Package: src:linux
Version: 6.0.3-1
Severity: important
Hello,
starting with 5.18.0-3-amd64 I experience significant performance loss
(clock speed slows down to 400 MHz) on higher CPU usage.
After checking for differences I figured out that the long-term intel rapl mmio
power limit now defaults to 5W (AC mode) / 10W (battery mode) compared
to 25W with 5.18.0-2-amd64:
AC mode:
$ uname -a
Linux sulfur 6.0.0-2-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.0.3-1
(2022-10-21) x86_64 GNU/Linux
$ cat /sys/class/power_supply/AC/online
1
$ cat
/sys/class/powercap/intel-rapl-mmio/intel-rapl-mmio\:0/constraint_0_power_limit_uw
5000000
Battery mode:
$ uname -a
Linux sulfur 6.0.0-2-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.0.3-1
(2022-10-21) x86_64 GNU/Linux
$ cat /sys/class/power_supply/AC/online
0
$ cat
/sys/class/powercap/intel-rapl-mmio/intel-rapl-mmio\:0/constraint_0_power_limit_uw
10000000
Note that the limit in battery mode is actually higher than in AC mode.
Booting into 5.18.0-2-amd64 the default power limit is 25W:
AC mode:
$ uname -a
Linux sulfur 5.18.0-2-amd64 #1 SMP PREEMPT_DYNAMIC Debian 5.18.5-1
(2022-06-16) x86_64 GNU/Linux
$ cat /sys/class/power_supply/AC/online
1
$ cat
/sys/class/powercap/intel-rapl-mmio/intel-rapl-mmio\:0/constraint_0_power_limit_uw
25000000
Battery mode:
$ uname -a
Linux sulfur 5.18.0-2-amd64 #1 SMP PREEMPT_DYNAMIC Debian 5.18.5-1
(2022-06-16) x86_64 GNU/Linux
$ cat /sys/class/power_supply/AC/online
0
$ cat
/sys/class/powercap/intel-rapl-mmio/intel-rapl-mmio\:0/constraint_0_power_limit_uw
25000000
I can manually set the power limit to 25000000 (fixing the performance
issues), but the embedded controller changes it back to 5000000 after
some time.
Please let me know if I can provide any further information.
Best regards
Hannes
-- Package-specific info:
** Version:
Linux version 6.0.0-2-amd64 (debian-ker...@lists.debian.org) (gcc-12 (Debian
12.2.0-7) 12.2.0, GNU ld (GNU Binutils for Debian) 2.39) #1 SMP PREEMPT_DYNAMIC
Debian 6.0.3-1 (2022-10-21)
** Command line:
BOOT_IMAGE=/vmlinuz-6.0.0-2-amd64 root=/dev/mapper/sulfur--vg-root ro
apparmor=0 quiet
** Not tainted
** Kernel log:
Unable to read kernel log; any relevant messages should be attached
** Model information
sys_vendor: LENOVO
product_name: 20N2CTO1WW
product_version: ThinkPad T490
chassis_vendor: LENOVO
chassis_version: None
bios_vendor: LENOVO
bios_version: N2IET99W (1.77 )
board_vendor: LENOVO
board_name: 20N2CTO1WW
board_version: SDK0R32862 WIN
** Loaded modules:
snd_seq_dummy
snd_hrtimer
snd_seq
snd_seq_device
ctr
ccm
xt_CHECKSUM
nft_chain_nat
xt_MASQUERADE
nf_nat
nf_conntrack
nf_defrag_ipv6
nf_defrag_ipv4
xt_tcpudp
nft_compat
bridge
stp
llc
nf_tables
libcrc32c
rfcomm
cmac
algif_hash
algif_skcipher
af_alg
bnep
nfnetlink
nls_ascii
nls_cp437
vfat
fat
btusb
btrtl
btbcm
btintel
btmtk
bluetooth
uvcvideo
videobuf2_vmalloc
jitterentropy_rng
videobuf2_memops
videobuf2_v4l2
videobuf2_common
sha512_ssse3
sha512_generic
videodev
drbg
ansi_cprng
mc
ecdh_generic
ecc
intel_pmc_core_pltdrv
intel_pmc_core
snd_sof_pci_intel_cnl
snd_sof_intel_hda_common
soundwire_intel
soundwire_generic_allocation
