Difference between revisions of "RZ-G/RZG2 kernel"
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<big> RZ/G2 Kernel and Linux FAQ </big> | <big> RZ/G2 Kernel and Linux FAQ </big> | ||
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| + | = CPU Hotplug = | ||
| + | You can enable and disable CPU cores by wrriting to a sysfs value. | ||
<br> | <br> | ||
| − | + | This is helpful for when you want to experiment with the performance of your application if you were to use a processor with less CPU cores. | |
| + | <br> | ||
| + | For example, this command will disable the 2nd core. | ||
| + | <br> | ||
| + | <code>$ echo 0 > /sys/devices/system/cpu/cpu1/online</code> | ||
| + | <br> | ||
| + | More detailed information can be found here: https://www.cyberciti.biz/faq/debian-rhel-centos-redhat-suse-hotplug-cpu | ||
Revision as of 13:08, 22 October 2020
RZ/G2 Kernel and Linux FAQ
Contents |
CPU Hotplug
You can enable and disable CPU cores by wrriting to a sysfs value.
This is helpful for when you want to experiment with the performance of your application if you were to use a processor with less CPU cores.
For example, this command will disable the 2nd core.
$ echo 0 > /sys/devices/system/cpu/cpu1/online
More detailed information can be found here: https://www.cyberciti.biz/faq/debian-rhel-centos-redhat-suse-hotplug-cpu
