Proc - Stat file

Miscellaneous kernel statistics in /proc/stat


Various pieces of miscellaneous information about kernel activity are available in the /proc/stat file. All of the numbers reported in this file are aggregates since the system first booted. For a quick look, simply cat the file:

cat /proc/stat
 
cpu  2255 34 2290 22625563 6290 127 456 0 0
cpu0 1132 34 1441 11311718 3675 127 438 0 0
cpu1 1123 0 849 11313845 2614 0 18 0 0
intr 114930548 113199788 3 0 5 263 0 4 [... lots more numbers ...]
ctxt 1990473
btime 1062191376
processes 2915
procs_running 1
procs_blocked 0
softirq 183433 0 21755 12 39 1137 231 21459 2263

The very first cpu line aggregates the numbers in all of the other “cpuN” lines. These numbers identify the amount of time the CPU has spent performing different kinds of work. Time units are in USER_HZ (typically hundredths of a second). The meanings of the columns are as follows, from left to right:

The remaining lines are defined where: