[Click] Click SMP performance

[louati]

Hi Robert,

I have installed click SMP (with --enable-multithread) on a multi-processor
plateform (4 CPU Intel XEON(TM) Processor MP 1.50GHz, 2 G RAM ).
So, I have really 4 CPU Xeon, and with the Hyper-Threading Technology , i
can obtain 8 logical processors.

The Pentium 4 uniprocessor (2,4 GHZ, RAM 2G DDR) is a different machine and
not the same SMP machine with 3 CPUs.


I use "Intel PRO/1000 MT Dual Port Server Adapter" gbit cards. They are 64
bits wide.

I have installed 2 " Dual Port " gbit cards on each machine (uniprocessor
and multi-processor). So, each card contains 2 ports Gbit. In the result, I
obtain 4 cards gbits on each machine.

The PCI bus of the multi-processor :

  a.. PCI Bus width : 64 bit
  b.. PCI Bus Speed : 100 Mhz
The PCI bus of the uniprocessor :

  a.. PCI Bus width : 32 bit  =>  So, I have 64 wide card sitting in a 32
bit slot.
  b.. PCI Bus Speed : 33 Mhz
Firstly, i try to use this two machines as a generator source:

When I run udpgenerator.click on the uniprocessor, I am using click compiled
for uniprocessor. For the multi-processor I am using click compiled for SMP.

So, I try to generate 600 000 UDP packets (64 bytes) per second with this
click configuration :

// Generated by make-udpgen.pl

ar :: ARPResponder(157.159.100.30  00:07:E9:1A:B7:CA);

udph :: UDPIPEncap(157.159.100.30, 1234, 157.159.103.25, 1234, 1);

ethh :: EtherEncap(0x800, 00:07:E9:1A:B7:CA, 00:07:E9:1A:Ba:dd);

c0 :: Classifier(12/0806 20/0001, -);

pd :: PollDevice(eth1);

td :: ToDevice(eth1);

out :: Queue(8192) -> td;

tol :: ToHost;

pd -> [0]c0;

c0[0] -> ar -> out;

c0[1] -> tol;

rs :: RatedSource(\<00000000111111112222222233333333444444445555>, 600000 ,
600000);

rs  -> udph

    -> ethh

     -> AverageCounter

      -> out;

// ticket for RatedSoure must be smaller so it won't overflow the queue

ScheduleInfo(td 1, pd .1, rs .1);



The maximum throughput it can generate by the multiprocessor is 230 000 p/s
and i obtain 450 000 p/s for the uniprocessor.



Now, when i try to use this two machines as a router:

The Maximum loss-free forwarding rates (MLFFR) of the uniprocessor is : 422
000 p/s (64 bytes)   (The source generates 600 000 p/s)

And the MLFFR of the multiprocessor is : 360 000 p/s (64 bytes) !!!



what's the problem with my click SMP configuration?

Thank you very much for your help

Wajdi



----- Original Message -----

From: "Robert Morris" <rtm at amsterdam.lcs.mit.edu>
To: "louati" <wajdi.louati at int-evry.fr>
Cc: <click at amsterdam.lcs.mit.edu>
Sent: Thursday, November 20, 2003 5:08 PM
Subject: Re: [Click] Click SMP performance


> Louati,
>
> Can you send us a copy of udpgenerator.click?
>
> What kind of Ethernet cards are you using? How many ethernet cards?
> What kind of PCI -- 64 bit? 66 mHz? What kind of memory system?
>
> Is your Pentium 4 uniprocessor the same SMP machine with 3 CPUs
> disabled, or a different machine?
>
> When you run udpgenerator.click on the uniprocessor, are you using
> click compiled for uniprocessor or SMP? That is, did you compile with
> --enable-multithread?
>
> Why do you believe that you should be able to generate 600,000 UDP
> packets per second?
>
> Thanks,
> Robert
>

> > From: "louati" <wajdi.louati at int-evry.fr>
> > To: <click at amsterdam.lcs.mit.edu>
> > Date: Thu, 20 Nov 2003 16:53:54 +0100
> > Subject: [Click] Click SMP performance
> >
> > Hi all,
> >
> > I have installed click SMP on a multi-processor plateform (4 CPU Intel =
> > XEON(TM) Processor MP 1.50GHz).
> >
> > I try to generate 600 000 UDP packets per second with a click =
> > configuration (udpgenerator.click)
> >
> > So if i run :
> >
> > Click-install -t 4 udpgenerator.click
> >
> > The maximum throughput it can generate is 230 000 p/s ! ! !
> >
> > When i try to install the same click configuration on Pentium 4 =
> > Uniprocessor 1,5 GHZ ; it can generate 430 000 p/s (max).
> >
> > I think that i have some problemes with Click SMP performance !  =20
> >
> > Can you help me !
> >
> > Think you very much
> >
> > Wajdi
> >
>