`perf top` output on 4.15.0-20-generic 13,09% [kernel] [k] acpi_os_read_port 11,81% [kernel] [k] acpi_ns_search_one_scope 6,42% [kernel] [k] acpi_os_write_port 4,62% [kernel] [k] acpi_ut_track_stack_ptr 4,17% [kernel] [k] acpi_ut_trace_ptr 3,42% [kernel] [k] strncpy 3,28% [kernel] [k] __tick_nohz_idle_enter 2,49% [kernel] [k] acpi_ut_status_exit 1,63% [kernel] [k] acpi_ex_resolve_node_to_value 1,50% [kernel] [k] nmi 1,34% libapt-pkg.so.5.0.2 [.] lroundf@plt 1,31% [kernel] [k] acpi_ut_update_ref_count.part.1 1,28% [kernel] [k] acpi_ex_resolve_operands 1,25% [kernel] [k] acpi_ut_add_reference 1,23% [kernel] [k] acpi_ut_acquire_mutex 1,19% libapt-pkg.so.5.0.2 [.] _ZNK8pkgCache11DepIterator10IsNegativeEv 1,18% [kernel] [k] acpi_ns_evaluate 1,12% [kernel] [k] acpi_ut_trace 1,00% libstdc++.so.6.0.25 [.] _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE9_M_createERmm 0,97% [kernel] [k] _find_next_bit 0,92% [kernel] [k] kmem_cache_alloc 0,82% [kernel] [k] rcu_note_context_switch 0,71% [kernel] [k] menu_select 0,67% [kernel] [k] __kmalloc 0,64% [kernel] [k] acpi_ut_valid_internal_object 0,62% [kernel] [k] acpi_ut_update_object_reference 0,57% [kernel] [k] kfree 0,57% libapt-pkg.so.5.0.2 [.] _Z13stringcasecmpN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEES9_S2_S2_ 0,51% libapt-pkg.so.5.0.2 [.] _ZN6FileFd5WriteEPKvy 0,49% [kernel] [k] kmem_cache_free 0,48% [kernel] [k] acpi_ns_lookup 0,48% python3.6 [.] 0x0000000000184852 0,47% [kernel] [k] acpi_hw_validate_io_request 0,45% [kernel] [k] acpi_ut_match_predefined_method 0,42% [kernel] [k] prefetch_freepointer 0,39% [kernel] [k] acpi_ps_get_next_arg 0,39% [kernel] [k] acpi_ut_get_next_predefined_method 0,35% [kernel] [k] acpi_ds_exec_begin_op 0,35% [kernel] [k] acpi_ps_create_op 0,33% [kernel] [k] acpi_ps_get_opcode_info 0,33% [kernel] [k] acpi_ps_parse_loop 0,32% [kernel] [k] acpi_ut_repair_name 0,31% [kernel] [k] acpi_ex_read_data_from_field 0,31% [kernel] [k] acpi_ns_build_normalized_path 0,30% [kernel] [k] acpi_ds_delete_result_if_not_used 0,30% [kernel] [k] acpi_ds_create_operand 0,28% [kernel] [k] acpi_ds_exec_end_op 0,28% [kernel] [k] __schedule 0,27% [kernel] [k] acpi_ds_evaluate_name_path 0,26% libc-2.27.so [.] __GI___strlen_sse2 0,26% [kernel] [k] acpi_ex_name_segment 0,25% [kernel] [k] memset_erms 0,25% python3.6 [.] 0x00000000000436c0 0,24% [kernel] [k] acpi_ns_search_and_enter 0,24% python3.6 [.] 0x0000000000043710
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1087010 Title: kworker uses 70-90% of a CPU core (hyperthreaded) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1087010/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
