This repository provides a collection of configuration files and scripts to optimize CachyOS installations. These settings are designed to enhance system performance, responsiveness, and resource management for technical users.

Udev rules automatically apply system configurations upon device detection or state changes.

• Audio Power Management: Manages snd-hda-intel power saving to mitigate audio crackling, disabling it when AC-powered and re-enabling on battery.
• ZRAM Swap Optimization: Configures ZRAM to prefer anonymous page compression (vm.swappiness=150) and disables Zswap for efficient RAM-based swap.
• Device Permissions: Sets rtc0 and hpet device group to "audio" for proper application access.
• SATA Performance: Configures SATA host link power management to max_performance.
• I/O Scheduler Assignment: Dynamically assigns optimal I/O schedulers: bfq for HDDs, mq-deadline for SATA SSDs, and none for NVMe SSDs.
• HDD Performance Tuning: Applies hdparm settings (-B 254 -S 0) to rotational disks.
• NVIDIA Runtime Power Management: Enables/disables NVIDIA GPU runtime power management on driver bind/unbind events.
• CPU DMA Latency Access: Sets permissions for the cpu_dma_latency device.

Sysctl parameters modify kernel behavior at runtime for system-wide performance and stability.

• Memory & I/O Management: Adjusts vm.swappiness, vfs_cache_pressure, dirty_bytes, dirty_background_bytes, and dirty_writeback_centisecs for balanced memory usage and efficient disk I/O. Disables vm.page-cluster.
• System Stability & Security: Disables kernel.nmi_watchdog, enables kernel.unprivileged_userns_clone, restricts kernel.kptr_restrict, and disables kernel.kexec_load_disabled.
• Logging & Network: Configures kernel.printk to hide messages from console, increases net.core.netdev_max_backlog, and sets fs.file-max.
• BORE Scheduler Options: Provides commented-out settings for granular control over the BORE scheduler if enabled.

Modprobe configurations control module loading and behavior for hardware-specific optimizations.

• Audio Power Saving: Explicitly disables snd-hda-intel module power saving.
• AMD GPU Driver Enforcement: Forces amdgpu driver for GCN 1.0+ and 2.x GPUs, blacklisting radeon.
• Watchdog Module Blacklist: Prevents loading of Intel TCO and AMD SP5100 watchdog timers.
• NVIDIA Driver Optimizations: Applies parameters like NVreg_UsePageAttributeTable=1 (PAT for CPU performance), NVreg_InitializeSystemMemoryAllocations=0 (disables memory clearing for GPU), NVreg_DynamicPowerManagement=0x02 (mobile GPU power saving), and NVreg_RegistryDwords=RMIntrLockingMode=1 (frame-pacing).

Systemd unit and configuration files for streamlined boot, resource management, and service control.

• Journal Log Limits: Sets journald size limit to 50MB.
• Service Timeouts: Defines DefaultTimeoutStartSec (15s) and DefaultTimeoutStopSec (10s) for services.
• File Descriptor Limits: Increases DefaultLimitNOFILE for both system (2048:2097152) and user (1024:1048576) services.
• Time Synchronization: Configures systemd-timesyncd with Cloudflare and Google NTP servers.
• ZRAM Generator: Configures ZRAM with zstd or lz4 compression, ram size, and swap-priority=100.
• PCI Latency Service: Enables a systemd service to apply pci-latency script at boot.
• User Service Resource Delegation: Delegates CPU, cpuset, IO, memory, and pids to user services.

Configurations for temporary file cleanup and Transparent Huge Page (THP) behavior.

• Coredump Retention: Clears coredumps older than 3 days.
• THP Defragmentation: Sets transparent_hugepage/defrag to defer+madvise for tcmalloc-using applications.
• THP Shrinker: Configures khugepaged/max_ptes_none for Kernel 6.12+ to optimize THP memory usage.

• Touchpad Tapping: Enables tapping for libinput touchpads in X11.
• GDM Login Logo: Sets the CachyOS SVG as the GNOME login screen logo.

Bash and Lua scripts for system diagnostics, optimization, and administration.

• cachyos-bugreport.sh: Generates a comprehensive system bug report including hardware, logs, and installed packages, with an option to upload. (Requires root)
• dlss-swapper: Forces latest NVIDIA DLSS presets (SR, RR, FG) and updates DLLs via NGX.
• dlss-swapper-dll: Forces latest NVIDIA DLSS presets (SR, RR, FG) but skips NGX updater.
• game-performance: Sets CPU power profile to "performance" via powerprofilesctl when launching applications, with optional screensaver inhibition.
• kerver: Displays kernel version, x86_64 support, CPU config, and disk scheduler information.
• paste-cachyos: Uploads file content or stdin to https://paste.cachyos.org.
• pci-latency: Adjusts PCI latency timers for audio and other devices (sets sound cards to 80 cycles). (Requires root)
• sbctl-batch-sign: Helps batch sign files for Secure Boot, excluding common Microsoft/Windows EFI, .mui, .dll, and grub files. (Requires root, incompatible with Limine)
• topmem: A Lua script to display top processes by memory consumption (RSS, Swap, KSM profit), with sorting options.
• zink-run: Wrapper to run OpenGL applications using the Zink Gallium driver.