Investigating System Performance for Devops Using Kernel Tracing - Jérémie Galarneau, EfficiOS Inc.

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Presented at LinuxCon 2016 by

Jérémie Galarneau

When faced with a sporadic problem, our first reflex is to capture as much Data as possible. Kernel tracing is a great tool to accomplish this. However, it generates traces that only speak to kernel experts. We present a workflow based on the lttng-analyses project to extract meaningful metrics from kernel traces. This information can then be used to drill down to the root cause of a performance issue. The problem classes covered include latency, throughput and usage of I/O, interrupts, scheduling, system calls, CPU, and memory. We also cover the integration between lttng-analyses and Trace Compass, which bridges the gap between metrics analysis and interactive navigation within the traces.