The first XanMod Linux Kernel based on Linux Kernel 6.6 has been released. XanMod is a general-purpose Linux kernel distribution with custom settings and new features. The real-time version is recommended for critical runtime applications such as Linux gaming eSports, streaming, live productions and ultra-low latency enthusiasts.

Linux 6.6.0-xanmod1

XanMod is a general-purpose Linux kernel distribution with custom settings and new features. Built to provide a stable, responsive and smooth desktop experience.

The real-time version is recommended for critical runtime applications such as Linux gaming eSports, streaming, live productions and ultra-low latency enthusiasts.

Supports all recent 64-bit versions of Debian and Ubuntu-based systems.

Main Features

• Preemptive Full Tickless Kernel at 500Hz w/ Tuned CPU Core Scheduler.
• RCU Boost for better responsiveness and lower overall system latency.
• Block Layer w/ multi-threaded runqueue for high I/O throughput.
• Caching, Virtual Memory Manager and CPUFreq Governor improvements.
• BBR TCP Congestion Control + FQ-PIE Packet Scheduling and AQM Algorithm [5.8].
• ORC Unwinder for Kernel Stack Traces (debuginfo) implementation.
• Third-party patchset available: ZSTD kernel, initrd and modules support [5.8][5.6-rt], Full x86_64 FSGSBASE instructions [5.8], Clear Linux [partial], CK's Hrtimer Patchset [5.8][5.4], Wine / Proton Fsync, PCIe ACS Override, BMQ Process Scheduler [5.4 stock disabled], Aufs [5.4] and GCC graysky's.
• Real-time Linux kernel (PREEMPT_RT) build available [5.6-rt][5.4-rt].
• Generic kernel package for compatibility with most Debian & Ubuntu based distributions. Built on the latest GCC 10.2 and Binutils 2.35.
• GPLv2 license. Can be built for any distribution or purpose.

Install via Terminal

echo 'deb http://deb.xanmod.org releases main' | sudo tee /etc/apt/sources.list.d/xanmod-kernel.list && wget -qO - https://dl.xanmod.org/gpg.key | sudo apt-key add -

Then update and install:

sudo apt update && sudo apt install linux-xanmod

Reboot.

Meta packages available: linux-xanmod, linux-xanmod-edge, linux-xanmod-lts, linux-xanmod-rt-edge and linux-xanmod-rt.

To try without adding the repository

Download from Sourceforge and install:
https://sourceforge.net/projects/xanmod/files/

1. In terminal:

   sudo dpkg -i linux-image-*xanmod*.deb linux-headers-*xanmod*.deb

2. Reboot.

• Check it:

