Synchronizing Timer

Part of the Timers category. Also documented in context in the full Component Reference.

The purpose of the SyncTimer is to block threads until X number of threads have been blocked, and then they are all released at once. A SyncTimer can thus create large instant loads at various points of the test plan.

Name	Required	Description
Name	No	Descriptive name for this timer that is shown in the tree.
Number of Simultaneous Users to Group by	Yes	Number of threads to release at once. Setting it to 0 is equivalent to setting it to Number of threads in Thread Group.
Timeout in milliseconds	No	If set to 0, Timer will wait for the number of threads to reach the value in “Number of Simultaneous Users to Group”. If superior to 0, then timer will wait at max “Timeout in milliseconds” for the number of Threads. If after the timeout interval the number of users waiting is not reached, timer will stop waiting. Defaults to 0

Note

If timeout in milliseconds is set to 0 and number of threads never reaches “Number of Simultaneous Users to Group by” then Test will pause infinitely. Only a forced stop will stop it. Setting Timeout in milliseconds is an option to consider in this case.

Note

Synchronizing timer blocks only within one JVM, so if using Distributed testing ensure you never set “Number of Simultaneous Users to Group by” to a value superior to the number of users of its containing Thread group considering 1 injector only.

Related

• Timers, Think Time & Pacing
• Thread Calculator
• Full Component Reference
• Functions and Variables