/proc/stat has extra info not documented in man 5 proc. What are the extra 3 numbers on the cpu line?
man 5 proc:
kernel/system statistics. Varies with architecture. Common entries include:
cpu 3357 0 4313 1362393
The number of jiffies (1/100ths of a second) that the system spent in user mode, user mode with low
priority (nice), system mode, and the idle task, respectively. The last value should be 100 times
the second entry in the uptime pseudo-file.
cat /proc/stat (first line):
cpu 913097 309081 268613 30942701 155416 12813 0