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From: Dominik Csapak <d.csapak@proxmox.com>
To: pve-devel@lists.proxmox.com
Date: Wed, 28 Jul 2021 14:12:43 +0200
Message-Id: <20210728121243.285295-1-d.csapak@proxmox.com>
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Subject: [pve-devel] [PATCH common v2] 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>
---
changes from v1:
* made the new fields non-optional (new kernel is a hard req.)
* added a new 'total' field which is the same as in pbs
src/PVE/ProcFSTools.pm | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/src/PVE/ProcFSTools.pm b/src/PVE/ProcFSTools.pm
index ff30e4b..a75274a 100644
--- a/src/PVE/ProcFSTools.pm
+++ b/src/PVE/ProcFSTools.pm
@@ -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;
--
2.30.2