Dear Sir, The question exactly arises from here: How can I monitor the impact of these several settings on the network performance? How can I monitor the size of the queues, log the packets dropped ,....? I would be thankful if you recommend me some tools or APIs for doing these tasks. Best Regards Hoomaan Naimi Afranet Network Administrator ----- Original Message ----- From: "bert hubert" <ahu@xxxxxxx> To: "Hoomaan Naimi" <naimi@xxxxxxxxxxx> Sent: Monday, October 23, 2000 1:59 PM Subject: Re: [LARTC] tc troubles > On Mon, Oct 23, 2000 at 01:45:22PM +0330, Hoomaan Naimi wrote: > > Hi all, > > Its a while we are trying to use "tc" for bandwidth control. But each time > > we apply tc rules to the network, we experience a lot of service > > degradation. The usage we are mostly concerned about, is bandwidth control > > of a group of IP addresses. We mark that subnet with IPChains and then apply > > the tc rules. These are the rules applied to eth5 in order to limit the > > uplink of packets marked "7" by ipchains: > > Try reading the source of CBQ.init, which can set up rules for you. I miss a > lot of settings in your output, like weight, cell size etcetera. This might > lead to a bad configuration. > > Regards, > > bert hubert > > > # /sbin/tc class sh dev eth5 > > class cbq 40: root rate 100Mbit (bounded,isolated) prio no-transmit > > class cbq 40:1 parent 40: rate 100Mbit prio no-transmit > > class cbq 40:300 parent 40:1 leaf 8025: rate 200Kbit (bounded) prio 5 > > # /sbin/tc qdisc sh dev eth5 > > qdisc tbf 8025: rate 200Kbit burst 25Kb lat 1us > > qdisc cbq 40: rate 100Mbit (bounded,isolated) prio no-transmit > > [root@xxxxx naimi]# /sbin/tc filter sh dev eth5 > > filter parent 40: protocol ip pref 1 fw > > filter parent 40: protocol ip pref 1 fw handle 0x7 classid 40:300 > > filter parent 40: protocol ip pref 80 u32 > > filter parent 40: protocol ip pref 80 u32 fh 800: ht divisor 1 > > filter parent 40: protocol ip pref 80 u32 fh 800::800 order 2048 key ht 800 > > bkt 0 flowid 40:100 > > > > As I mentioned, the service degraded severely: pig time of internet sites > > increased about 300-500 ms!! > > Does anybody know what is wrong with my configuration? > > > > Best Regards > > Hoomaan Naimi > > Afranet Network Administrator > > > > > > > > > > _______________________________________________ > > LARTC mailing list / LARTC@xxxxxxxxxxxxxxx > > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://ds9a.nl/2.4Routing/ > > > > -- > PowerDNS Versatile DNS Services > Trilab The Technology People > 'SYN! .. SYN|ACK! .. ACK!' - the mating call of the internet
