Debian 9973 Published by

Another XanMod Linux Kernel based on the latest Linux Kernel 6.4.0 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 6.4.0-xanmod2

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 releases main' | sudo tee /etc/apt/sources.list.d/xanmod-kernel.list && wget -qO - | sudo apt-key add -

Then update and install:

sudo apt update && sudo apt install linux-xanmod


Meta packages available: linux-xanmodlinux-xanmod-edgelinux-xanmod-ltslinux-xanmod-rt-edge and linux-xanmod-rt.

To try without adding the repository

Download from Sourceforge and install:

  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 6.4.0-xanmod2

9cca421 Linux 6.4.0-xanmod2
366e442 x86/sched/itmt: Give all SMT siblings of a core the same priority
865bbb4 x86/sched: Remove SD_ASYM_PACKING from the SMT domain flags
46a8e86 sched/topology: Remove SHARED_CHILD from ASYM_PACKING
8ba54f6 sched/topology: Check SDF_SHARED_CHILD in highest_flag_domain()
9377ad0 sched/fair: Do not even the number of busy CPUs via asym_packing
804d7bb sched/fair: Use the busiest group to set prefer_sibling
db820ae sched/fair: Keep a fully_busy SMT sched group as busiest
63dcd0f sched/fair: Let low-priority cores help high-priority busy SMT cores
c203e33 sched/fair: Simplify asym_packing logic for SMT cores
9821ee5 sched/fair: Only do asym_packing load balancing from fully idle SMT cores
8259315 sched/fair: Move is_core_idle() out of CONFIG_NUMA
e91276b Linux 6.4.0-xanmod1
ff1c161 HID: microsoft: Add more Xbox controller variants
52a6650 HID: stadia: Add Stadia controller rumble support
511a55b HID: shield: Initial driver implementation with Thunderstrike support
0eb11a5 i2c: busses: Add SMBus capability to work with OpenRGB driver control
bd1a582 PCI: Enable overrides for missing ACS capabilities
993a567 sysctl: add sysctl to disallow unprivileged CLONE_NEWUSER by default
816dc1e winesync: Introduce the winesync driver and character device patchset
75e60a9 binder: give binder_alloc its own debug mask file
6cca338 binder: turn into module
9ba50f3 mac80211: ignore AP power level when tx power type is "fixed"
4baa4f1 netfilter: add xt_FLOWOFFLOAD target
00b3e4d netfilter: Add netfilter nf_tables fullcone support
518a7d5 tcp: Add a sysctl to allow TCP window shrinking in order to honor memory limits
8065e9b tcp: Add a sysctl to skip tcp collapse processing when the receive buffer is full
187eba0 net-tcp_bbr: v2: Use correct 64-bit division
d821994 net-tcp_bbr: v2: Fix missing ECT markings on retransmits for BBRv2
e57cba5 net-tcp_bbr: v2: don't assume prior_cwnd was set entering CA_Loss
8faabc3 net-tcp_bbr: v2: remove cycle_rand parameter that is unused in BBRv2
cb8f76f net-tcp_bbr: v2: remove field bw_rtts that is unused in BBRv2
86f989b net-tcp_bbr: v2: remove unnecessary rs.delivered_ce logic upon loss
781e05a net-tcp_bbr: v2: BBRv2 ("bbr2") congestion control for Linux TCP
269808f net-tcp: add fast_ack_mode=1: skip rwin check in tcp_fast_ack_mode__tcp_ack_snd_check()
39ab56a net-tcp: re-generalize TSO sizing in TCP CC module API
798e90d net-tcp: add new ca opts flag TCP_CONG_WANTS_CE_EVENTS
03911c1 net-tcp_bbr: v2: set tx.in_flight for skbs in repair write queue
effd635 net-tcp_bbr: v2: adjust skb tx.in_flight upon split in tcp_fragment()
9dd3130 net-tcp_bbr: v2: adjust skb tx.in_flight upon merge in tcp_shifted_skb()
92f0128 net-tcp_bbr: v2: factor out tx.in_flight setting into tcp_set_tx_in_flight()
a674eda net-tcp_bbr: v2: introduce ca_ops->skb_marked_lost() CC module callback API
3138b0f net-tcp_bbr: v2: export FLAG_ECE in rate_sample.is_ece
91b6613 net-tcp_bbr: v2: count packets lost over TCP rate sampling interval
96decba net-tcp_bbr: v2: snapshot packets in flight at transmit time and pass in rate_sample
c940816 net-tcp_bbr: v2: shrink delivered_mstamp, first_tx_mstamp to u32 to free up 8 bytes
7c99a90 net-tcp_bbr: broaden app-limited rate sample detection
1f653a7 futex: Add entry point for FUTEX_WAIT_MULTIPLE (opcode 31)
b4bf8d1 init: wait for partition and retry scan
00c0a98 drivers: initialize ata before graphics
3820119 locking: rwsem: spin faster
2c82794 firmware: Enable stateless firmware loading
d581f26 intel_rapl: Silence rapl trace debug
24e1299 sched/wait: Do accept() in LIFO order for cache efficiency
81b51cf x86/vdso: Use lfence instead of rep and nop
4329a1c sched/fair: Introduce SIS_CURRENT to wake up short task on current CPU
4d8c51d sched/fair: Record the average duration of a task
1d884ac XANMOD: Makefile: Move ARM and x86 instruction set selection to kernel-wide build
532f169 x86/kconfig: more uarches for kernel 5.17+ [xm_rev2]
8bb8a87 XANMOD: scripts/setlocalversion: Move localversion* files to the end
8a8661e XANMOD: scripts/setlocalversion: remove "+" tag for git repo short version
3bda13c XANMOD: Makefile: Disable GCC vectorization on trees
a643289 XANMOD: lib/kconfig.debug: disable default CONFIG_SYMBOLIC_ERRNAME and CONFIG_DEBUG_BUGVERBOSE
b3d0d7f XANMOD: cpufreq: tunes ondemand and conservative governor for performance
1eb8406 XANMOD: sched/autogroup: Add kernel parameter and config option to enable/disable autogroup feature by default
0b8f917 XANMOD: mm/vmscan: vm_swappiness = 30 decreases the amount of swapping
70ee346 XANMOD: dcache: cache_pressure = 50 decreases the rate at which VFS caches are reclaimed
de8a7f7 XANMOD: kconfig: add 500Hz timer interrupt kernel config option
7f63f5c XANMOD: block: set rq_affinity to force full multithreading I/O requests
d2c77d2 XANMOD: block/mq-deadline: Disable front_merges by default
efd5c99 XANMOD: block/mq-deadline: Increase write priority to improve responsiveness
2ca2d92 XANMOD: rcu: Change sched_setscheduler_nocheck() calls to SCHED_RR policy
c2d353e XANMOD: sched/core: Add yield_type sysctl to reduce or disable sched_yield
e622d7c XANMOD: fair: Set scheduler tunable latencies to unscaled
5f2a186 XANMOD: fair: Increase wake-up granularity time to 3ms
4fb1207 XANMOD: fair: Remove all energy efficiency functions
8cbca94 XANMOD: x86/build: Add more x86_64 optimizations


Download Linux 6.4.0-xanmod2 source from GitHub