I can confirm this also happens on Plucky as well running 6.14.0-29-generic, on my System76 Pangolin (128GB/16-core AMD Ryzen 9 8945HS w/ Radeon 780M Graphics), and absolutely crushes IO, everything stutters, lags, drags every few seconds. Network, video, audio stutters, and I get constant notifications that the battery is charging/discharging/charging, etc.
-- Boot c9957fddf7a143f2bcf6b79618c0da9e -- Sep 18 09:24:44 kernel: workqueue: acpi_os_execute_deferred hogged CPU for >10000us 4 times, consider switching to WQ_UNBOUND Sep 18 09:24:44 kernel: workqueue: power_supply_changed_work hogged CPU for >10000us 4 times, consider switching to WQ_UNBOUND Sep 18 09:24:44 kernel: workqueue: power_supply_changed_work hogged CPU for >10000us 5 times, consider switching to WQ_UNBOUND Sep 18 09:24:44 kernel: workqueue: acpi_os_execute_deferred hogged CPU for >10000us 5 times, consider switching to WQ_UNBOUND Sep 18 09:24:45 kernel: workqueue: acpi_ec_event_processor hogged CPU for >10000us 4 times, consider switching to WQ_UNBOUND Sep 18 09:24:46 kernel: workqueue: acpi_os_execute_deferred hogged CPU for >10000us 7 times, consider switching to WQ_UNBOUND Sep 18 09:24:48 kernel: workqueue: power_supply_changed_work hogged CPU for >10000us 7 times, consider switching to WQ_UNBOUND Sep 18 09:24:48 kernel: workqueue: acpi_ec_event_processor hogged CPU for >10000us 5 times, consider switching to WQ_UNBOUND Sep 18 09:25:00 kernel: workqueue: acpi_os_execute_deferred hogged CPU for >10000us 11 times, consider switching to WQ_UNBOUND Sep 18 09:25:04 kernel: workqueue: acpi_ec_event_processor hogged CPU for >10000us 7 times, consider switching to WQ_UNBOUND Sep 18 09:25:04 kernel: workqueue: power_supply_changed_work hogged CPU for >10000us 11 times, consider switching to WQ_UNBOUND Sep 18 09:25:38 kernel: workqueue: acpi_ec_event_processor hogged CPU for >10000us 11 times, consider switching to WQ_UNBOUND Sep 18 09:25:49 kernel: workqueue: acpi_os_execute_deferred hogged CPU for >10000us 19 times, consider switching to WQ_UNBOUND Sep 18 09:27:01 kernel: workqueue: power_supply_changed_work hogged CPU for >10000us 19 times, consider switching to WQ_UNBOUND Sep 18 09:28:19 kernel: workqueue: acpi_ec_event_processor hogged CPU for >10000us 19 times, consider switching to WQ_UNBOUND Sep 18 09:28:38 kernel: workqueue: acpi_os_execute_deferred hogged CPU for >10000us 35 times, consider switching to WQ_UNBOUND Sep 18 09:33:23 kernel: workqueue: power_supply_changed_work hogged CPU for >10000us 35 times, consider switching to WQ_UNBOUND Sep 18 09:34:39 kernel: workqueue: acpi_os_execute_deferred hogged CPU for >10000us 67 times, consider switching to WQ_UNBOUND This does not happen on the 6.12.10-76061203-generic (System76 specific) kernel. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe-6.8 in Ubuntu. https://bugs.launchpad.net/bugs/2112307 Title: Processes hogging CPU Status in linux-hwe-6.8 package in Ubuntu: Confirmed Bug description: We are seeing processes hogging the cpu. This problem does not appear in kernel 5.15 but does appear in later kernels. The main problem we are seeing is : workqueue: drm_fb_helper_damage_work hogged CPU for >10000us 8 times, consider switching to WQ_UNBOUND but other workqueues have also been affected. Please see https://bugs.launchpad.net/ubuntu/+source/linux-oem-6.5/+bug/2038492 I am also seeing workqueue: inode_switch_wbs_work_fn hogged. Use the following command in kernel 6.8 sudo grep hogged /var/log/kern.log sudo grep hogged /var/log/kern.log.1 I don't see the problem in kernel 5.15. We are testing 5G and we are seeing added latencies in our test results. This appears to be after we have updated our kernel. 5.15.0-139-generic modinfo drm_kms_helper filename: /lib/modules/5.15.0-139-generic/kernel/drivers/gpu/drm/drm_kms_helper.ko license: GPL and additional rights description: DRM KMS helper author: David Airlie, Jesse Barnes license: GPL srcversion: B10D61A5F1428A1941A4519 depends: drm,cec,fb_sys_fops,syscopyarea,sysfillrect,sysimgblt retpoline: Y intree: Y name: drm_kms_helper vermagic: 5.15.0-139-generic SMP mod_unload modversions 6.8.0-52-generic modinfo drm_kms_helper name: drm_kms_helper filename: (builtin) import_ns: DMA_BUF license: GPL and additional rights file: drivers/gpu/drm/drm_kms_helper description: DRM KMS helper author: David Airlie, Jesse Barnes license: GPL file: drivers/gpu/drm/drm_kms_helper parm: fbdev_emulation:Enable legacy fbdev emulation [default=true] (bool) parm: drm_fbdev_overalloc:Overallocation of the fbdev buffer (%) [default=100] (int) parm: poll:bool To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.8/+bug/2112307/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
