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ProcFSTools: read_proc_stat: add more cpu stats from /proc/stat

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those fields might be interesting to users. At the moment, this is
only used in the external metrics export.

These fields exist in the kernel since:
* irq - 2.6.0
* softirq - 2.6.0
* steal - 2.6.11
* guest - 2.6.24
* guest_nice - 2.6.33

so they must all exist

also add a 'total' field which simply sums up the (non-guest) fields

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
This commit is contained in:
Dominik Csapak 2021-07-28 14:12:43 +02:00 committed by Thomas Lamprecht
parent 576dadb137
commit 5a82eb712e
1 changed files with 16 additions and 1 deletions
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17
src/PVE/ProcFSTools.pm
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@ -168,13 +168,18 @@ sub read_proc_stat {
if (my $fh = IO::File->new ("/proc/stat", "r")) {
while (defined (my $line = <$fh>)) {
if ($line =~ m|^cpu\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s|) {
if ($line =~ m|^cpu\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)|) {
$res->{user} = $1;
$res->{nice} = $2;
$res->{system} = $3;
$res->{idle} = $4;
$res->{used} = $1+$2+$3;
$res->{iowait} = $5;
$res->{irq} = $6;
$res->{softirq} = $7;
$res->{steal} = $8;
$res->{guest} = $9;
$res->{guest_nice} = $10;
} elsif ($line =~ m|^cpu\d+\s|) {
$cpucount++;
}
@ -186,6 +191,16 @@ sub read_proc_stat {
my $ctime = gettimeofday; # floating point time in seconds
# the sum of all (non-guest) fields
$res->{total} = $res->{user}
+ $res->{nice}
+ $res->{system}
+ $res->{iowait}
+ $res->{irq}
+ $res->{softirq}
+ $res->{steal}
+ $res->{idle};
$res->{ctime} = $ctime;
$res->{cpu} = 0;
$res->{wait} = 0;