richard/ipmi-fancontrol
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"Riku" 2025-02-02 09:53:32 +02:00
parent 808c898192
commit f8437d26ea
1 changed files with 50 additions and 80 deletions
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126
fancontrol.pl
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@ -3,25 +3,9 @@ use strict;
use warnings;
use List::Util qw[min max];
# This script controls SuperMicro server fan speeds via IPMI in response to CPU and SYS temperatures.
# A fork of https://github.com/missmah/ipmi_tools by Layla Mah <layla@insightfulvr.com>
# Sensor treshold reset to allow slower fans
`ipmitool sensor thresh FANA lower 0 100 200`;
`ipmitool sensor thresh FANB lower 0 100 200`;
`ipmitool sensor thresh FAN1 lower 0 100 200`;
`ipmitool sensor thresh FAN2 lower 0 100 200`;
`ipmitool sensor thresh FAN3 lower 0 100 200`;
`ipmitool sensor thresh FAN4 lower 0 100 200`;
`ipmitool sensor thresh FAN5 lower 0 100 200`;
# cache SDR data for faster access
`rm /opt/ipmi-cache.sdr`;
`while ipmitool sdr dump /opt/ipmi-cache.sdr; [ $? != 0 ]; do sleep 2; done`;
my $min_temp_change = 2; # °C minimum change to actually cause a fan speed update
my $seconds_to_sleep = 2; # Number of seconds to sleep between update loops
my $min_temp_change = 3; # °C minimum change to actually cause a fan speed update
my $min_power_change = 30; # W, minimum change to do something
my $seconds_to_sleep = 4; # Number of seconds to sleep between update loops
# 0x64 = 100, 0x00 = 0.
# CPU Temp -> Fan Speed Mappings
@ -31,58 +15,51 @@ my %cpu_temp_to_fan_speed;
$cpu_temp_to_fan_speed{70} = 0x56;
$cpu_temp_to_fan_speed{65} = 0x52;
$cpu_temp_to_fan_speed{60} = 0x48;
$cpu_temp_to_fan_speed{55} = 0x46;
$cpu_temp_to_fan_speed{50} = 0x42;
$cpu_temp_to_fan_speed{45} = 0x40;
$cpu_temp_to_fan_speed{40} = 0x36;
$cpu_temp_to_fan_speed{35} = 0x34;
$cpu_temp_to_fan_speed{30} = 0x32;
$cpu_temp_to_fan_speed{55} = 0x44;
$cpu_temp_to_fan_speed{50} = 0x40;
$cpu_temp_to_fan_speed{45} = 0x36;
$cpu_temp_to_fan_speed{40} = 0x32;
$cpu_temp_to_fan_speed{35} = 0x30;
$cpu_temp_to_fan_speed{30} = 0x28;
# SYS Temp -> Fan Speed Mappings
my %sys_temp_to_fan_speed;
$sys_temp_to_fan_speed{66} = 0x64;
$sys_temp_to_fan_speed{60} = 0x60;
$sys_temp_to_fan_speed{57} = 0x42;
$sys_temp_to_fan_speed{55} = 0x40;
$sys_temp_to_fan_speed{52} = 0x36;
$sys_temp_to_fan_speed{50} = 0x34;
$sys_temp_to_fan_speed{47} = 0x32;
$sys_temp_to_fan_speed{45} = 0x30;
$sys_temp_to_fan_speed{30} = 0x28;
# SYS Power -> Fan Speed Mappings
my %sys_power_to_fan_speed;
$sys_power_to_fan_speed{650} = 0x64;
$sys_power_to_fan_speed{575} = 0x60;
$sys_power_to_fan_speed{525} = 0x56;
$sys_power_to_fan_speed{500} = 0x54;
$sys_power_to_fan_speed{475} = 0x52;
$sys_power_to_fan_speed{450} = 0x50;
$sys_power_to_fan_speed{425} = 0x48;
$sys_power_to_fan_speed{400} = 0x46;
$sys_power_to_fan_speed{375} = 0x44;
$sys_power_to_fan_speed{350} = 0x42;
$sys_power_to_fan_speed{325} = 0x40;
$sys_power_to_fan_speed{300} = 0x36;
$sys_power_to_fan_speed{275} = 0x34;
$sys_power_to_fan_speed{250} = 0x32;
$sys_power_to_fan_speed{225} = 0x30;
$sys_power_to_fan_speed{200} = 0x28;
$sys_power_to_fan_speed{175} = 0x26;
$sys_power_to_fan_speed{150} = 0x24;
$sys_power_to_fan_speed{125} = 0x22;
$sys_power_to_fan_speed{100} = 0x20;
my $g_current_sys_fan_duty_cycle = 0;
my $g_current_cpu_fan_duty_cycle = 0;
my $g_current_sys_temp = 0;
my $g_current_cpu_temp = 0;
my $g_current_sys_power = 0;
my $g_last_set_cpu_temp = 0;
my $g_last_set_sys_temp = 0;
my $g_last_set_sys_power = 0;
sub UpdateFanSpeed {
# Gather statistics for fan speed and CPU Temp
my $ipmi_output = `ipmitool sdr list full -S /opt/ipmi-cache.sdr`;
my @vals = split( "\n", $ipmi_output );
