红帽全球峰会43.13. 软中断的服务时间概述
softirqs 工具总结了服务软中断（soft IRQ）所花费的时间，并将这个时间显示为总计或直方图分布。这个工具使用 irq:softirq_enter 和 irq:softirq_exit 内核追踪点，是一个稳定的追踪机制。
流程
输入以下命令启动追踪
soft irq事件时间：# /usr/share/bcc/tools/softirqs Tracing soft irq event time... Hit Ctrl-C to end. ^C SOFTIRQ TOTAL_usecs tasklet 166 block 9152 net_rx 12829 rcu 53140 sched 182360 timer 306256- 按 Ctrl+C 停止追踪过程。
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