[Click] Queue Capacity and RatedUnqueue

[Eddie Kohler]

Giovanni,

Do you still get drops with a simple "Unqueue" (not RatedUnqueue)?

The rate on that RatedUnqueue is pretty slow: 200,000 packets per second.  It's 
not surprising that your traffic generators can generate more load than that.

Eddie



Giovanni Giardinelli wrote:
> Hi Eddie,
> 
> I use three ethernet Gbit
> 
> In order to generate packets, I use  the element FastUDPSource.
> 
> tester's configuration is the following:  
> 
> src2::FastUDPSource (204800,8192000,64,00:30:48:28:ba:28,192.168.10.145,
> 1234,00:30:48:28:ba:ae,192.168.10.209,1234) 
> -> SetIPDSCP(46)
> -> ToDevice(eth2);
> 
> src3::FastUDPSource (20000,800000,64,00:30:48:28:ba:29,192.168.10.225,
> 1234,00:30:48:28:ba:af,192.168.10.209,1234) 
> -> SetIPDSCP(0)
> -> ToDevice(eth3);
> 
> FromDevice(eth0) 
> -> c0 :: Classifier(12/0806 20/0001,-);
> 
> c0[0] 
> -> ar0 :: ARPResponder(192.168.10.209 00:07:e9:1f:b2:50)
> -> SimpleQueue
> -> ToDevice(eth0);
> 
> c0[1]
> -> cf0:: Counter() 
> -> Discard();
> 
> 
> The principal part of the configuration of the Router is the following:  
> 
> c0 :: Classifier(12/0806 20/0001,
>                   12/0806 20/0002,
>                   12/0800,
>                   -);
> 
> c2 :: Classifier(12/0806 20/0001,
>                   12/0806 20/0002,
>                   12/0800,
>                   -);
> 
> c3 :: Classifier(12/0806 20/0001,
>                   12/0806 20/0002,
>                   12/0800,
>                   -);
> 
> src0 :: PollDevice(eth0)
> -> [0]c0;
> src2 :: PollDevice(eth2) 
> -> [0]c2;
> src3 :: PollDevice(eth3) 
> -> [0]c3;
> 
> .............
> .............
> .............
> 
> c2[2] 
>       -> Paint(3) 
>       -> Strip(14)
>       -> CheckIPHeader(1.255.255.255)
>       -> ipc2 :: IPClassifier(ip dscp 46, ip dscp 0); 
> 
> c3[2] 
>       -> Paint(4) 
>       -> Strip(14)
>       -> CheckIPHeader(1.255.255.255)
>       -> ipc3 :: IPClassifier(ip dscp 46, ip dscp 0);
> 
> qef :: SimpleQueue(32000);
> 
> ipc2[0] 
> -> qef; 
> 
> qef
> -> RatedUnqueue(204800) 
> -> rt;
> 
> ...........
> ...........
> ...........
> 
> PokeHandlers( wait 5,
>   read qef.length,
>   read qef.droppes
>   loop
>   )
> 
> 
> The qef.lenght=32000
> 
> the qef.droppes increases in continuation
> 
> 
> 
> Thanks
> 
> Giovanni
> 
> 
> 
> ----- Original Message ----- 
> From: "Eddie Kohler" <kohler at CS.UCLA.EDU>
> To: "Giovanni Giardinelli" <giovanni.giardinelli at tin.it>
> Cc: <click at amsterdam.lcs.mit.edu>
> Sent: Friday, June 18, 2004 11:04 PM
> Subject: Re: [Click] Queue Capacity and RatedUnqueue
> 
> 
> 
>>Giovanni
>>
>>Please send a more complete configuration.  What are you using to 
>>generate packets?
>>
>>
>>Eddie
>>
>>On Jun 18, 2004, at 2:06 PM, Giovanni Giardinelli wrote:
>>
>>
>>>Hi all,
>>>I'm doing some tests for a simple router architecture which have to 
>>>perform differentiated service between two kind of flows.
>>>When I use a Queue element and a RatedUnqueue element in this way:
>>>SimpleQueue(32000) -> RatedUnqueue(X), where X is a certain rate 
>>>value, even if the tester emission rate is <=X, the queue
>>>always overflow, causing a lot of packets to be dropped. I use 64 
>>>bytes packets.
>>>I have two question:
>>>1) Why the click in my machine not allow me to fix a CAPACITY 
>>>parameter value for the queue greater than 32000 packets?
>>>2) Why the RatedUnqueue element seems to not work correctly?
>>>
>>>_______________________________________________
>>>click mailing list
>>>click at amsterdam.lcs.mit.edu
>>>https://amsterdam.lcs.mit.edu/mailman/listinfo/click
>>