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Package Details: linux-lqx 6.11.10.lqx1-1

Package Actions

Git Clone URL:	https://aur.archlinux.org/linux-lqx.git (read-only, click to copy)
Package Base:	linux-lqx
Description:	The Linux Liquorix kernel and modules
Upstream URL:	https://liquorix.net/
Keywords:	bbr2 bfq futex pds proton zen
Licenses:	GPL-2.0-only
Provides:	UKSMD-BUILTIN, VHBA-MODULE, VIRTUALBOX-GUEST-MODULES, WIREGUARD-MODULE
Submitter:	akurei
Maintainer:	sir_lucjan (damentz)
Last Packager:	damentz
Votes:	161
Popularity:	1.84
First Submitted:	2011-08-08 16:08 (UTC)
Last Updated:	2024-11-22 16:37 (UTC)

Dependencies (19)

coreutils (coreutils-git^AUR, busybox-coreutils^AUR, coreutils-hybrid-git^AUR, coreutils-hybrid^AUR, coreutils-selinux^AUR, coreutils-uutils^AUR)
initramfs (booster-git^AUR, booster-wip-git^AUR, mkinitcpio-git^AUR, dracut-git^AUR, booster, dracut, mkinitcpio)
kmod (busybox-coreutils^AUR, kmod-git^AUR)
bc (bc-gh^AUR) (make)
cpio (cpio-git^AUR) (make)
gettext (gettext-git^AUR) (make)
git (git-git^AUR, git-gl^AUR) (make)
libelf (elfutils-git^AUR) (make)
pahole (pahole-git^AUR) (make)
perl (perl-git^AUR) (make)
python (python37^AUR, python311^AUR, python310^AUR) (make)
tar (tar-git^AUR, busybox-coreutils^AUR) (make)
xz (xz-git^AUR) (make)
zstd (zstd-git^AUR, zstd-static^AUR) (make)
linux-firmware (linux-libre-firmware^AUR, linux-firmware-xz^AUR, linux-firmware-amd-staging-um5606-git^AUR, linux-firmware-uncompressed^AUR, linux-firmware-git^AUR) (optional) – firmware images needed for some devices
modprobed-db^AUR (modprobed-db-git^AUR) (optional) – Keeps track of EVERY kernel module that has ever been probed - useful for those of us who make localmodconfig
sof-firmware (optional) – firmware images needed for Sound Open Firmware capable devices
uksmd^AUR (uksmd-git^AUR, uksmd-cachyos-nosystemd-git^AUR, uksmd-nosystemd-git^AUR) (optional) – Userspace KSM helper daemon
wireless-regdb (optional) – to set the correct wireless channels of your country

Required by (11)

linux-lqx-docs
linux-lqx-headers
piavpn-bin (requires WIREGUARD-MODULE) (optional)
piavpn-manual-git (requires WIREGUARD-MODULE)
uksmd (requires UKSMD-BUILTIN)
uksmd-cachyos-nosystemd-git (requires UKSMD-BUILTIN) (optional)
uksmd-git (requires UKSMD-BUILTIN)
uksmd-nosystemd-git (requires UKSMD-BUILTIN) (optional)
uksmdstats-git (requires UKSMD-BUILTIN) (optional)
virtualbox-guest-utils-nox-svn (requires VIRTUALBOX-GUEST-MODULES)
virtualbox-guest-utils-svn (requires VIRTUALBOX-GUEST-MODULES)

Sources (3)

Pinned Comments

damentz commented on 2020-08-31 15:22 (UTC) (edited on 2021-12-21 18:25 (UTC) by damentz)

Official binaries of linux-lqx, linux-lqx-headers, and linux-lqx-docs are now available: https://wiki.archlinux.org/index.php/Unofficial_user_repositories#liquorix

Signing key import instructions: sudo pacman-key --keyserver hkps://keyserver.ubuntu.com --recv-keys 9AE4078033F8024D && sudo pacman-key --lsign-key 9AE4078033F8024D

Latest Comments

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Agafron commented on 2018-11-19 19:30 (UTC)

@sir_lucjan, ok, thanks!

sir_lucjan commented on 2018-11-19 19:26 (UTC)

@Agafron

I don't think so.

https://github.com/damentz/liquorix-package/commit/51704fbc01fd69274ce2c236fa2d180276d6aa60

https://github.com/damentz/liquorix-package/commit/7dd11beb3448cb3bca3b175566022d96bb35db46

Agafron commented on 2018-11-19 19:24 (UTC)

@sir_lucjan, ok, need I reinstall package?

