执行该工具会输出系统的网络IO，CPU，内存，磁盘IO，以及系统设置信息，示例
./systool
[time] 16:34:49
[loadavg]
lavg1 lavg5 lavg15 running/total last_pid
1.25 1.16 1.10 3/977 361123
[sys limits]
File Handle Limit: Soft=65535, Hard=65535
Max Process/Thread Count: Soft=127314, Hard=127314
Swap: Total=0 KB, Free=0 KB
[cpu]
Number of CPU cores: 16
[mem]
total mem: 33435029504 bytes (31.14 GB)
[Soft Interrupts]
CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7 CPU8 CPU9 CPU10 CPU11 CPU12 CPU13 CPU14 CPU15
HI: 0 0 0 3 0 0 0 1 0 0 0 0 0 0 0 0
TIMER: 414614 2140475 1361943 1045494 837807 867469 942844 1274911 593833 556297 532507 529932 553454 540665 590431 526852
NET_TX: 0 1 0 3 1 0 1 0 0 0 0 0 0 0 2 0
NET_RX: 13370 27527 22822 18238 16728 17221 14824 3243202 13727 184892 14061 15168 17939 15081 17549 17527
BLOCK: 14342 62885 227192 44095 34122 31675 33098 31126 22577 25345 17978 23693 22172 19726 24227 18997
IRQ_POLL: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
TASKLET: 1 6 14 74 1 2 13 102 0 19192 0 4 1 5 1 5
SCHED: 5258790 4929113 4196276 3849369 3064322 2675791 2485626 2727296 2154482 2171410 2013732 1934854 2017065 1958664 1993159 1948878
HRTIMER: 0 1 1 0 0 0 0 1181 0 1 1 0 0 0 0 0
RCU: 1486715 2880117 2664294 2604614 2268313 2119654 2047808 3614672 1779038 1790868 1717316 1677229 1727225 1677097 1697171 1683012
[IO]
TID COMM READS WRITES R_Kb W_Kb T FILE DIR
361123 clear 2 0 60 0 R xterm x
361120 systool 4 0 4 0 R softirqs /
335343 DefaultDispatch 2 0 15 0 R accepted consentOptions
361123 sh 4 0 1 0 R libc-2.28.so lib64
359624 Action Updater 0 1 0 0 R idea.log log
361122 postgres 1 0 0 0 R pg_filenode.map 1
361122 postgres 1 0 4 0 R PG_VERSION 1
361120 systool 1 0 8 0 R online cpu
359624 Action Updater 2 0 15 0 R accepted consentOptions
361123 sh 3 0 0 0 R clear bin
361120 systool 1 0 1 0 R meminfo /
361123 sh 1 0 0 0 R libdl-2.28.so lib64
361122 postgres 41 0 164 0 R pg_internal.init 1
361120 systool 2 0 2 0 R loadavg /
361120 systool 1 0 0 0 R pid_max kernel
361123 systool 4 0 1 0 R ld-2.28.so lib64
361122 postgres 1 0 0 0 R pg_filenode.map global
361123 systool 3 0 0 0 R bash bin
361122 postgres 8 0 32 0 R pg_internal.init global
360326 Action Updater 0 1 0 0 R idea.log log
[TCP]
TCP Backlog (somaxconn): 128
PID COMM LADDR RADDR RX_KB TX_KB
359963 sshd 10.18.215.118:22 10.18.102.194:52691 0 1
[root@localhost tool]# ./systool --help
Usage: systool [OPTION...]
Trace file reads/writes by process.
USAGE: filetop [-h] [-p PID] [interval] [count]
EXAMPLES:
filetop # file I/O top, refresh every 1s
filetop -p 1216 # only trace PID 1216
filetop 5 10 # 5s summaries, 10 times
-C, --noclear Don't clear the screen
-p, --pid=PID Process ID to trace
-t, --type=TYPE Type of pid to trace
-v, --verbose Verbose debug output
-?, --help Give this help list
--usage Give a short usage message
Mandatory or optional arguments to long options are also mandatory or optional
-C不清理屏幕-p指定进程ID-t指定进程类型,目前支持mysql类型-v输出调试信息
编译需要安装clang及llvm
git clone https://github.com/juhaokan/systool.git
cd systool
make