> The mistake here seems to be the division by the number of CPU cores, because
> the overall porcentage retrieved from the /proc/stat file is already in the
> range from 0-100, regardless of the number of CPU cores
>From `man proc`
> The amount of time, measured in units of USER_HZ (1/100ths of a second on
> most architectures, use sysconf(_SC_CLK_TCK) to obtain the right value), that
> the system spent in various states:
So *not* a percentage
```
/proc/stat
kernel/system statistics. Varies with architecture. Common entries include:
cpu 3357 0 4313 1362393
The amount of time, measured in units of USER_HZ (1/100ths of a
second on most architectures, use sysconf(_SC_CLK_TCK) to obtain the right
value), that the system spent in various states:
user
(1) Time spent in user mode.
nice
(2) Time spent in user mode with low priority (nice).
system
(3) Time spent in system mode.
idle
(4) Time spent in the idle task. This value should be
USER_HZ times the second entry in the /proc/uptime pseudo-file.
iowait (since Linux 2.5.41)
(5) Time waiting for I/O to complete.
irq (since Linux 2.6.0-test4)
(6) Time servicing interrupts.
softirq (since Linux 2.6.0-test4)
(7) Time servicing softirqs.
steal (since Linux 2.6.11)
(8) Stolen time, which is the time spent in other operating
systems when running in a virtualized environment
guest (since Linux 2.6.24)
(9) Time spent running a virtual CPU for guest operating
systems under the control of the Linux kernel.
guest_nice (since Linux 2.6.33)
(10) Time spent running a niced guest (virtual CPU for
guest operating systems under the control of the Linux kernel).
page 5741 1808
The number of pages the system paged in and the number that were
paged out (from disk).
swap 1 0
The number of swap pages that have been brought in and out.
intr 1462898 This line shows counts of interrupts serviced since
boot time, for each of the possible system interrupts. The first column is the
total of all interrupts serviced including unnumbered architecture specific
interrupts; each subsequent column is the total for that particular numbered
interrupt. Unnumbered interrupts are not shown, only summed into the total.
disk_io: (2,0):(31,30,5764,1,2) (3,0):...
(major,disk_idx):(noinfo, read_io_ops, blks_read, write_io_ops,
blks_written)
(Linux 2.4 only)
ctxt 115315
The number of context switches that the system underwent.
btime 769041601
boot time, in seconds since the Epoch, 1970-01-01 00:00:00 +
(UTC).
processes 86031
Number of forks since boot.
procs_running 6
Number of processes in runnable state. (Linux 2.5.45 onward.)
procs_blocked 2
Number of processes blocked waiting for I/O to complete. (Linux
2.5.45 onward.)
```
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