For once , and exception my Linux config explained. I want to do the same for FreeBSD. Please advice,
Code:
1. Desktop Responsiveness & Gaming
[*]CONFIG_SCHED_CLASS_EXT=y (sched_ext):
This is the "game changer." It allows you to load BPF-based schedulers from userspace
(such as scx_rustland or scx_lavd). These are often much better at prioritizing interactive
tasks (your desktop/game) over heavy background task (compiling).
[*]CONFIG_SCHED_AUTOGROUP=y:
This groups tasks per terminal/session. If you are compiling with make -j in one terminal,
this ensures the entire compile session is treated as a single "group,"
preventing your desktop environment in another group from being completely "suffocated."
[*]CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y:
The scheduler provides direct feedback to the CPU regarding the required speed.
This is more efficient and faster than the old 'ondemand' governor, which helps with erratic
framerates in games.
2. Parallel Compiling (CPU Load)
[*]CONFIG_FAIR_GROUP_SCHED=y & CONFIG_CGROUP_SCHED=y:
These ensure that CPU time is distributed fairly. Even if you are using 32 threads for your compile,
these options ensure the rest of your system still receives CPU cycles.
[*]CONFIG_SCHED_MC=y & CONFIG_SCHED_SMT=y:
Crucial for modern CPUs. The scheduler understands the hierarchy of your cores and threads
(SMT/Hyperthreading) allowing compilation to be distributed across the physical hardware more efficiently.
3. Disk Load (I/O Schedulers) During compilation, you are writing thousands of small files.
[*]CONFIG_IOSCHED_BFQ=y:
This is the best choice for your scenario. BFQ (Budget Fair Queuing) is designed to keep the desktop
responsive while heavy I/O is occurring (such as compiling on an SSD or HDD).
It prevents a single process from hogging the entire disk bandwidth.
4. Gaming & NVIDIA
[*]CONFIG_DRM_SCHED=m:
The Direct Rendering Manager scheduler handles the management of GPU tasks. Although the NVIDIA driver
largely does its own management (proprietary), this is necessary for the general graphics stack.
[*]CONFIG_SCHED_CORE=y:
This can help with security (against SMT attacks), but in some cases, it incurs a very small performance hit.
For pure gaming, this is sometimes disabled, but for a secure system, it is fine.
Summary advice for your setup:
Your kernel is excellently configured for a "workstation/gaming" hybrid. Thanks to sched_ext,
you have the ability to use very modern schedulers specifically designed to keep games
running smoothly while you compile in the background.
Tip: Use the BFQ scheduler for your disk and look into scx_loader to activate a BPF scheduler (such as scx_rustland)
for the best experience during compilation.
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