$ uname -r

4.18.19-lqx1-1-lqx

sir_lucjan commented on 2018-11-19 19:12 (UTC)

Agafron:

No.

https://github.com/damentz/liquorix-package/commit/7dd11beb3448cb3bca3b175566022d96bb35db46

Agafron commented on 2018-11-19 19:06 (UTC)

@damentz, I have some diff of versions:

1 aur/linux-lqx 4.18.19_2-2 [installed: 4.18.20_1-1] (114) (1,86)

A desktop oriented kernel and modules with Liquorix patches

2 aur/linux-lqx-docs 4.18.19_2-2 [installed: 4.18.20_1-1] (114) (1,86)

Kernel hackers manual - HTML documentation that comes with the linux-lqx.

3 aur/linux-lqx-headers 4.18.19_2-2 [installed: 4.18.20_1-1] (114) (1,86)

Its PKGBUILD mistake?

damentz commented on 2018-11-18 18:39 (UTC) (edited on 2018-11-18 18:40 (UTC) by damentz)

@Terence, that's good information. While you were comparing results, I was measuring the overhead of 1000hz vs 250hz.

With 250hz, the timer consumes about 2-3ms, every second. Increasing this to 1000hz almost quadruples it. At idle, the timer tick consumes 8ms/s, but 5ms/s when the system is under full load (highest frequency). 8ms is less than 1% of the cpu usage of one core on a processor.

On the flip-side, one change I made with switching to 250hz is to re-instate a sampling down factor on ondemand. While the system is idle, it consumes about 3-5ms/s worth of processing to determine the next frequency. While the system is under full load, or near full load, ondemand consumes less than 1ms/s.

One thing I was wondering if you could try is adding rqshare=mc to your kernel parameters. Liquorix is currently configured with smt runqueue sharing, which improves throughput by looking for tasks in the order of cache locality. This might be influencing your underruns in a bad way.

Terence commented on 2018-11-18 15:22 (UTC)

@damentz I tried your suggestion but it didn't seem to improve things. I have between 3 and 4 times less xruns when using 1000Hz tick rate compared to the now default 250Hz. My test settings were a sample rate of 48000 Hz with 64 as the buffer size giving a latency of 1.3ms. I used the performance governor. I normally use 128 as the buffer size but I increased it in order to get more frequent xruns. An other observation is the schedutil is closer to the performance governor in terms of xruns at 1000Hz but there is a bigger gap between both at 250Hz.

I'm still wondering if it wouldn't make sense to keep 250hz as the default as my usage is quite an edge case I would say.

damentz commented on 2018-11-17 19:15 (UTC)

@Terence, try setting rr_interval back to 3 in /proc/sys/kernel. If that doesn't help, then it's the kernel tick frequency.

And thanks for reporting. Con has mentioned that the kernel tick frequency shouldn't matter and that MuQSS is "tickless". This may prove the opposite and that you still need a high frequency tick rate to support soft-realtime applications properly.

Let me know which of the two settings helps you the most - I'll update the configuration accordingly.

Terence commented on 2018-11-16 12:27 (UTC)

@damentz your changes introduced by https://github.com/damentz/liquorix-package/commit/d51bd77f2719e43528898a4db06af34aafd22bdf while being saner defaults degrades realtime audio/midi performances (more frequent xruns). Would only changing back the tick to 1000hz locally enough?

sir_lucjan commented on 2018-11-13 19:47 (UTC)

@Agafron:

Because 4.18.18-lqx patchset includes 4.18.18 from upstream.

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