1#!/usr/bin/python 2# Copyright (c) PLUMgrid, Inc. 3# Licensed under the Apache License, Version 2.0 (the "License") 4 5from bcc import BPF 6from time import sleep 7 8b = BPF(src_file="task_switch.c") 9b.attach_kprobe(event_re="^finish_task_switch$|^finish_task_switch\.isra\.\d$", 10 fn_name="count_sched") 11 12# generate many schedule events 13for i in range(0, 100): sleep(0.01) 14 15for k, v in b["stats"].items(): 16 print("task_switch[%5d->%5d]=%u" % (k.prev_pid, k.curr_pid, v.value)) 17