top 命令显示隐藏参数列

top 命令显示隐藏参数列

例如 键入top，然后键入f，然后键入s，回车后显示 DATA列

o: VIRT -- Virtual Image (kb)

The total amount of virtual memory used by the task. It includes

all code, data and shared libraries plus pages that have been

swapped out.

VIRT = SWAP + RES.

p: SWAP -- Swapped size (kb)

The swapped out portion of a task’s total virtual memory image.

q: RES -- Resident size (kb)

The non-swapped physical memory a task has used.

RES = CODE + DATA.

r: CODE -- Code size (kb)

The amount of physical memory devoted to executable code, also

known as the ’text resident set’ size or TRS.

s: DATA -- Data+Stack size (kb)

The amount of physical memory devoted to other than executable

code, also known as the ’data resident set’ size or DRS.

这里面的RES就是 ps -lfp 产生的 RSS 这个参数（见另一篇博文AIX下进程内存分析）