With the increase in power limit by 2W from the thermal tables results
in increase power for CPU driving to higher frequency may be saturating
GPU.
It will take some time to come up with some algorithm. May be part of
another power sharing daemon.
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I've performed measurements with turbostat (kernel 5.13)
With new thermald ("bad" game performance):
GFXAMHz: 400, PgkWatt: 16.56, CorWatt: 7.34, GFXWatt: 3.88
With old thermald (good performance):
GFXAMhz: 650, PkgWatt: 14.86 CorWatt: 3.81, GFXWatt: 4.45
About game mode daemon: I have gamemode in
** Attachment added: "turbostat with old thermald"
https://bugs.launchpad.net/ubuntu/+source/thermald/+bug/1944389/+attachment/5531776/+files/old.jpg
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Looks like some game mode daemon or program, which is changing parameters for
cpu frequency.
Like energy performance preference was changed to balance_power.
Need to find out what is that program, may be some tuning can be done there as
it knows game is going to be played.
Also this will be help
I also checked with GTA IV game -- with the new thermald performance also
decreased. Average FPS for in-game benchmark drop from 53 to 42 (I run only one
attempt for each thermald version) (and game became unplayable as minimum FPS
in complex scenes became less than 30).
GTA IV has a different C
balance_power is not a kernel default, so something on the system
running which is changing cpufreq parameters. "balamce_performance" is
the default.
Anyway thermald is setting the package power limit as per thermal
tables. There is no power sharing info in the tables.
We have this power sharing
Checked with kernel 5.13.0-1014-oem
(5.11.0-37-generic is not usable for this laptop as wifi and external display
are not recognized)
Both
# echo idle > workload_type
or
# echo bursty > workload_type
are not helpful.
Also balance_power is in
/sys/devices/system/cpu/cpufreq/policy$i/energy_perform
Thanks. I can buy, I don't have gaming skills!
You already indicated that limiting cpu frequency or removing turbo boost helps.
I want to see if the energy_performance_preference or workload_request works.
"workload_request" will be the best as this is one setting for all CPUs.
If this works then
Thank you, Srinivas! I'll try to perform the tests with the proposed
configuration on the weekend.
Game: https://store.steampowered.com/app/20510/STALKER_Clear_Sky/ it costs 9.99
EUR but I'll be happy to buy it for your for the test purposes.
To run it with Steam on Linux one should enable "Stea
It will also be great if you can specify how to download and play the
game to get to this condition.
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Title:
Thermald 1.9.1-1ubuntu0.6 keeps Tige
In your current 5.10 kernel try this setting:
#for i in {0..7}; do echo balance_power >
/sys/devices/system/cpu/cpufreq/policy$i/energy_performance_preference;
done
confirm with
for i in {0..7}; do cat
/sys/devices/system/cpu/cpufreq/policy$i/energy_performance_preference; done
balance_power
bal
I have the same XPS 9310 with
5.11.0-34-generic #36-Ubuntu SMP Thu Aug 26 19:22:09 UTC 2021 x86_64 x86_64
x86_64 GNU/Linux
# tree /sys/bus/pci/devices/\:00\:04.0
/sys/bus/pci/devices/:00:04.0
...
...
├── uevent
├── vendor
└── workload_request
├── workload_available_types
└── work
This is just long term package power limit after reaching 53C
"/sys/class/powercap/intel-rapl-mmio/intel-rapl-mmio\:0/device/intel-rapl-mmio\:0/constraint_0_power_limit_uw".
Doesn't include off package limit.
You need 5.11 kernel atleast for those workload controls. Tiger lake
controls patches ar
Srinvas, thank you for the explanation. But could you also explain what
do you mean by
> It only reduced total power
Are these 15 Watts limit (after reaching 53 degrees) for the whole Core i7 chip
(CPU+GPU+..) or for GPU chiplet only?
If this limit is for the whole chip than something is wrong w
I can give you some other knob, please try that whether this improves
while playing this game.
#cd /sys/bus/pci/devices/:00:04.0/workload_request
#echo idle > workload_type
or
# echo bursty > workload_type
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Bugs, which
Data from /sys/class/thermal are usually stale. They are left from previous
platforms. The actual limits comes from adaptive tables based on the condition
match. This is what OEM defined for the system.
Also without adaptive power limits are insane here.
Thermal doesn't reduce GPU frequency. It
I've backported the latest thermald to older releases to make testing
easier:
https://launchpad.net/~colin-king/+archive/ubuntu/thermald-backports
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I just checked old and new behavior again.
First of all it's not clear for me from where this value of 53 is taken,
according to the data in /sys/class/thermal/thermal_zone5 (THP)
trip_point_0_hyst:4000
trip_point_0_temp:-274000
trip_point_0_type:passive
trip_point_1_hyst:4000
trip_point_1_temp:-2
There is a temperature sensor "THP" which has a limit of 53C. This
temperature exceeded which calls for thermal throttling to limit to 15W
by thermal tables on this system.
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Here is the log
GPU frequency decreased to 400MHz at ~23:50 UTC+3
** Attachment added: "log.txt"
https://bugs.launchpad.net/ubuntu/+source/thermald/+bug/1944389/+attachment/5528265/+files/log.txt
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Run the github version
#systemctl disable thermald
#thermald --no-daemon --loglevel=info --adaptive
Attach the log. It is possible that skin temperature a limit
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I've checked with the latest git version -- it has the same problem.
New behavior (git thermald, as well as latest Ubuntu version with backports):
thermald keeps the GPU frequency at 400 Hz after reaching 85 degrees, even if
temperature decreases to 74.
After the thermal regime stabilizes there
** Tags added: regression-update
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Title:
Thermald 1.9.1-1ubuntu0.6 keeps Tigerlake GPU frequency on 400 MHz
To manage notifications about this b
Try the upstream version
https://github.com/intel/thermal_daemon
May be missing some backports.
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Title:
Thermald 1.9.1-1ubuntu0.6 keeps Tigerlak
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