Linux 下查看一个进程的status,其中 Vm打头的那些项,每项都是啥意思?

# cat /proc/998/status
cat /proc/998/status
Name: mediaserver
State: S (sleeping)
Tgid: 998
Pid: 998
PPid: 1
TracerPid: 0
Uid: 1013 1013 1013 1013
Gid: 1000 1000 1000 1000
FDSize: 32
Groups: 1003 1005 1006 3001 3002 3003
VmPeak: 60512 kB
VmSize: 30456 kB
VmLck: 0 kB
VmHWM: 14768 kB
VmRSS: 5404 kB
VmData: 9916 kB
VmStk: 84 kB
VmExe: 4 kB
VmLib: 12688 kB
VmPTE: 104 kB
Threads: 9
SigQ: 0/1952
SigPnd: 0000000000000000
ShdPnd: 0000000000000000
SigBlk: 0000000000000000
SigIgn: 0000000000000000
SigCgt: 00000000000094e8
CapInh: 0000000000000000
CapPrm: 0000000000000000
CapEff: 0000000000000000
CapBnd: fffffffffffffeff
voluntary_ctxt_switches: 594
nonvoluntary_ctxt_switches: 310