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handle sysctl tunable dict

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This commit is contained in:
Josh Lay 2024-03-24 18:55:50 -05:00
parent 1a72de4828
commit 3d2a88c12b
Signed by: jlay
GPG key ID: B265E45CACAD108A
2 changed files with 18 additions and 24 deletions
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13
host_vars/localhost.yml
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@ -26,3 +26,16 @@ gpu_mv_offset: "+125" # add 125mV or 0.125V
# gpu_mv_offset: "+50" # add 50mV or 0.05V
# gpu_mv_offset: "+75" # add 75mV or 0.075V
# '-50' undervolts GPU core voltage 50mV or 0.05V; untested - here be dragons/instability
# optional kernel parameters to set as well
sysctl: # quote ints/cast to string to avoid surprises
kernel.dmesg_restrict: '0' # allow regular users to see the kernel ring buffer
net.core.default_qdisc: fq # congestion control
net.ipv4.tcp_congestion_control: bbr2 # cong. control part 2
net.core.rmem_max: '33554432'
net.core.wmem_max: '33554432'
dev.raid.speed_limit_min: '2000000'
dev.raid.speed_limit_max: '6000000'
vm.compaction_proactiveness: '30' # improve THP allocation latency, compact in background
vm.page_lock_unfairness: '1' # make page lock theft slightly more fair
vm.max_map_count: '1048576' # allow some games to run (eg: DayZ)

29
roles/tuned_amdgpu/templates/tuned.conf.j2
View file

@ -2,35 +2,16 @@
include={{ item.1 }}
summary={{ item.1 }} + TCP/RAID tweaks + AMDGPU {{ item.0 }}
{% if sysctl is defined %}
[sysctl]
# allow regular users to see the kernel ring buffer
kernel.dmesg_restrict=0
net.core.default_qdisc=fq
# 'bbr2' requires a [modified] supporting kernel - stock Fedora kernels do *not* support it (currently)
# eg: 'kernel-xanmode-edge' from COPR 'rmnscnce/kernel-xanmod'
net.ipv4.tcp_congestion_control=bbr2
net.core.rmem_max=33554432
net.core.wmem_max=33554432
dev.raid.speed_limit_min=1000000
dev.raid.speed_limit_max=6000000
# improve THP allocation latency, compact in background
vm.compaction_proactiveness=30
# make page lock theft slightly more fair
vm.page_lock_unfairness=1
# allow some games to run (eg: DayZ)
vm.max_map_count=1048576
{% for _sysctl, value in sysctl.items() %}
{{ _sysctl }}={{ value }}
{% endfor %}
{% endif %}
# reference/execute AMDGPU control script
# used because some sysfs interfaces are transactional
# cannot be set by a single param in 'tuned'/[sysfs]
[gpuclockscript]
type=script
script=${i:PROFILE_DIR}/amdgpu-clock.sh
# for SSDs with no RPM, set no IO scheduler
[ssdnosched]
type=disk
devices_udev_regex=(ID_ATA_ROTATION_RATE_RPM=0)
# elevator=none
elevator=kyber
# elevator=mq-deadline