Transaction step collection method
The application monitoring agent provides linear and circular collection methods.
Linear collection
Individual transaction traces cannot collect steps indefinitely. Store trace steps in buffers of limited length for each transaction. For each transaction, the maximum number of steps that can be collected is specified as an option.
-
whatap.profile_step_max_count
Default
1024
Maximum number of steps that can be collected.
-
whatap.profile_step_normal_count
Default
800
Number of steps that are generally collected without any restrictions.
-
whatap.profile_step_heavy_count
Default
1000
If the normal count is exceeded, only the steps with slow response time and the active stack steps are collected.
-
whatap.profile_step_heavy_time
Default
100
The reference time to collect steps within heavy count is
whatap.profile_step_heavy_time
.If the number of steps in the profile being collected exceeds the heavy count, only active stacks are collected. Even in this case, the maximum number of steps does not exceed
whatap.profile_step_max_count
.
Circular collection
Linear collection collects the front part of the trace and discards the later part, if it exceeds the buffer size. On the other hand, circular collection discards the front step.
circular_profile_enabled=true
The buffer size is set in whatap.profile_step_max_count
.
whatap.profile_step_max_count=1024