運行腳本
[root@BL480-64 jinyz]#stap topexe.stp
輸出結果：

????????????????? 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
輸出結果證明find命令調用最多，下一步find調用了哪些系統函數？

3、?使用topprobe.stp腳本，根據應用程序名，列出哪個系統函數調用最多
[root@BL480-64 jinyz]# stap topprobe.stp
輸出結果
????????????????? 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
--------------------------------------------------------------
輸出結果顯示sys_open最多，下一步跟蹤find的系統調用堆棧

轉載于:https://www.cnblogs.com/jinyz/archive/2013/04/27/3047431.html

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