排序
shift+p, 按CPU占用量降序显示
shift+m, 按内存占用量降序显示
名词解释
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 and pages that have been mapped but not used.
RES -- Resident size (kb)
The non-swapped physical memory a task has used.
SHR -- Shared Mem size (kb)
The amount of shared memory used by a task. It simply reflects
memory that could be potentially shared with other processes.