probe::scheduler.tick - Linux

Overview

probe::scheduler.tick is a Linux command used for debugging and analyzing the performance characteristics of Linux’s task scheduler. It provides insights into how the scheduler allocates CPU resources to running processes and threads.

Syntax

probe::scheduler.tick [-h] [-i INTERRUPT] [-e EVENT] [-a] [-c CPU]

Options/Flags

  • -h: Display help message and exit.
  • -i INTERRUPT: Specify the interrupt number of the CPU you want to monitor. (Default: 0)
  • -e EVENT: Specify the scheduling event you want to monitor. (Default: all)
  • -a: Aggregate results across all CPUs.
  • -c CPU: Specify the CPU number you want to monitor. (Default: all)

Examples

Monitor scheduler activity on CPU 3:

probe::scheduler.tick -c 3

Monitor process migration events across all CPUs:

probe::scheduler.tick -e process_migration -a

Common Issues

  • Ensure that Tracepoints are enabled in the Linux kernel before using this command.
  • If you encounter permission errors, check that you have root or sudo privileges.

Integration

probe::scheduler.tick can be combined with other tools for in-depth performance analysis, such as:

  • perf: Monitor system performance and identify bottlenecks.
  • tcpdump: Analyze network traffic and correlate it with scheduler events.

Related Commands