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