  cat /proc/version

* linux-firmware-image package is optional

Linux 6.6.0-xanmod1

• 296a5e6 Linux 6.6.0-xanmod1
• 436520b .gitlab-ci: Add gitlab-ci.yml file
• e2923de PCI: Enable overrides for missing ACS capabilities
• 406c48b sysctl: add sysctl to disallow unprivileged CLONE_NEWUSER by default
• 397cbde winesync: Introduce the winesync driver and character device patchset
• 22d3da4 wait: allow to use __wake_up_pollfree() from GPL modules
• 6b38abd binder: give binder_alloc its own debug mask file
• 0cdc15b binder: turn into module
• ef1443c mac80211: ignore AP power level when tx power type is "fixed"
• 43e8b77 netfilter: add xt_FLOWOFFLOAD target
• 81d9073 netfilter: Add netfilter nf_tables fullcone support
• 5212f9f tcp: Add a sysctl to skip tcp collapse processing when the receive buffer is full
• eb1649f tcp: export TCPI_OPT_ECN_LOW in tcp_info tcpi_options field
• d884ab1 net-tcp_bbr: v3: ensure ECN-enabled BBR flows set ECT on retransmits
• 0a9cc70 net-tcp_bbr: v3: update TCP "bbr" congestion control module to BBRv3
• 41d3789 tcp: introduce per-route feature RTAX_FEATURE_ECN_LOW
• 41ea948 net-tcp_bbr: v2: introduce is_acking_tlp_retrans_seq into rate_sample
• 2d36fbc net-tcp_bbr: v2: inform CC module of losses repaired by TLP probe
• b99d139 net-tcp_bbr: v2: record app-limited status of TLP-repaired flight
• af844c1 net-tcp: add fast_ack_mode=1: skip rwin check in tcp_fast_ack_mode__tcp_ack_snd_check()
• 6b5af62 net-tcp: re-generalize TSO sizing in TCP CC module API
• a1ee90b net-tcp: add new ca opts flag TCP_CONG_WANTS_CE_EVENTS
• eb6b2df net-tcp_bbr: v2: adjust skb tx.in_flight upon split in tcp_fragment()
• dfa8524 net-tcp_bbr: v2: adjust skb tx.in_flight upon merge in tcp_shifted_skb()
• 5a279c1 net-tcp_bbr: v2: introduce ca_ops->skb_marked_lost() CC module callback API
• 26ee015 net-tcp_bbr: v2: export FLAG_ECE in rate_sample.is_ece
• bd60682 net-tcp_bbr: v2: count packets lost over TCP rate sampling interval
• a2a7a48 net-tcp_bbr: v2: snapshot packets in flight at transmit time and pass in rate_sample
• 281acca net-tcp_bbr: v2: shrink delivered_mstamp, first_tx_mstamp to u32 to free up 8 bytes
• b376e3f net-tcp_bbr: broaden app-limited rate sample detection
• 0c18e72 futex: Add entry point for FUTEX_WAIT_MULTIPLE (opcode 31)
• 16b55ce drivers: initialize ata before graphics
• 82c4007 locking: rwsem: spin faster
• e0d0bc8 firmware: Enable stateless firmware loading
• a736e30 sched/wait: Do accept() in LIFO order for cache efficiency
• 6cc7003 x86/vdso: Use lfence instead of rep and nop
• a7ffbbb XANMOD: Makefile: Move ARM and x86 instruction set selection to kernel-wide build
• 05a0016 x86/kconfig: more uarches for kernel 5.17+ [xm_rev3]
• 5b634d8 XANMOD: scripts/setlocalversion: Move localversion* files to the end
• a1c300c XANMOD: scripts/setlocalversion: remove "+" tag for git repo short version
• b32ee09 XANMOD: Makefile: Disable GCC vectorization on trees
• 6144cdb XANMOD: lib/kconfig.debug: disable default CONFIG_SYMBOLIC_ERRNAME and CONFIG_DEBUG_BUGVERBOSE
• 96d45fc XANMOD: cpufreq: tunes ondemand and conservative governor for performance
• f5fc77f XANMOD: sched/autogroup: Add kernel parameter and config option to enable/disable autogroup feature by default
• 298e508 XANMOD: mm/vmscan: vm_swappiness = 30 decreases the amount of swapping
• 58c6148 XANMOD: dcache: cache_pressure = 50 decreases the rate at which VFS caches are reclaimed
• 2999a55 XANMOD: kconfig: add 500Hz timer interrupt kernel config option
• 2d50fc2 XANMOD: block: set rq_affinity to force full multithreading I/O requests
• c80d07b XANMOD: block/mq-deadline: Disable front_merges by default
• 17d8093 XANMOD: block/mq-deadline: Increase write priority to improve responsiveness
• 3f78a3d XANMOD: rcu: Change sched_setscheduler_nocheck() calls to SCHED_RR policy
• a7fee85 XANMOD: sched/core: Add yield_type sysctl to reduce or disable sched_yield
• be90321 XANMOD: fair: Set scheduler tunable latencies to unscaled
• b775d53 XANMOD: fair: Remove all energy efficiency functions
• 4170b10 XANMOD: x86/build: Add more x86 code optimization flags
• c91ba2c XANMOD: x86/build: Prevent generating avx2 and avx512 floating-point code
• ffc2532 Linux 6.6

Homepage
Download Linux 6.6.0-xanmod1 source from GitHub