A new XanMod Linux Kernel based on the latest Linux Kernel 5.11 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 5.11.0-xanmod1

• a6829e6 Linux 5.11.0-xanmod1
• 1ae1bd1 net-tcp_bbr: v2: don't assume prior_cwnd was set entering CA_Loss
• d424d32 net-tcp_bbr: v2: remove cycle_rand parameter that is unused in BBRv2
• 429afa9 net-tcp_bbr: v2: remove field bw_rtts that is unused in BBRv2
• 119cfaa net-tcp_bbr: v2: remove unnecessary rs.delivered_ce logic upon loss
• 6bc862c net-tcp_bbr: v2: BBRv2 ("bbr2") congestion control for Linux TCP
• be267c7 net-tcp: add fast_ack_mode=1: skip rwin check in tcp_fast_ack_mode__tcp_ack_snd_check()
• 71b9fc8 net-tcp: re-generalize TSO sizing in TCP CC module API
• 4508a81 net-tcp: add new ca opts flag TCP_CONG_WANTS_CE_EVENTS
• 1ede541 net-tcp_bbr: v2: set tx.in_flight for skbs in repair write queue
• 9047211 net-tcp_bbr: v2: adjust skb tx.in_flight upon split in tcp_fragment()
• c9a1234 net-tcp_bbr: v2: adjust skb tx.in_flight upon merge in tcp_shifted_skb()
• b0dfecf net-tcp_bbr: v2: factor out tx.in_flight setting into tcp_set_tx_in_flight()
• cd51808 net-tcp_bbr: v2: introduce ca_ops->skb_marked_lost() CC module callback API
• fc4405e net-tcp_bbr: v2: export FLAG_ECE in rate_sample.is_ece
• 6f48174 net-tcp_bbr: v2: count packets lost over TCP rate sampling interval
• 98712a9 net-tcp_bbr: v2: snapshot packets in flight at transmit time and pass in rate_sample
• d88b195 net-tcp_bbr: v2: shrink delivered_mstamp, first_tx_mstamp to u32 to free up 8 bytes
• f12804e net-tcp_rate: account for CE marks in rate sample
• 7586407 net-tcp_rate: consolidate inflight tracking approaches in TCP
• 5c761d8 net-tcp_bbr: broaden app-limited rate sample detection
• f78bdaf clockevents, hrtimer: Make hrtimer granularity and minimum hrtimeout configurable in sysctl. Set default granularity to 100us and min timeout to 500us
• 5ad7b03 time: Don't use hrtimer overlay when pm_freezing since some drivers still don't correctly use freezable timeouts.
• 9fa58ac hrtimer: Replace all calls to schedule_timeout_uninterruptible of potentially under 50ms to use schedule_msec_hrtimeout_uninterruptible
• 03a69a9 hrtimer: Replace all calls to schedule_timeout_interruptible of potentially under 50ms to use schedule_msec_hrtimeout_interruptible.
• e50ea50 hrtimer: Replace all schedule timeout(1) with schedule_min_hrtimeout()
• feea21a timer: Convert msleep to use hrtimers when active.
• 480a4d2 time: Special case calls of schedule_timeout(1) to use the min hrtimeout of 1ms, working around low Hz resolutions.
• 07d208a hrtimer: Create highres timeout variants of schedule_timeout functions.
• 708926b selftests: futex: Add FUTEX_WAIT_MULTIPLE wake up test
• 1b8d179 selftests: futex: Add FUTEX_WAIT_MULTIPLE wouldblock test
• a831797 selftests: futex: Add FUTEX_WAIT_MULTIPLE timeout test
• 89134fb futex: Implement mechanism to wait on any of several futexes
• 9253d19 locking: rwsem: spin faster
• c0921cf firmware: Enable stateless firmware loading
• 2505ab2 intel_rapl: Silence rapl trace debug
• 17fe52c init: add support for zstd compressed modules
• 31bc0a3 android: Export symbols needed by Android drivers
• 5bffe87 android: Enable building ashmem and binder as modules
• 6c1f4fb sysctl: add sysctl to disallow unprivileged CLONE_NEWUSER by default
• 9971c77 x86/kconfig: Enable additional cpu optimizations for gcc v11.0+ kernel v5.8+
• 4ce6b24 init/Kconfig: Enable -O3 KBUILD_CFLAGS optimization for all architectures
• 66c24af lib/kconfig.debug: disable default CONFIG_SYMBOLIC_ERRNAME and CONFIG_DEBUG_BUGVERBOSE
• 5579778 scripts: disable the localversion "+" tag of a git repo
• fac98c7 cpufreq: tunes ondemand and conservative governor for performance
• 9e54b21 mm/vmscan: vm_swappiness = 30 decreases the amount of swapping
• a9487c0 sched/autogroup: Add kernel parameter and config option to enable/disable autogroup feature by default
• 719a892 dcache: cache_pressure = 50 decreases the rate at which VFS caches are reclaimed
• 9e66901 kconfig: set PREEMPT and RCU_BOOST without delay by default
• 3ef0da4 kconfig: add 500Hz timer interrupt kernel config option
• 1a270ff sched/core: nr_migrate = 256 increases number of tasks to iterate in a single balance run.
• de80a83 block: set rq_affinity to force full multithreading I/O requests
• 04c4db0 block, bfq: change BLK_DEV_ZONED depends to IOSCHED_BFQ
• 3785e98 elevator: set default scheduler to bfq for blk-mq
• f40ddce Linux 5.11

Homepage
Download Linux 5.11.0-xanmod1 source from GitHub