運行腳本
[root@BL480-64 jinyz]#stap topexe.stp
輸出結(jié)果：

????????????????? SYSCALL????? COUNT
???????????????????? find???? 101910
?????????????????? oracle?????? 1562
????????????? modclusterd?????? 1184
??????????????????? pcscd??????? 535
????????????????? clustat???????? 77
????????? gdm-rh-security???????? 72
?????????????????? stapio???????? 52
?????????????????? iscsid???????? 40
????????????????????? gpm???????? 21
?????????????? irqbalance???????? 20
???????????????????? sshd???????? 16
??????????????? automount???????? 15
?????????????????? mysqld???????? 11
?????????????? rpc.idmapd???????? 10
???????????????? sendmail????????? 7
??????????????????? ricci????????? 5
?????????????? gam_server????????? 5
???????????????????? init????????? 4
?????????????????? python????????? 1
輸出結(jié)果證明find命令調(diào)用最多，下一步find調(diào)用了哪些系統(tǒng)函數(shù)？

3、?使用topprobe.stp腳本，根據(jù)應(yīng)用程序名，列出哪個系統(tǒng)函數(shù)調(diào)用最多
[root@BL480-64 jinyz]# stap topprobe.stp
輸出結(jié)果
????????????????? SYSCALL????? COUNT
???????????????? sys_open???? 104281
??????????????? sys_close???? 104280
???????????? sys_getdents????? 70778
?????????????? sys_fchdir????? 69514
???????????? sys_newfstat????? 34766
????????????? sys_newstat????? 34759
???????????? sys_newlstat????? 34757
??????????????? sys_fcntl????? 34756
????????????????? sys_brk???????? 35
???????????????? sys_mmap???????? 24
??????????????? sys_write???????? 12
???????????????? sys_read????????? 9
???????????? sys_mprotect????????? 8
?????????????? sys_munmap????????? 5
??????????????? sys_uname????????? 2
?????????????? sys_access????????? 2
??????????? sys_faccessat????????? 2
??????????????? sys_ioctl????????? 2
?????????? sys_arch_prctl????????? 1
?????????????? sys_mremap????????? 1
--------------------------------------------------------------
輸出結(jié)果顯示sys_open最多，下一步跟蹤find的系統(tǒng)調(diào)用堆棧

轉(zhuǎn)載于:https://www.cnblogs.com/jinyz/archive/2013/04/27/3047431.html

總結(jié)

以上是生活随笔為你收集整理的研究性能测试工具之systemtap入门指南（四）的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯，歡迎將生活随笔推薦給好友。