CentOS - Feb 2013 - Traffic shaping problem

Hi all,

I tried last week to do traffic shaping on a production system,
object of the exercise was simply to throttle the outgoing traffic.

tc qdisc add dev eth4 root tbf rate 300mbit burst 300kb latency 50ms

But the server became rather instable, crashing repeatedly without
anything in the logs.

Can anybody spot glaring mistakes in the tc command above,
or tell me what I should have done instead?

with kind regards,
  Bent Terp

From: Bent Terp <bent at terp.se>
> I tried last week to do traffic shaping on a production system,
> object of the exercise was simply to throttle the outgoing traffic.
> tc qdisc add dev eth4 root tbf rate 300mbit burst 300kb latency 50ms
> But the server became rather instable, crashing repeatedly without
> anything in the logs.
> Can anybody spot glaring mistakes in the tc command above,
> or tell me what I should have done instead?
I am no tc expert so last time I tested I had some success with the cbq.init
script...
There are other (more recent?) ones here:
http://linux-ip.net/articles/Traffic-Control-HOWTO/scripts.html

JD

Hi,
I'm using a script:

#!/bin/bash
NETZWERK_DEVICE="eth0"
OUT_REMOTE_SPEED_MAX="7500kbit"
OUT_LOCAL_SPEED_MAX="80000kbit"
OUTGOING_SPEED_3="$1"
INCOMING_SPEED_1="$1"
INCOMING_SPEED_2="200kbit"


/sbin/tc qdisc del dev ${NETZWERK_DEVICE} root 2> /dev/null

/sbin/tc qdisc add dev ${NETZWERK_DEVICE} root handle 1:0 htb default 1

/sbin/tc class add dev ${NETZWERK_DEVICE} parent 1:0 classid 1:1 htb 
rate ${OUT_REMOTE_SPEED_MAX}

This is OK in behavior.

Best regards
Helmut Drodofsky

Viele Gr??e
i.V. Helmut Drodofsky
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Am 04.02.2013 05:28, schrieb Bent Terp:
> Hi all,
>
> I tried last week to do traffic shaping on a production system,
> object of the exercise was simply to throttle the outgoing traffic.
>
> tc qdisc add dev eth4 root tbf rate 300mbit burst 300kb latency 50ms
>
> But the server became rather instable, crashing repeatedly without
> anything in the logs.
>
> Can anybody spot glaring mistakes in the tc command above,
> or tell me what I should have done instead?
>
> with kind regards,
>    Bent Terp
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos