strace方法：
strace XXX -o ttt --- 跟踪XXX执行过程调用的系统调用，结果保存到ttt文件
strace -c XXX --- 跟踪XXX每次调用系统调用耗费时长
strace -f XXX --- 跟踪XXX所有进程包括子进程的系统调用
strace -e trace=open,write XXX ---跟踪XXX执行过程调用的open、write系统调用
strace -e trace=network -p 24567 ---跟24567进程所有与网络有关的系统调用
ltrace方法：
ltrace –s XXX --- 跟踪系统调用和库函数调用
ltrace –e strcpy,strlen XXX --- 跟踪进程调用的strcpy、strlen两种库函数
ltrace -l /lib64/librt.so.1 XXX --- 跟踪XXX调用的指定动态库中的库函数
valgrind方法：
默认没有安装，必须手工安装该工具。
valgrind --tool=memcheck --trace-children=yes XXX
--- 使用valgrind的memcheck工具对XXX命令执行内存检测。
memcheck
Detects memory errors. It helps you tune your programs to behave correctly.
cachegrind
Profiles cache prediction. It helps you tune your programs to run faster.
callgrind
Works in a similar way to cachegrind but also gathers additional cache-profiling information.
exp-drd
Detects thread errors. It helps you tune your multi-threaded programs to behave correctly.
helgrind
Another thread error detector. Similar to exp-drd but uses different techniques for problem analysis.
massif
A heap profiler. Heap is an area of memory used for dynamic memory allocation.This tool helps you tune your program to use less memory.
lackey
An example tool showing instrumentation basics