8. Configure Virtual Users

8. Configure Virtual Users

Select Virtual User Options from the tree-view.

Figure 4.19. Virtual User Options

Virtual User Options

This displays the Virtual User Options dialog.

Figure 4.20. Virtual User

Virtual User

The values have the following meaning.

Table 4.8. Virtual User Options

Virtual UsersThe number of Virtual Users to create. Note that when running a Timed Workload HammerDB will automatically create an additional Virtual User to monitor the workload.
User Delay(ms)User Delay(ms) defines the time to wait a Virtual User will wait behind the previous Virtual User before starting its test, this is to prevent a login storm with all Virtual Users attempting to login at the same time.
Repeat Delay(ms)Repeat Delay(ms) is the time that each Virtual User will wait before running its next Iteration of the Driver Script. For the TPC-C workload this should be considered as an 'outer loop' to the 'inner loop' of the Total Transactions per User in the TPC-C Driver Script.
IterationsIterations is the number of times that the Driver Script is run in its entirety.
Show OutputShow Output will report Virtual User Output to the Virtual User Output Window, For TPC-C tests this should be enabled.
Log Output to TempWhen enabled this appends all Virtual User Output to a text file in an available temp directory named hammerdb.log
Use Unique Log NameUse a unique identifier for the Log Name.
No Log BufferBy default text log output is buffered in memory before being written, this option writes the log output immediately.
Log TimestampsAdd an additional line of output with a timestamp every time that the log is written to.

Select the Virtual User options, Press OK.