More performance tuning notes

Author: nefarius

.vscode/settings.json

@@ -76,6 +76,7 @@
         "vfio",
         "Vīcĭus",
         "vigem",
+        "Virtiofs",
         "Virtua",
         "vmci",
         "vmusb",

docs/research/VFIO/Windows-11-Gaming-VM.md

@@ -205,7 +205,7 @@ Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Set fixed amount of cores, topology and pin cores to best die layout; for `AMD Ryzen 7 3700X 8-Core Processor` it is
 
 ```xml
-  <vcpu placement="static">8</vcpu>
+  <vcpu placement="static" cpuset="8-15">8</vcpu>
   <iothreads>2</iothreads>
   <cputune>
     <vcpupin vcpu="0" cpuset="8"/>
@@ -242,6 +242,20 @@ echo 'KERNEL=="cpu8|cpu9|cpu10|cpu11|cpu12|cpu13|cpu14|cpu15", SUBSYSTEM=="cpu",
 cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
 ```
 
+```bash
+sudo vim /etc/default/grub
+```
+
+```bash
+GRUB_CMDLINE_LINUX_DEFAULT="... isolcpus=8-15"
+```
+
+```bash
+sudo update-grub
+```
+
+Reboot to activate.
+
 ## Resources
 
 - [Sharing files with Virtiofs](https://libvirt.org/kbase/virtiofs.html)