thambi3

 Profile Answers by thambi3 

• Feb 21st, 2008

 

VuGen provides the facility to use multithreading. This enables more Vusers to be run pergenerator.

If you run each Vuser as a process, then the driver (The Controller uses a driver program (e.g., mdrv.exe, r3vuser.exe) to run your Vusers) program is launched (and loaded) into the memory again and again for every instance of the Vuser. Loading the same driver program into memory uses up large amounts of RAM (random access memory) and other system resources. This limits the numbers of Vusers that can be run on any load generator.

If the Vuser is run as a thread, only one instance of the driver program is loaded into memory for the given number of Vusers (say 100). Each thread shares the memory of the parent driver program, thus enabling more Vusers to be run per generator.

sudeeshna

 Profile Answers by sudeeshna 

• Jun 19th, 2008

 

If Vuser is run as a process, the same driver program is loaded into memory for each Vuser, thus taking up a large amount of memory. This limits the no. of Vuser that can be run on a single generator.

If the Vuser is run as a thread, only one instance of the driver program is loaded into memory for given no. Of VUser. Each thread shares the memory of the parent driver program, thus enabling more Vuser to be run per generator.