Linux Performance Monitoring

View I/O:

1, Top

Us:is meaning of "user CPU time"
Sy:is meaning of "system CPU Time"
Ni:is meaning of "nice CPU time"
Id:is Meaning of "idle"
Wa:is meaning of "iowait"
Hi:is meaning of "hardware IRQ"
Si:is meaning of "software IRQ"
St:is meaning of "steal time"

The Chinese translation is:

US user space consumes CPU percent
SY kernel space consumes CPU percentage
CPU percentage of processes that have changed priority in NI user process space
ID Idle CPU percent
WA waits the percentage of CPU time for input and output
Hi Hardware Interrupts
Si software interrupts

2, Iotop

3, Ps-eo stat,pid,cmd, view d status process, problem

4,lsof-p PID See what file the process is reading

5. View disk read/write I/O Iostat

6,sar-n DEV View network card traffic, Iptraf command is a graphical monitoring IP traffic command

7, Sar-u CPU

8, Sar-r Memory

9, view the memory that a process is using, the virtual memory information that can be executed, CAT/PROC/PID/STATM, output 5 digits

10,swapon-s viewing Swap partition usage

One, Ethtool eth0, show eth NIC configuration

Linux Performance Monitoring