OpenSTA

Further investigation shows there are two distinct issues with time
limits;
1) Occasionally when time limit expires, VU count drops to the single
digits but the task group and subsequently the test does not end.
2) When setting time limit > 23, it is set to the new number modulo 24.
(e.g. 24 become 0, 25 becomes 1, etc.)

I encounter this problem frequently. Using a single task group, I run a
one hour test where I introduce users in batches of N/4 users with ramp up
time of 5 minutes and time between batches of 10 minutes. At the end of one
hour, most of the VUs are stopped, but very often I seen from 1 to 3 VUs
"stuck" which prevents the test from ending properly. Stopping the test
manually (black square button in Commander) terminates the test, but half
the time the HTTP* reports (e.g. HTTP monitored bytes/sec) graphs do not
appear in the test results.