同步释放请求: 模拟同时访问,看吞吐量和响应时间
Synchronizing Timer
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. https://jmeter.apache.org/usermanual/component_reference.html#Synchronizing_Timer