EVENT SUMMARY MODE FOR TRACING SYSTEMS

Reducing resource requirements in an instrumented process tracing system, a process having a top instrumented process and a nested hierarchy of instrumented sub-processes. A computer receives a plurality of instrumented process data from the top process and the sub-processes, each datum including a process identifier, a process type, a top process identifier, and a process completion elapsed time. Based on the computer determining that the process identifier and the top process identifier in the datum received are equivalent: if the process completion elapsed time in the datum received is determined to be less than a threshold value, the computer writes a summary of the plurality of instrumented process data to a data store, and if the process completion elapsed time in the datum received is determined to not be less than the threshold value, the computer writes the plurality of instrumented process data to the data store.