# Samples: 24816 # # Overhead Command Shared Object Symbol # ........ ....... ....................... ...... # 15.90% dd [kernel] [k] __copy_to_user_ll 7.04% perf [kernel] [k] generic_file_buffered_write 4.47% perf [kernel] [k] __generic_file_aio_write 2.28% perf [kernel] [k] sysenter_past_esp 2.28% perf [kernel] [k] iov_iter_advance 2.26% perf [kernel] [k] generic_file_aio_write 2.19% perf [kernel] [k] __jfs_getxattr 2.15% perf [kernel] [k] nobh_write_end 2.15% perf [kernel] [k] nobh_write_begin 2.10% perf [kernel] [k] do_sync_write 2.07% perf [kernel] [k] iov_iter_copy_from_user_atomic 2.04% perf [kernel] [k] vfs_write 1.91% perf [kernel] [k] getnstimeofday 1.82% perf [kernel] [k] find_get_page 1.66% perf [kernel] [k] generic_segment_checks 1.61% perf [kernel] [k] ea_get 1.58% perf [kernel] [k] rw_verify_area 1.37% perf [kernel] [k] jfs_write_begin 1.34% dd [kernel] [k] __bio_add_page 1.31% perf [kernel] [k] copy_to_user 1.18% perf [kernel] [k] balance_dirty_pages_ratelimited_nr 1.17% perf [kernel] [k] sys_write 1.16% perf [kernel] [k] iov_iter_fault_in_readable 1.10% perf [vdso] [.] 0x000000ffffe424 1.06% dd [kernel] [k] get_page_from_freelist 1.02% perf [kernel] [k] fget_light 0.96% perf [kernel] [k] acpi_pm_read 0.93% perf [kernel] [k] sys_gettimeofday 0.93% perf [kernel] [k] grab_cache_page_write_begin 0.85% perf [kernel] [k] __set_page_dirty_buffers 0.84% perf [kernel] [k] __mark_inode_dirty 0.82% dd [kernel] [k] __blk_recalc_rq_segments 0.80% perf [kernel] [k] fsnotify 0.77% perf [kernel] [k] kfree 0.73% perf [kernel] [k] file_update_time 0.69% perf [kernel] [k] inotify_inode_queue_event 0.67% perf [kernel] [k] generic_write_sync 0.67% perf [kernel] [k] __copy_from_user_ll_nozero 0.66% perf [kernel] [k] inotify_dentry_parent_queue_event 0.65% perf [kernel] [k] put_page 0.64% dd [kernel] [k] __make_request 0.63% perf [kernel] [k] jfs_getxattr 0.62% perf [kernel] [k] do_gettimeofday 0.60% perf [kernel] [k] find_lock_page 0.59% perf [kernel] [k] __rcu_read_unlock 0.56% perf [kernel] [k] radix_tree_lookup_slot 0.54% perf [kernel] [k] __fsnotify_parent 0.54% perf [kernel] [k] ea_release 0.53% perf [kernel] [k] strncmp 0.52% perf [kernel] [k] file_remove_suid 0.51% perf [kernel] [k] unlock_page 0.50% perf [kernel] [k] timespec_trunc 0.47% perf [kernel] [k] T.1339 0.47% perf [kernel] [k] current_fs_time 0.46% perf [kernel] [k] cap_inode_need_killpriv 0.45% perf /home/cloos/bin/perf [.] __cmd_record 0.45% perf [kernel] [k] should_remove_suid 0.42% perf [kernel] [k] schedule 0.41% perf [kernel] [k] strlen 0.38% dd [kernel] [k] usb_hcd_irq [usbcore] 0.36% perf [kernel] [k] current_kernel_time 0.36% perf [kernel] [k] _cond_resched 0.35% dd [kernel] [k] do_mpage_readpage 0.34% perf [kernel] [k] jfs_dirty_inode 0.33% perf [kernel] [k] mark_page_accessed 0.33% dd [kernel] [k] get_request 0.31% perf [kernel] [k] __rcu_read_lock 0.30% perf [kernel] [k] cap_file_permission 0.29% perf [kernel] [k] set_page_dirty 