soundwire_cadence
snd_sof_intel_hda
snd_sof_pci
snd_sof_xtensa_dsp
snd_sof
snd_sof_utils
soundwire_bus
snd_soc_skl
x86_pkg_temp_thermal
snd_soc_hdac_hda
intel_powerclamp
coretemp
snd_hda_ext_core
snd_soc_sst_ipc
snd_hda_codec_hdmi
snd_soc_sst_dsp
iTCO_wdt
kvm_intel
snd_soc_acpi_intel_match
rtsx_pci_sdmmc
intel_pmc_bxt
iTCO_vendor_support
snd_soc_acpi
iwlmvm
ee1004
watchdog
mei_hdcp
mmc_core
snd_ctl_led
intel_rapl_msr
snd_soc_core
wmi_bmof
snd_hda_codec_realtek
intel_wmi_thunderbolt
kvm
snd_compress
mac80211
snd_hda_codec_generic
irqbypass
snd_hda_intel
crc32_pclmul
libarc4
snd_intel_dspcfg
snd_intel_sdw_acpi
ghash_clmulni_intel
snd_hda_codec
iwlwifi
rapl
e1000e
snd_hda_core
intel_cstate
snd_hwdep
xhci_pci
snd_pcm
intel_uncore
xhci_hcd
pcspkr
joydev
ptp
i2c_i801
thinkpad_acpi
efi_pstore
pps_core
snd_timer
i2c_smbus
cfg80211
thunderbolt
mei_me
processor_thermal_device_pci_legacy
usbcore
nvram
processor_thermal_device
rtsx_pci
platform_profile
mei
processor_thermal_rfim
ucsi_acpi
ledtrig_audio
processor_thermal_mbox
typec_ucsi
intel_lpss_pci
processor_thermal_rapl
intel_lpss
snd
idma64
intel_rapl_common
usb_common
roles
intel_pch_thermal
soundcore
intel_soc_dts_iosf
typec
wmi
rfkill
battery
int3403_thermal
int340x_thermal_zone
ac
int3400_thermal
button
acpi_thermal_rel
acpi_pad
msr
parport_pc
ppdev
lp
parport
fuse
configfs
efivarfs
ip_tables
x_tables
autofs4
ext4
crc16
mbcache
jbd2
crc32c_generic
dm_crypt
dm_mod
i915
i2c_algo_bit
drm_buddy
drm_display_helper
drm_kms_helper
cec
rc_core
crc32c_intel
ttm
nvme
nvme_core
drm
aesni_intel
t10_pi
psmouse
crypto_simd
cryptd
crc64_rocksoft
evdev
crc64
crc_t10dif
serio_raw
crct10dif_generic
crct10dif_pclmul
crct10dif_common
video
-- System Information:
Debian Release: bookworm/sid
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable'), (1,
'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 6.0.0-2-amd64 (SMP w/8 CPU threads; PREEMPT)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8),
LANGUAGE=en_GB:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages linux-image-6.0.0-2-amd64 depends on:
ii initramfs-tools [linux-initramfs-tool] 0.142
ii kmod 30+20220905-1
ii linux-base 4.9
Versions of packages linux-image-6.0.0-2-amd64 recommends:
pn apparmor <none>
pn firmware-linux-free <none>
Versions of packages linux-image-6.0.0-2-amd64 suggests:
pn debian-kernel-handbook <none>
ii grub-efi-amd64 2.06-4
pn linux-doc-6.0 <none>
Versions of packages linux-image-6.0.0-2-amd64 is related to:
pn firmware-amd-graphics <none>
pn firmware-atheros <none>
pn firmware-bnx2 <none>
pn firmware-bnx2x <none>
pn firmware-brcm80211 <none>
pn firmware-cavium <none>
pn firmware-intel-sound <none>
pn firmware-intelwimax <none>
pn firmware-ipw2x00 <none>
pn firmware-ivtv <none>
ii firmware-iwlwifi 20210818-1
pn firmware-libertas <none>
pn firmware-linux-nonfree <none>
ii firmware-misc-nonfree 20210818-1
pn firmware-myricom <none>
pn firmware-netxen <none>
pn firmware-qlogic <none>
ii firmware-realtek 20210818-1
pn firmware-samsung <none>
pn firmware-siano <none>
pn firmware-ti-connectivity <none>
pn xen-hypervisor <none>
-- no debconf information
