第28章 Analyzing system performance with eBPF

Procedure

1. Install the bpftrace package:

   $ sudo dnf install bpftrace

2. Run the test:

   $ sudo bpftrace -e 'tracepoint:raw_syscalls:sys_enter { @ = count(); } interval:s:1 { print(@); clear(@); }'

   This command displays a high-level overview of system activity by observing the rate of system calls made.

   You are now ready to use bpftrace. You can explore example scripts located at /usr/share/bpftrace/tools/, learn scripts online or create your own scripts to trace events and analyze system behavior.