TOP中各项值的意义

top - 02:06:59 up 4 days, 17:14, 2 users, load average: 0.00, 0.00, 0.00
Tasks: 62 total, 1 running, 61 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.2% us, 0.3% sy, 0.0% ni, 97.8% id, 1.7% wa, 0.0% hi, 0.0% si
Mem: 515144k total, 317624k used, 197520k free, 66068k buffers
Swap: 1048120k total, 12k used, 1048108k free, 179632k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
13737 root 17 0 1760 896 1540 R 0.7 0.2 0:00.05 top
238 root 5 -10 0 0 0 S 0.3 0.0 0:01.56 reiserfs/0

PID: Process identification. （进程号）
USER: Name of the user who owns (and perhaps started) the process.
PRI: Priority of the process (进程优先级）
NI: Niceness level
SIZE: Amount of memory (code+data+stack), in KB, being used by the process.（总的内存数，KB）
RSS: Amount of physical RAM used, in KB.（用去的物理内存）
SHARE: Amount of memory shared with other processes, in KB.（共享内存数）
STAT: State of the process: S=sleeping, R=running, T=stopped or traced, D=interruptible sleep, Z=zombie.
%CPU: Share of the CPU usage (since the last screen update).
%MEM: Share of physical memory.
TIME: Total CPU time used by the process (since it was started).
COMMAND: Command line used to start the task (including parameters).