0.27% perf [kernel] [k] mutex_lock 0.27% perf [kernel] [k] __wake_up_bit 0.27% perf [kernel] [k] down_read 0.22% perf [kernel] [k] up_read 0.22% perf [kernel] [k] security_file_permission 0.22% perf [kernel] [k] mutex_unlock 0.21% dd [kernel] [k] blk_rq_init 0.20% dd [kernel] [k] yenta_interrupt 0.20% perf [kernel] [k] security_inode_need_killpriv 0.19% perf [kernel] [k] sysenter_do_call 0.19% dd [kernel] [k] acpi_pm_read 0.17% perf [kernel] [k] vsnprintf 0.17% dd [kernel] [k] add_to_page_cache_locked 0.16% dd [kernel] [k] generic_make_request 0.15% dd [kernel] [k] generic_file_aio_read 0.15% perf [kernel] [k] extAlloc 0.15% dd [kernel] [k] T.1339 0.12% perf [kernel] [k] number 0.12% perf [kernel] [k] dbAlloc 0.12% perf [kernel] [k] usb_hcd_irq [usbcore] 0.12% dd [kernel] [k] bio_add_page 0.12% dd [kernel] [k] radix_tree_lookup_slot 0.11% perf [kernel] [k] format_decode 0.11% dd [kernel] [k] handle_IRQ_event 0.11% dd [kernel] [k] irq_handler 0.10% dd [kernel] [k] file_read_actor 0.10% dd [kernel] [k] kmem_cache_alloc 0.10% dd [kernel] [k] init_request_from_bio 0.10% perf [kernel] [k] xtSearch 0.10% dd [kernel] [k] __alloc_pages_nodemask 0.09% perf [kernel] [k] mnt_drop_write 0.09% perf [kernel] [k] mnt_clone_write 0.09% dd [kernel] [k] find_get_page 0.08% perf [kernel] [k] copy_page_range 0.08% perf [kernel] [k] __set_page_dirty 0.08% perf [kernel] [k] ehci_watchdog [ehci_hcd] 0.07% dd [kernel] [k] blk_rq_bio_prep 0.07% dd [kernel] [k] radix_tree_lookup 0.07% perf [kernel] [k] do_sys_poll 0.07% dd [kernel] [k] ____pagevec_lru_add 0.06% perf [kernel] [k] handle_IRQ_event 0.06% perf [kernel] [k] get_page_from_freelist 0.06% perf [kernel] [k] dbAllocBits 0.06% perf /lib/libc-2.11.so [.] __GI___gettimeofday_internal 0.06% dd [kernel] [k] ext4_get_blocks 0.06% perf [kernel] [k] hrtimer_try_to_cancel 0.06% perf [kernel] [k] xtLookup 0.06% dd [kernel] [k] put_page 0.06% dd [kernel] [k] ext4_ext_get_blocks 0.06% dd [kernel] [k] cfq_set_request 0.06% perf [kernel] [k] __wake_up 0.06% dd [kernel] [k] ondemand_readahead 0.05% perf [kernel] [k] do_page_fault 0.05% dd [kernel] [k] __rcu_read_unlock 0.05% dd [kernel] [k] __lru_cache_add 0.05% dd [kernel] [k] mpage_readpages 0.05% dd [kernel] [k] do_page_fault 0.05% perf /lib/libpthread-2.11.so [.] __libc_write 0.05% dd [kernel] [k] handle_mm_fault 0.05% dd [kernel] [k] radix_tree_preload 0.04% perf [kernel] [k] extHint 0.04% perf [kernel] [k] yenta_interrupt 0.04% dd [kernel] [k] __lock_page_killable 0.04% dd [kernel] [k] __do_page_cache_readahead 0.04% dd [kernel] [k] submit_bio 0.04% dd [kernel] [k] zone_watermark_ok 0.04% dd [kernel] [k] bio_init 0.04% dd [kernel] [k] scsi_dispatch_cmd 0.04% perf [kernel] [k] __hrtimer_start_range_ns 0.04% perf [kernel] [k] add_to_page_cache_locked 0.04% perf [kernel] [k] __do_fault 0.04% dd [kernel] [k] prepare_to_wait_exclusive 0.04% dd [kernel] [k] __rcu_read_lock 0.04% dd [kernel] [k] add_to_page_cache_lru 0.04% dd [kernel] [k] page_cache_async_readahead 0.04% dd [kernel] [k] unmap_vmas 0.04% dd [kernel] [k] scsi_request_fn 0.03% perf [kernel] [k] kmem_cache_alloc 0.03% perf [kernel] [k] mnt_want_write_file 0.03% perf /lib/libpthread-2.11.so [.] __write_nocancel 0.03% dd [kernel] [k] free_hot_cold_page 0.03% dd [kernel] [k] next_zones_zonelist 0.03% dd [kernel] [k] ext4_data_block_valid 0.03% dd [kernel] [k] ioread8 0.03% perf [kernel] [k] __find_get_block_slow 0.03% perf [kernel] [k] jfs_get_block 0.03% perf [kernel] [k] dbAllocDmap 0.03% perf [kernel] [k] dbAllocNext 0.03% perf [kernel] [k] __get_metapage 0.03% perf /lib/libc-2.11.so [.] __libc_poll 0.03% dd [kernel] [k] sync_page 0.03% dd [kernel] [k] mark_page_accessed 0.03% dd [kernel] [k] bio_alloc_bioset 0.03% dd [kernel] [k] blk_backing_dev_unplug 0.02% perf [kernel] [k] do_wp_page 0.02% perf [kernel] [k] show_map_vma 0.02% perf [kernel] [k] schedule_hrtimeout_range 0.02% dd [kernel] [k] mempool_alloc_slab 0.02% dd [kernel] [k] block_sync_page 0.02% dd [kernel] [k] mpage_alloc 0.02% dd [kernel] [k] get_io_context 0.02% perf [kernel] [k] __do_softirq 0.02% perf [kernel] [k] add_to_page_cache_lru 0.02% perf [kernel] [k] __lru_cache_add 0.02% perf [kernel] [k] poll_schedule_timeout 0.02% perf [kernel] [k] prepend 0.02% perf [kernel] [k] xtExtend 0.02% perf [kernel] [k] release_metapage 0.02% dd [kernel] [k] __do_softirq 0.02% dd [kernel] [k] ktime_get_ts 0.02% dd [kernel] [k] ra_submit 0.02% dd [kernel] [k] __do_fault 0.02% dd [kernel] [k] blk_queue_bounce 0.02% dd [kernel] [k] mdio_ctrl_hw 0.02% dd [kernel] [k] __wait_on_bit_lock 0.02% dd [kernel] [k] down_read 0.02% perf [kernel] [k] ktime_get_ts 0.02% perf [kernel] [k] perf_poll 0.02% perf [kernel] [k] handle_mm_fault 0.02% perf [kernel] [k] poll_freewait 0.02% perf [kernel] [k] d_path 0.02% dd [kernel] [k] __delayacct_blkio_end 0.02% dd [kernel] [k] mempool_alloc 0.02% dd [kernel] [k] release_pages 0.02% dd [kernel] [k] bio_get_nr_vecs 0.02% dd [kernel] [k] bio_phys_segments 0.02% dd [kernel] [k] current_io_context 0.02% dd [kernel] [k] blk_recount_segments 0.02% dd [kernel] [k] io_schedule 0.01% perf [kernel] [k] remove_wait_queue 0.01% perf [kernel] [k] rcu_sched_qs 0.01% perf [kernel] [k] __alloc_pages_nodemask 0.01% perf [kernel] [k] find_vma 0.01% perf [kernel] [k] __pollwait 0.01% perf [kernel] [k] sys_poll 0.01% perf [kernel] [k] dbAdjTree 0.01% perf [kernel] [k] spin_unlock 0.01% perf [kernel] [k] txBeginAnon 0.01% perf [kernel] [k] strchr 0.01% perf [kernel] [k] scsi_dispatch_cmd 0.01% perf /home/cloos/bin/perf [.] pid_synthesize_mmap_samples 0.01% dd [kernel] [k] set_normalized_timespec 0.01% dd [kernel] [k] __delayacct_blkio_start 0.01% dd [kernel] [k] bio_alloc 0.01% dd [kernel] [k] elv_set_request 0.01% dd [kernel] [k] blk_unplug 0.01% dd [kernel] [k] generic_unplug_device 0.01% dd [kernel] [k] ata_sff_interrupt 0.01% dd [kernel] [k] _cond_resched 0.01% perf [kernel] [k] add_wait_queue 0.01% perf [kernel] [k] hrtimer_init 0.01% perf [kernel] [k] hrtimer_start_range_ns 0.01% perf [kernel] [k] rcu_process_gp_end 0.01% perf [kernel] [k] zone_watermark_ok 0.01% perf [kernel] [k] __set_page_dirty_nobuffers 0.01% perf [kernel] [k] ____pagevec_lru_add 0.01% perf [kernel] [k] poll_select_set_timeout 0.01% perf [kernel] [k] free_poll_entry 0.01% perf [kernel] [k] __d_path 0.01% perf [kernel] [k] dbSplit 0.01% perf [kernel] [k] txLock 0.01% perf [kernel] [k] scsi_request_fn 0.01% perf [kernel] [k] ata_sff_interrupt 0.01% perf [kernel] [k] down_write 0.01% dd [kernel] [k] __wake_up 0.01% dd [kernel] [k] sync_page_killable 0.01% dd [kernel] [k] lru_cache_add_lru 0.01% dd [kernel] [k] bvec_alloc_bs 0.01% dd [kernel] [k] ext4_get_block 0.01% dd [kernel] [k] blk_update_request 0.01% dd [kernel] [k] blk_end_bidi_request 0.01% dd [kernel] [k] cfq_cic_lookup 0.01% dd [kernel] [k] schedule 0.01% dd /lib/libc-2.11.so [.] _dl_addr 0.01% dd /lib/ld-2.11.so [.] do_lookup_x 0.01% dd /lib/ld-2.11.so [.] _dl_lookup_symbol_x 0.00% perf [kernel] [k] get_gate_vma 0.00% perf [kernel] [k] wake_up_new_task 0.00% perf [kernel] [k] __wake_up_sync_key 0.00% perf [kernel] [k] dup_mm 0.00% perf [kernel] [k] copy_process 0.00% perf [kernel] [k] set_normalized_timespec 0.00% perf [kernel] [k] hrtimer_cancel 0.00% perf [kernel] [k] down_read_trylock 0.00% perf [kernel] [k] spin_unlock_irqrestore 0.00% perf [kernel] [k] __rcu_process_callbacks 0.00% perf [kernel] [k] perf_mmap_fault 0.00% perf [kernel] [k] perf_event_init_task 0.00% perf [kernel] [k] do_read_cache_page 0.00% perf [kernel] [k] read_cache_page_async 0.00% perf [kernel] [k] read_cache_page 0.00% perf [kernel] [k] determine_dirtyable_memory 0.00% perf [kernel] [k] get_dirty_limits 0.00% perf [kernel] [k] lru_cache_add_lru 0.00% perf [kernel] [k] vma_prio_tree_add 0.00% perf [kernel] [k] next_zones_zonelist 0.00% perf [kernel] [k] unmap_vmas 0.00% perf [kernel] [k] __vm_enough_memory 0.00% perf [kernel] [k] unlink_file_vma 0.00% perf [kernel] [k] page_add_file_rmap 0.00% perf [kernel] [k] reuse_swap_page 0.00% perf [kernel] [k] kmem_cache_free 0.00% perf [kernel] [k] kmem_cache_alloc_notrace 0.00% perf [kernel] [k] sys_lseek 0.00% perf [kernel] [k] fput 0.00% perf [kernel] [k] generic_fillattr 0.00% perf [kernel] [k] cp_new_stat64 0.00% perf [kernel] [k] path_get 0.00% perf [kernel] [k] d_alloc 0.00% perf [kernel] [k] __d_instantiate 0.00% perf [kernel] [k] __d_lookup 0.00% perf [kernel] [k] dput 0.00% perf [kernel] [k] expand_files 0.00% perf [kernel] [k] seq_release_private 0.00% perf [kernel] [k] mangle_path 0.00% perf [kernel] [k] seq_path 0.00% perf [kernel] [k] seq_printf 0.00% perf [kernel] [k] writeback_in_progress 0.00% perf [kernel] [k] free_buffer_head 0.00% perf [kernel] [k] alloc_buffer_head 0.00% perf [kernel] [k] alloc_page_buffers 0.00% perf [kernel] [k] dnotify_flush 0.00% perf [kernel] [k] proc_lookup_de 0.00% perf [kernel] [k] proc_pid_status 0.00% perf [kernel] [k] metapage_get_blocks 0.00% perf [kernel] [k] blk_end_bidi_request 0.00% perf [kernel] [k] get_io_context 0.00% perf [kernel] [k] prop_norm_percpu 0.00% perf [kernel] [k] prop_fraction_percpu 0.00% perf [kernel] [k] __rb_rotate_left 0.00% perf [kernel] [k] rb_insert_color 0.00% perf [kernel] [k] put_dec_trunc 0.00% perf [kernel] [k] put_dec 0.00% perf [kernel] [k] csum_partial 0.00% perf [kernel] [k] credit_entropy_bits 0.00% perf [kernel] [k] scsi_decide_disposition 0.00% perf [kernel] [k] scsi_init_cmd_errh 0.00% perf [kernel] [k] e100_intr 0.00% perf [kernel] [k] e100_enable_irq 0.00% perf [kernel] [k] e100_poll 0.00% perf [kernel] [k] irq_handler 0.00% perf [kernel] [k] i8042_interrupt 0.00% perf [kernel] [k] ip_queue_xmit 0.00% perf [kernel] [k] tcp_sync_mss 0.00% perf [kernel] [k] fib6_age 0.00% perf [kernel] [k] io_schedule 0.00% perf [kernel] [k] preempt_schedule_irq 0.00% perf /lib/libc-2.11.so [.] __fopen_internal 0.00% perf /lib/libc-2.11.so [.] _IO_getline_info 0.00% perf /lib/ld-2.11.so [.] do_lookup_x 0.00% perf /lib/ld-2.11.so [.] _dl_fixup 0.00% perf /home/cloos/bin/perf [.] exit@plt 0.00% dd [kernel] [k] sysenter_past_esp 0.00% dd [kernel] [k] do_exit 0.00% dd [kernel] [k] put_cred_rcu 0.00% dd [kernel] [k] prepare_creds 0.00% dd [kernel] [k] current_kernel_time 0.00% dd [kernel] [k] check_for_new_grace_period 0.00% dd [kernel] [k] rcu_sched_qs 0.00% dd [kernel] [k] __rcu_process_callbacks 0.00% dd [kernel] [k] filemap_fault 0.00% dd [kernel] [k] vma_prio_tree_add 0.00% dd [kernel] [k] find_vma 0.00% dd [kernel] [k] unmap_region 0.00% dd [kernel] [k] mmap_region 0.00% dd [kernel] [k] page_remove_rmap 0.00% dd [kernel] [k] page_add_new_anon_rmap 0.00% dd [kernel] [k] anon_vma_prepare 0.00% dd [kernel] [k] sys_write 0.00% dd [kernel] [k] fget_light 0.00% dd [kernel] [k] fget 0.00% dd [kernel] [k] fput 0.00% dd [kernel] [k] copy_strings 0.00% dd [kernel] [k] kernel_read 0.00% dd [kernel] [k] acl_permission_check 0.00% dd [kernel] [k] d_alloc 0.00% dd [kernel] [k] __d_lookup 0.00% dd [kernel] [k] bio_endio 0.00% dd [kernel] [k] ext4_readpages 0.00% dd [kernel] [k] jbd2_journal_stop 0.00% dd [kernel] [k] dtSearch 0.00% dd [kernel] [k] security_inode_permission 0.00% dd [kernel] [k] req_bio_endio 0.00% dd [kernel] [k] cfq_idle_slice_timer 0.00% dd [kernel] [k] __rb_rotate_right 0.00% dd [kernel] [k] sha_transform 0.00% dd [kernel] [k] strnlen_user 0.00% dd [kernel] [k] tty_insert_flip_string 0.00% dd [kernel] [k] scsi_next_command 0.00% dd /lib/libc-2.11.so [.] __GI_bsearch 0.00% dd /lib/libc-2.11.so [.] msort_with_tmp 0.00% dd /lib/libc-2.11.so [.] __GI_getenv 0.00% dd /lib/libc-2.11.so [.] __GI___printf_fp 0.00% dd /lib/libc-2.11.so [.] __libc_open64 0.00% dd /lib/ld-2.11.so [.] _dl_sort_fini 0.00% dd /lib/ld-2.11.so [.] match_symbol 0.00% dd /lib/ld-2.11.so [.] _dl_next_ld_env_entry 0.00% dd /lib/ld-2.11.so [.] strcmp # # (For a higher level overview, try: perf report --sort comm,dso) #