A new XanMod Linux Kernel based on the latest Linux Kernel 5.12 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.

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 5.12.0-xanmod1

• 2e46a54 Linux 5.12.0-xanmod1
• fb622f4 XANMOD: config: Initial Linux 5.12-xanmod kernel config
• 4fc3da0 XANMOD: Revert "iio: adc: adi-axi-adc: add proper Kconfig dependencies"
• f050643 android: Export symbols needed by Android drivers
• 88722c8 android: Enable building ashmem and binder as modules
• 075b83c fs/ntfs3: Add MAINTAINERS
• bd3747b fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile
• 763d84a fs/ntfs3: Add Kconfig, Makefile and doc
• ef5be09 fs/ntfs3: Add NTFS journal
• ee34f1b fs/ntfs3: Add compression
• 0690a75 fs/ntfs3: Add attrib operations
• 5ebf9f0 fs/ntfs3: Add file operations and implementation
• cc974e5 fs/ntfs3: Add bitmap
• 291d1a3 fs/ntfs3: Add initialization of super block
• fdf0f8c fs/ntfs3: Add headers and misc files
• 3657551 locking: rwsem: spin faster
• 62f9353 firmware: Enable stateless firmware loading
• 662bdc3 intel_rapl: Silence rapl trace debug
• d65dc49 x86/kconfig: more uarches for kernel 5.8+
• 4a585b5 pci: Enable overrides for missing ACS capabilities
• 3deea6c lib: zstd: Upgrade to latest upstream zstd version 1.4.10
• 4ab13eb lib: zstd: Add decompress_sources.h for decompress_unzstd
• fd3aebb lib: zstd: Add kernel-specific API
• cdbe3af init: add support for zstd compressed modules
• b1c0acc net-tcp_bbr: v2: don't assume prior_cwnd was set entering CA_Loss
• dbe394f net-tcp_bbr: v2: remove cycle_rand parameter that is unused in BBRv2
• 02314d3 net-tcp_bbr: v2: remove field bw_rtts that is unused in BBRv2
• 5cc6335 net-tcp_bbr: v2: remove unnecessary rs.delivered_ce logic upon loss
• 14abdf5 net-tcp_bbr: v2: BBRv2 ("bbr2") congestion control for Linux TCP
• b3bda0a net-tcp: add fast_ack_mode=1: skip rwin check in tcp_fast_ack_mode__tcp_ack_snd_check()
• 2578ee8 net-tcp: re-generalize TSO sizing in TCP CC module API
• 528113e net-tcp: add new ca opts flag TCP_CONG_WANTS_CE_EVENTS
• 5ba707d net-tcp_bbr: v2: set tx.in_flight for skbs in repair write queue
• 04cab5c net-tcp_bbr: v2: adjust skb tx.in_flight upon split in tcp_fragment()
• 30c1b66 net-tcp_bbr: v2: adjust skb tx.in_flight upon merge in tcp_shifted_skb()
• fddae3c net-tcp_bbr: v2: factor out tx.in_flight setting into tcp_set_tx_in_flight()
• 017bb34 net-tcp_bbr: v2: introduce ca_ops->skb_marked_lost() CC module callback API
• ac91660 net-tcp_bbr: v2: export FLAG_ECE in rate_sample.is_ece
• e18459d net-tcp_bbr: v2: count packets lost over TCP rate sampling interval
• 71527a4 net-tcp_bbr: v2: snapshot packets in flight at transmit time and pass in rate_sample
• ef335de net-tcp_bbr: v2: shrink delivered_mstamp, first_tx_mstamp to u32 to free up 8 bytes
• ef83bb5 net-tcp_rate: account for CE marks in rate sample
• bf480a1 net-tcp_rate: consolidate inflight tracking approaches in TCP
• b7f13dd net-tcp_bbr: broaden app-limited rate sample detection
• fb9b1db kernel: Enable waitpid() for futex2
• 063f092 perf bench: Add futex2 benchmark tests
• 3728fd9 selftests: futex2: Add requeue test
• 364c13d selftests: futex2: Add waitv test
• ac6aedc selftests: futex2: Add wouldblock test
• 5210402 selftests: futex2: Add timeout test
• 17273f7 selftests: futex2: Add wake/wait test
• 3a436ba docs: locking: futex2: Add documentation
• dfbd7ee futex2: Add compatibility entry point for x86_x32 ABI
• 55a89f3 futex2: Implement requeue operation
• 4a1a893 futex2: Implement vectorized wait
• ed939f9 futex2: Add support for shared futexes
• e2c4808 futex2: Implement wait and wake functions
• 4dcff2d futex: Implement mechanism to wait on any of several futexes
• 6cb1628 clockevents, hrtimer: Make hrtimer granularity and minimum hrtimeout configurable in sysctl. Set default granularity to 100us and min timeout to 500us
• 3171d4c time: Don't use hrtimer overlay when pm_freezing since some drivers still don't correctly use freezable timeouts.
• 7e6da4f hrtimer: Replace all calls to schedule_timeout_uninterruptible of potentially under 50ms to use schedule_msec_hrtimeout_uninterruptible
• 677095c hrtimer: Replace all calls to schedule_timeout_interruptible of potentially under 50ms to use schedule_msec_hrtimeout_interruptible.
• 659b093 hrtimer: Replace all schedule timeout(1) with schedule_min_hrtimeout()
• e45b16b timer: Convert msleep to use hrtimers when active.
• 5f97a16 time: Special case calls of schedule_timeout(1) to use the min hrtimeout of 1ms, working around low Hz resolutions.
• 9e8b253 hrtimer: Create highres timeout variants of schedule_timeout functions.
• def9494 sysctl: add sysctl to disallow unprivileged CLONE_NEWUSER by default
• 304956b XANMOD: init/Kconfig: Enable -O3 KBUILD_CFLAGS optimization for all architectures
• 510d1f9 XANMOD: lib/kconfig.debug: disable default CONFIG_SYMBOLIC_ERRNAME and CONFIG_DEBUG_BUGVERBOSE
• 3d7289c XANMOD: scripts: disable the localversion "+" tag of a git repo
• b8c6ca8 XANMOD: cpufreq: tunes ondemand and conservative governor for performance
• b321298 XANMOD: mm/vmscan: vm_swappiness = 30 decreases the amount of swapping
• 2fa5776 XANMOD: sched/autogroup: Add kernel parameter and config option to enable/disable autogroup feature by default
• fbe47c7 XANMOD: dcache: cache_pressure = 50 decreases the rate at which VFS caches are reclaimed
• a23c9bb XANMOD: kconfig: set PREEMPT and RCU_BOOST without delay by default
• 101559d XANMOD: kconfig: add 500Hz timer interrupt kernel config option
• 374104a XANMOD: block: set rq_affinity to force full multithreading I/O requests
• 59c8dee XANMOD: block, bfq: change BLK_DEV_ZONED depends to IOSCHED_BFQ
• fb1b8b1 XANMOD: elevator: set default scheduler to bfq for blk-mq
• 9f4ad9e Linux 5.12

Homepage
Download Linux 5.12.0-xanmod1 source from GitHub