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How Many Users Can Be Emulated by WAPT?
How Many Users
Can Be Emulated by WAPT?
An estimated number of simultaneously acting
virtual users emulated by WAPT
for the following standard hardware configuration:
Intel Pentium IV 2.4 GHz PC, 512MB RAM
should stand at about 2000.
Note that you should use Windows 2000/XP/2003 operation
system. For Windows 98/Me you are limited to 100 virtual users because of restriction on amount of
sockets.
The number of emulated users depends most of all on the typical time between requests for the
tested system. If response time is very short, the number of simulated users should be less than 1000.
If response time or time between requests is rather long, the number of users can be more. Actually,
you will be able to emulate up
to 2000 simultaneously acting users.
Also note that each virtual user consumes RAM (Random-Access Memory), so it cannot be less than the
maximum size of response. Additionally RAM
is used for test run results.
If the size of maximum response is about
100KB and each virtual user consumes 100KB for test results, then you will need about 200MB
of RAM to simulate 1000 virtual users. To know the amount of available memory on your computer, see
Windows Task Manager -> Performance -> Physical Memory -> Available.
Additional information regarding hardware bottlenecks:
Network bandwidth
Note that even 500 "quick" virtual users
could reach 100Mb network bandwidth limit.
Processor
If you simulate "quick" and/or "complicated" virtual users,
then your processor should meet high requirements.
