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Improve performance and harden kernel

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Tweaks some memory management, kernel, and networking parameters to improve performance and harden. See https://wiki.archlinux.org/title/Sysctl
This commit is contained in:
Thomas Duckworth
2025-09-19 20:43:35 +10:00
parent 9f0d97f98d
commit d0d635e480
1 changed files with 9 additions and 0 deletions
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mkosi.extra/usr/lib/sysctl.d/00-kde-linux-default.conf
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@@ -11,8 +11,17 @@ vm.page-cluster = 0
vm.watermark_boost_factor = 0
# Make kswapd more aggressive because zram is cheap
vm.watermark_scale_factor = 125
# Many Windows games need this disabled to run with proper performance; they abuse split locks
kernel.split_lock_mitigate = 0
# Not needed for us; disabling it increases speed and reduces power consumption
kernel.nmi_watchdog = 0
# Disable kexec as a security measure
kernel.kexec_load_disabled=1
# Use 'bbr' to achieve higher throughput when sending to high-latency destinations.
# Also 'fq' to prevent one greedy app from causing lag (bufferbloat) for everything else.
# `bbr` relies on pacing, and thus performs better with the `fq` qdisc.
net.ipv4.tcp_congestion_control = bbr
net.core.default_qdisc = fq
# Ensure that applications don't break/complain from hitting the limit
fs.inotify.max_user_instances = 8192
fs.inotify.max_user_watches = 524288