https://blog.cbugk.com/tags/linux-scheduler/ Recent content in Linux Scheduler on cbugk's blog Hugo -- 0.140.2 en-us Mon, 22 Jan 2024 20:51:25 +0300 https://blog.cbugk.com/post/ryzen-5850x/ Mon, 22 Jan 2024 20:51:25 +0300 https://blog.cbugk.com/post/ryzen-5850x/ <h2 id="tldr-adventure-of-reviving-a-cpu-as-a-hypervisor">TL;DR: Adventure of reviving a CPU as a hypervisor</h2> <p>About few months ago, I found a bargain on a seemingly faulty Ryzen R9 5900X unit. Stangely enough, it was said to drop internet connectivity while gaming. Long story short, there are 2 defective physical cores out of the 12 present. I ended up isolating them with <em>isolcpus=</em> kernel parameter within boot menu.</p> <h2 id="methodology">Methodology:</h2> <p>Video recording of the process. Includes temporary solution for GRUB2 (see <code>/etc/default/grub</code> or <code>/etc/kernel/cmdline</code> for <a href="https://pve.proxmox.com/wiki/Host_Bootloader#sysboot_edit_kernel_cmdline">proxmox sysboot</a> for persistence), an example of OS installation failure without modification, and a test example.</p>