Under the Covers with Xperf

摘要

One of Xpert's more powerful features is stackwalking, which lets you capture and view functions executed during a specific time period and find processor-intensive operations. Stackwalking shows you where processor time is spent and the path of a process's execution that led up to the expensive operation. Xperf can also help reveal the impact of configuration changes on a system by collecting aggregate data and parsing it for information about performance or resource-consumption patterns. Here I'll show you how to capture a stackwalking trace and interpret the data.