====== Proc - Process Status file ======

The **/proc/<PID>/stat** file contains detailed information about the process itself.  Its fields are explained here:

==== Contents of the stat files (as of 2.6.30-rc7) ====

^Field^Content^
|pid|Process id.|
|tcomm|Filename of the executable.|
|state|State (R is running, S is sleeping, D is sleeping in an uninterruptible wait, Z is zombie, T is traced or stopped).|
|ppid|Process id of the parent process.|
|pgrp|pgrp of the process.|
|sid|Session id.|
|tty_nr|tty the process uses.|
|tty_pgrp|pgrp of the tty.|
|flags|Task flags.|
|min_flt|Number of minor faults.|
|cmin_flt|Number of minor faults with child's.|
|maj_flt|Number of major faults.|
|cmaj_flt|Number of major faults with child's.|
|utime|User mode jiffies.|
|stime|Kernel mode jiffies.|
|cutime|User mode jiffies with child's.|
|cstime|Kernel mode jiffies with child's.|
|priority|Priority level.|
|nice|Nice level.|
|num_threads|Number of threads.|
|it_real_value|Obsolete, always 0.|
|start_time|Time the process started after system boot.|
|vsize|Virtual memory size.|
|rss|Resident set memory size.|
|rsslim|Current limit in bytes on the rss.|
|start_code|Address above which program text can run.|
|end_code|Address below which program text can run.|
|start_stack|Address of the start of the stack.|
|esp|Current value of ESP.|
|eip|Current value of EIP.|
|pending|Bitmap of pending signals.|
|blocked|Bitmap of blocked signals.|
|sigign|Bitmap of ignored signals.|
|sigcatch|Bitmap of catched signals.|
|wchan|Address where process went to sleep.|
|0|Place holder.|
|0|Place holder.|
|exit_signal|Signal to send to parent thread on exit.|
|task_cpu|Which CPU the task is scheduled on.|
|rt_priority|Realtime priority.|
|policy|Scheduling policy (man sched_setscheduler).|
|blkio_ticks|Time spent waiting for block IO.|
|gtime|Guest time of the task in jiffies.|
|cgtime|Guest time of the task children in jiffies.|