gpu-load

#!/usr/bin/env perl

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

use strict;
use warnings;
use utf8;
use Getopt::Long;

# default values
my $t_warn = $ENV{T_WARN} || 70;
my $t_crit = $ENV{T_CRIT} || 90;
my $gpu_brand = $ENV{GPU_BRAND} || "NVIDIA";
my $gpu_usage = -1;
my $gpu_mem = -1;
my $gpu_video = -1;
my $gpu_pcie = -1;

my $full_text = "";

sub help {
    print "Usage: gpu-load [-w <warning>] [-c <critical>]\n";
    print "-w <percent>: warning threshold to become amber\n";
    print "-c <percent>: critical threshold to become red\n";
    exit 0;
}

GetOptions("help|h" => \&help,
           "w=i"    => \$t_warn,
           "c=i"    => \$t_crit);

# Get GPU usage from nvidia-settings
if ($gpu_brand eq "NVIDIA") {
    open (NVS, 'nvidia-settings -q GPUUtilization -t |') or die;
    while (<NVS>) {
        if (/^[a-zA-Z]*=(\d+), [a-zA-Z]*=(\d+), [a-zA-Z]*=(\d+), [a-zA-Z]*=(\d+)$/) {
            $gpu_usage = $1;
            $gpu_mem = $2;
            $gpu_video = $3;
            $gpu_pcie = $4;
            last;
        }
    }
    close(NVS);
    $full_text = sprintf "%.0f%% %.0f%% %.0f%% %.0f%%\n", $gpu_usage, $gpu_mem, $gpu_video, $gpu_pcie;
} 

# For AMD, get from radeontop
elsif ($gpu_brand eq "AMD") {
    open (AMD, 'radeontop -d - -l 1 |') or die;
    while (<AMD>) {
        if (/^.*[gpu] (\d+)\.\d+%.*.*[vram] (\d+)\.\d+%.*$/) {
            $gpu_usage = $1;
            $gpu_mem = $2;
            last;
        }
    }
    close(AMD);
    $full_text = sprintf "%.0f%% %.0f%%\n", $gpu_usage, $gpu_mem;
}

$gpu_usage eq -1 and die 'Can\'t find GPU information';

# Print full_text, short_text
print $full_text;
printf "%.0f%%\n", $gpu_usage;

# Print color, if needed
if ($gpu_usage >= $t_crit || $gpu_mem >= $t_crit || $gpu_video >= $t_crit || $gpu_pcie >= $t_crit) {
    print "#FF0000\n";
    exit 33;
} elsif ($gpu_usage >= $t_warn || $gpu_mem >= $t_warn || $gpu_video >= $t_warn || $gpu_pcie >= $t_warn) {
    print "#FFBF00\n";
}

exit 0;