hardware/soc/soc.lantiq
> http://www.trav
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