openresty-systemtap安装使用

1.系统信息
[root@localhost home]# uname -a
Linux localhost.localdomain 3.10.0-862.3.2.el7.x86_64 #1 SMP Mon May 21 23:36:36 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

[root@localhost home]# cat /etc/redhat-release 
CentOS Linux release 7.4.1708 (Core) 

2.查看并安装内核调试信息包

[root@localhost home]# stap-prep

3.安装systemtap和systemtap-runtime

[root@localhost home]#yum install systemtap systemtap-runtime

4.测试是否安装成功

[root@localhost home]#stap -v -e 'probe vfs.read {printf("read performed\n"); exit()}'

Pass 1: parsed user script and 473 library scripts using 235992virt/48572res/3292shr/45536data kb, in 720usr/40sys/751real ms.
Pass 2: analyzed script: 1 probe, 1 function, 7 embeds, 0 globals using 394712virt/202628res/4700shr/204256data kb, in 2510usr/610sys/3119real ms.
Pass 3: using cached /root/.systemtap/cache/90/stap_90a149468819971840c7acecdbc4b54c_2797.c
Pass 4: u

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