1. A computer-implemented method, comprising: receiving, by a processor, event records collected by a performance monitoring unit (PMU) during event tracing; associating, by the processor, the event records with corresponding operating system information observed during the event tracing; analyzing, by the processor, the event records to identify shared cache line utilization; determining, by the processor based on the analyzing, whether a memory address of a cache line used by an event record was used by another event record that is a load event when the event record is a store event; and generating, by the processor, a shared cache line utilization report in view of the analyzing.