[Chilli] Chilli Digest, Vol 63, Issue 14
Ming-Ching Tiew
mctiew at yahoo.com
Fri Mar 6 23:41:44 UTC 2015
I tend to think it's iptables problem. For bandwidth control to work, the packets at the LAN interface has to be dropped by iptables.
From: Bojan Pogacar <bojan at gajba.net>
To: chilli at coova.org
Sent: Saturday, March 7, 2015 7:15 AM
Subject: Re: [Chilli] Chilli Digest, Vol 63, Issue 14
Hello David and others!
Does anyone has any idea why on OpenWRT (Barrier Breaker, final release)
upload limit is not working - the oposite problem, it is not sharp
enough: https://dev.openwrt.org/ticket/17995
Kind regards,
Bojan
Dne 28.2.2015 ob 1:28 je David Bird zapisal(a):
> You can use --tcpmss to clamp the TCP MSS. But, I agree, your issue is
> very likely gso related. Something like "sudo ethtool -K eth1 gro off"
>
> On Fri, Feb 27, 2015 at 2:00 PM, Richard REY <richard at rexy.fr
> <mailto:richard at rexy.fr>> wrote:
>
> Yes, but this doesn't explain why there isn't any problem when the
> flows pass through the appliance. this issue is seen only when the
> TCP flows is sent to an internal processes
>
> I'll try to disable packet off-loading next monday.
> I'll also try to forbid the "jumbo frame" on NIC
>
> Rexy
>
> Le 27/02/2015 20:50, Alexandru Gheorghe a écrit :
>
> Usually fragmentation needed means you need to adjust the MTU of
> your nic.
>
> Alex
>
>
> On 02/26/2015 02:30 PM, Claus Stjernoe wrote:
>
> Hi Richard,
>
> Try to disable packet off-loading on the Gigabit NIC.
>
> Kind regards,
> Claus
>
> -----Oprindelig meddelelse-----
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> Emne: Chilli Digest, Vol 63, Issue 14
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> Today's Topics:
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> 1. Re: Chilli Digest, Vol 63, Issue 12 (Richard REY)
>
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> ------------------------------__------------------------------__----------
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> Message: 1
> Date: Wed, 25 Feb 2015 22:48:56 +0100
> From: Richard REY <richard at rexy.fr <mailto:richard at rexy.fr>>
> To: chilli at coova.org <mailto:chilli at coova.org>
> Subject: Re: [Chilli] Chilli Digest, Vol 63, Issue 12
> Message-ID: <54EE4348.2090503 at rexy.fr
> <mailto:54EE4348.2090503 at rexy.fr>>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> Hi,
> I use COOVA in its last version (SVN revision 492) running
> on an ALCASAR appliance (mageia 4.1 - kernel 3.14.32), all
> is OK excepted a flow issue.
> When a TCP stream goes across the appliance there isn't any
> flow issue (forward mode). BUT when a TCP stream is sent
> inside the appliance (to a HTTP proxy for example) the
> observed flow is very weak (Input mode). The problem is
> maximal when the card connected to COOVA is in the Gigabit mode.
>
> Our investigation :
> From the appliance, we try to download a file located on
> a FTP server connected on the network controlled by COOVA.
> Without COOVA the observed flow in gigabit mode is about
> 888Mb/s whereas with COOVA we can see just
> 68 Kb/s (YES 68 Kb/s). Regarding the packets exchanged we
> can see ICMP packets sent by the appliance (Destination
> unreachable (Fragmentation needed).
> We found a by-pass ?solution? by fixing the speed of the
> card to 100Mb/s. At this speed the phenomenon is practically
> invisible (just one ICMP packet sent) and the flow
> approaches the maximum supported by the network card. On a
> virtual machine where we can't fix Ethernet speed, we must
> choose a 100Mb/s virtual Ethernet card when building the VM.
> We have the Pcap file of our investigation. I say it again,
> this issue is seen only when the TCP flows is sent to an
> internal processes (in 'forward' mode all is ok).
>
> Regards
> Rexy & ALCASAR team
>
> Le 23/02/2015 08:59, kl a ?crit :
>
> I see problem on kernel version > 3.7 right up to 3.10.
> Above 3.10 not tested.
> However, in the other quoted post, it says kernel 2.6.39
> upto 3.3.4. Above that not tested.
> Something not consist here.
>
> So which kernel version you guys are using which are
> seeing this problem ?
>
>
> On Monday, February 23, 2015 3:13 PM, Danny Magat
> <danny at sb-ps.ae <mailto:danny at sb-ps.ae>> wrote:
> This problem is still exist on my setup.
> http://lists.coova.org/__pipermail/chilli/2013-__November/002437.html
> <http://lists.coova.org/pipermail/chilli/2013-November/002437.html>
>
> I hope that somebody will give us a hint on how to solve
> this.
>
> Regards,
> Danny
>
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> Subject: Chilli Digest, Vol 63, Issue 12
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> 1. Too sharp upload bandwidth limit on 1gbps wired
> network (kl)
>
>
> ------------------------------__------------------------------__----------
>
> Message: 1
> Date: Sun, 22 Feb 2015 02:21:53 +0000 (UTC)
> From: kl <kl522 at yahoo.com <mailto:kl522 at yahoo.com>>
> To: Chilli List <chilli at coova.org <mailto:chilli at coova.org>>
> Subject: [Chilli] Too sharp upload bandwidth limit on
> 1gbps wired
> network
> Message-ID:
>
> <122480453.6349415.__1424571713923.JavaMail.yahoo at __mail.yahoo.com
> <mailto:122480453.6349415.1424571713923.JavaMail.yahoo at mail.yahoo.com>>
> Content-Type: text/plain; charset=UTF-8
>
>
>
> Nobody is facing this issue with coova chilli ?
>
> http://www.coova.org/node/5171
>
> https://github.com/coova/__coova-chilli/issues/32
> <https://github.com/coova/coova-chilli/issues/32>
>
> Happens only on Gigabit wired network and certain kernel
> verson.
> Applies to 1.2.9, 1.3.0 and other versions ....
>
>
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--
Lep pozdrav,
Bojan Pogačar
GSM: 031 262 535
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