How many concurrent requests can WAS support?

Hi all,
  I want to know what is the maximum number of concurrent users/requests that can WAS6.4(latest pack) support? We are looking at around 40,000 concurrent users.. Is this feasible? If yes what is the max possible?
Regards,
Harsh
PS: Would appreciate a prompt response:)

Hi Harsh,
I was just reading those notes that Alexander found as well and I would have to agree with him the that webdispatcher could handle the 10,000. However you have to remember that if you are running a BSP or other application located on a WAS server you have the constraints there as well.
Now I've just done some load testing with some stress tools.
500 concurrent connections on a Linux server dual processor 4 GB RAM and I started to see some major performance problems. Any higher and the system or at least the apps would have started to hang I think.
So with 40,000 connections even with loadbalancing and application instances you are going to need some major hadware to handle the connections.
Now back to your other questions.
The WAS and the R/3 are built on the BC level, which means  the basic connections are made at that level and effected by these parameters. With a 640 Java Stack only then you have the J2EE engine only in which case the BC level is basically not there at least not like the ABAP level.
Now if you have a single JSP page deployed on your J2EE and not making any RFC calls to your backend then you only have to worry about the dispatcher connections. However, from my understanding if you make those RFC calls then you have the connections of the backend to worry about as well.
Now if you can gives a bit more detail of what the connections (all these 40,000 are doing) then perhaps we can come up with some alternatives that will help out.
As for being intimidated, don't be, I'm learning this from searching as we go along as well

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