my $current_cpu_temp = 0;
my $current_sys_temp = 0;
my $current_cpu_temp = `sensors \$(sensors | grep k10temp) | grep 'Tctl:' | cut -c 16-17 | tr -d '\n'`;
my $current_sys_power = `sensors \$(sensors | grep corsairpsu) | grep 'power total:' | cut -c 14-16 | tr -d '\n'`;
my $cpu_temp_difference = 0;
my $sys_temp_difference = 0;
foreach my $value (@vals) {
if( $value =~ /^(CPU\sTemp).*\s(\d+)\s.*degrees\sC.*/gi ) {
my $cpu_temp = $2;
$current_cpu_temp = max( $cpu_temp, $current_cpu_temp );
}
if( $value =~ /^(System\sTemp).*\s(\d+)\s.*degrees\sC.*/gi ) {
my $sys_temp = $2;
$current_sys_temp = max( $sys_temp, $current_sys_temp );
}
} # foreach my $value (@vals)
my $sys_power_difference = 0;
$g_current_cpu_temp = $current_cpu_temp;
$g_current_sys_temp = $current_sys_temp;
$g_current_sys_power = $current_sys_power;
my $desired_cpu_fan_speed = 0x0;
my $desired_sys_fan_speed = 0x0;
@ -90,20 +67,15 @@ sub UpdateFanSpeed {
my @cpu_temps = keys %cpu_temp_to_fan_speed;
for my $cpu_temp (@cpu_temps) {
if( $current_cpu_temp >= $cpu_temp ) {
# If the current CPU temperature is higher than the temperature enumerated by this hash lookup,
# Then set the desired fan speed (if our value is larger than the existing value)
$desired_cpu_fan_speed = max( $cpu_temp_to_fan_speed{ $cpu_temp }, $desired_cpu_fan_speed );
# print "The fan speed setting for CPU Temp $cpu_temp *C is $cpu_temp_to_fan_speed{$cpu_temp} % duty cycle\n";
}
}
my @sys_temps = keys %sys_temp_to_fan_speed;
for my $sys_temp (@sys_temps) {
if( $current_sys_temp >= $sys_temp ) {
# If the current gPU temperature is higher than the temperature enumerated by this hash lookup,
# Then set the desired fan speed (if our value is larger than the existing value)
$desired_sys_fan_speed = max( $sys_temp_to_fan_speed{ $sys_temp }, $desired_sys_fan_speed );
# print "The fan speed setting for GPU Temp $sys_temp *C is $sys_temp_to_fan_speed{$sys_temp} % duty cycle\n";
my @sys_powers = keys %sys_power_to_fan_speed;
for my $sys_power (@sys_powers) {
#for my $sys_temp (@sys_temps) {
if( $current_sys_power >= $sys_power ) {
$desired_sys_fan_speed = max( $sys_power_to_fan_speed{ $sys_power }, $desired_sys_fan_speed );
}
}
@ -118,15 +90,15 @@ sub UpdateFanSpeed {
}
$cpu_temp_difference = $g_current_cpu_temp - $g_last_set_cpu_temp;
$sys_temp_difference = $g_current_sys_temp - $g_last_set_sys_temp;
$sys_power_difference = $g_current_sys_power - $g_last_set_sys_power;
if( (abs $sys_temp_difference) > $min_temp_change ) {
print "(SYS) Temp change of $sys_temp_difference °C, current $g_current_sys_temp °C, fan speed set to $desired_sys_fan_speed %\n";
if( (abs $sys_power_difference) > $min_power_change ) {
print "(SYS) Power change of $sys_power_difference W, current $g_current_sys_power W, fan speed set to $desired_sys_fan_speed %\n";
$g_last_set_sys_temp = $g_current_sys_temp;
$g_last_set_sys_power = $g_current_sys_power;
$g_current_sys_fan_duty_cycle = $desired_sys_fan_speed;
`ipmitool raw 0x30 0x70 0x66 0x01 0x01 $desired_sys_fan_speed`;
`ipmitool raw 0x30 0x70 0x66 0x01 0x00 $desired_sys_fan_speed`;
}
if( (abs $cpu_temp_difference) > $min_temp_change ) {
@ -135,7 +107,7 @@ sub UpdateFanSpeed {
$g_last_set_cpu_temp = $g_current_cpu_temp;
$g_current_cpu_fan_duty_cycle = $desired_cpu_fan_speed;
`ipmitool raw 0x30 0x70 0x66 0x01 0x00 $desired_cpu_fan_speed`;
`ipmitool raw 0x30 0x70 0x66 0x01 0x01 $desired_cpu_fan_speed`;
}
}
@ -144,8 +116,6 @@ print "Setting Fan mode to FULL SPEED.\n";
`ipmitool raw 0x30 0x45 0x01 0x01`;
while( 1 ) {
#print "Calling UpdateFanSpeed()...\n";
UpdateFanSpeed();
#print "Update Complete - going to sleep for $seconds_to_sleep seconds...\n";
sleep $seconds_to_sleep;
}