https://wiki.jandzsogyorgy.hu/index.php?action=history&feed=atom&title=Set_CPU_Power_Management_on_Linux 2026-05-05T14:25:00Z Revision history for this page on the wiki MediaWiki 1.42.6 https://wiki.jandzsogyorgy.hu/index.php?title=Set_CPU_Power_Management_on_Linux&diff=343&oldid=prev 2025-11-22T21:04:40Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 21:04, 22 November 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[Category:<del style="font-weight: bold; text-decoration: none;">System Services]]</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[Category:<ins style="font-weight: bold; text-decoration: none;">General Linux</ins>]]</div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">[[Category:CPU Power Management</del>]]</div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Proxmox VE]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Proxmox VE]]</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Guides &amp; Tutorials]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Guides &amp; Tutorials]]</div></td></tr> </table>

Gyurci08 https://wiki.jandzsogyorgy.hu/index.php?title=Set_CPU_Power_Management_on_Linux&diff=342&oldid=prev 2025-11-22T20:56:58Z

<p>Created page with &quot;<a href="/index.php?title=Category:System_Services&amp;action=edit&amp;redlink=1" class="new" title="Category:System Services (page does not exist)">Category:System Services</a> <a href="/index.php?title=Category:CPU_Power_Management&amp;action=edit&amp;redlink=1" class="new" title="Category:CPU Power Management (page does not exist)">Category:CPU Power Management</a> <a href="/index.php/Category:Proxmox_VE" title="Category:Proxmox VE">Category:Proxmox VE</a> <a href="/index.php/Category:Guides_%26_Tutorials" title="Category:Guides &amp; Tutorials">Category:Guides &amp; Tutorials</a> == Prerequisites == Install `cpupower` if missing: &lt;syntaxhighlight lang=&quot;bash&quot;&gt; sudo apt-get update sudo apt-get install -y linux-cpupower &lt;/syntaxhighlight&gt; Verify CPU frequency scaling support: &lt;syntaxhighlight lang=&quot;bash&quot;&gt; ls /sys/devices/system/cpu/cpufreq/policy0/energy_performance_preference &lt;/syntaxhighlight&gt; == Installation == Create `/e...&quot;</p> <p><b>New page</b></p><div>[[Category:System Services]]<br /> [[Category:CPU Power Management]]<br /> [[Category:Proxmox VE]]<br /> [[Category:Guides &amp; Tutorials]]<br /> <br /> == Prerequisites ==<br /> <br /> Install `cpupower` if missing:<br /> <br /> &lt;syntaxhighlight lang=&quot;bash&quot;&gt;<br /> sudo apt-get update<br /> sudo apt-get install -y linux-cpupower<br /> &lt;/syntaxhighlight&gt;<br /> <br /> Verify CPU frequency scaling support:<br /> <br /> &lt;syntaxhighlight lang=&quot;bash&quot;&gt;<br /> ls /sys/devices/system/cpu/cpufreq/policy0/energy_performance_preference<br /> &lt;/syntaxhighlight&gt;<br /> <br /> <br /> == Installation ==<br /> <br /> Create `/etc/systemd/system/cpu-thermal-control.service`:<br /> <br /> &lt;syntaxhighlight lang=&quot;ini&quot;&gt;<br /> [Unit]<br /> Description=Apply powersave governor, balance_power EPP, and frequency limits<br /> After=multi-user.target<br /> <br /> [Service]<br /> Type=oneshot<br /> ExecStart=/bin/sh -c &#039;cpupower frequency-set -g powersave &amp;&amp; echo balance_power &gt; /sys/devices/system/cpu/cpufreq/policy0/energy_performance_preference &amp;&amp; cpupower frequency-set -u 4GHz&#039;<br /> RemainAfterExit=yes<br /> <br /> [Install]<br /> WantedBy=multi-user.target<br /> &lt;/syntaxhighlight&gt;<br /> <br /> Enable and start the service:<br /> <br /> &lt;syntaxhighlight lang=&quot;bash&quot;&gt;<br /> sudo systemctl daemon-reload<br /> sudo systemctl enable --now cpu-thermal-control.service<br /> &lt;/syntaxhighlight&gt;<br /> <br /> <br /> == Usage &amp; Power Save Mode ==<br /> <br /> - The service sets CPU governor to powersave, EPP to balance_power, and caps max frequency.<br /> - To enable more aggressive power saving, modify `ExecStart` to use:<br /> <br /> &lt;syntaxhighlight lang=&quot;ini&quot;&gt;<br /> ExecStart=/bin/sh -c &#039;cpupower frequency-set -g powersave &amp;&amp; echo powersave &gt; /sys/devices/system/cpu/cpufreq/policy0/energy_performance_preference &amp;&amp; cpupower frequency-set -d 800MHz -u 2GHz&#039;<br /> &lt;/syntaxhighlight&gt;<br /> <br /> - Reload and restart service after changes:<br /> <br /> &lt;syntaxhighlight lang=&quot;bash&quot;&gt;<br /> sudo systemctl daemon-reload<br /> sudo systemctl restart cpu-thermal-control.service<br /> &lt;/syntaxhighlight&gt;<br /> <br /> - Check CPU frequency info:<br /> <br /> &lt;syntaxhighlight lang=&quot;bash&quot;&gt;<br /> cpupower frequency-info<br /> &lt;/syntaxhighlight&gt;<br /> <br /> <br /> == For Proxmox Users ==<br /> <br /> Proxmox defaults to performance mode causing higher CPU temps. This service:<br /> <br /> - Switches to powersave governor,<br /> - Applies balance_power or powersave EPP,<br /> - Caps CPU frequency for cooler, quieter operation.<br /> <br /> Ensure kernel supports CPU scaling and adjust frequency caps as needed for your hardware.<br /> <br /> Start this service on Proxmox nodes to improve thermal management and power efficiency.<br /> <br /> <br /> == Troubleshooting ==<br /> <br /> Check service logs for errors:<br /> <br /> &lt;syntaxhighlight lang=&quot;bash&quot;&gt;<br /> journalctl -u cpu-thermal-control.service<br /> &lt;/syntaxhighlight&gt;<br /> <br /> Verify permissions and CPU frequency scaling support.<br /> <br /> <br /> == Sources ==<br /> <br /> * [Linux cpupower Documentation](https://www.kernel.org/doc/html/latest/admin-guide/pm/cpufreq.html)<br /> * [systemd Service Files](https://www.freedesktop.org/software/systemd/man/systemd.service.html)<br /> * [EPP Documentation](https://www.kernel.org/doc/html/latest/admin-guide/pm/energy_perf_bias.html)</div>

Gyurci08