Use this page to initialize variables at the schedule level. When you initialize variables at the schedule level, all the user groups in the schedule use the variable initial values, except those for which a specific value is defined.
Both choices and the default setting limit the size of the test log and reduce the total time to run the schedule by significantly reducing the test log transfer time at the end of a test.
To reduce transfer times and the likelihood of running out of disk space, sample information from a very small subset of users; smaller even than the default of 5 users per user group. A fixed sampling rate samples the same number of virtual users from each group. A percentage sampling rate samples a percentage of virtual users from each group, but guarantees that at least one user is sampled from a group.