[root@gr-2 vagrant]# perf report --stdio             
# To display the perf.data header info, please use --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 1K of event 'cpu-clock'
# Event count (approx.): 19222222030
#
# Overhead  Command  Shared Object       Symbol                                                             
# ........  .......  ..................  ...................................................................
#
    84.50%  mysqld   [kernel.kallsyms]   [k] _raw_spin_unlock_irqrestore
     2.94%  mysqld   [kernel.kallsyms]   [k] __do_softirq
     2.21%  mysqld   [kernel.kallsyms]   [k] finish_task_switch
     0.58%  mysqld   mysqld              [.] trx_purge
     0.53%  mysqld   libc-2.17.so        [.] __strrchr_sse42
     0.53%  mysqld   libc-2.17.so        [.] _int_malloc
     0.47%  mysqld   [kernel.kallsyms]   [k] __schedule
     0.26%  mysqld   [kernel.kallsyms]   [k] find_get_pages
     0.26%  mysqld   [kernel.kallsyms]   [k] system_call_after_swapgs
     0.26%  mysqld   libc-2.17.so        [.] malloc
     0.21%  mysqld   [kernel.kallsyms]   [k] e1000_xmit_frame
     0.21%  mysqld   [kernel.kallsyms]   [k] get_futex_key_refs.isra.12
     0.21%  mysqld   libc-2.17.so        [.] __strlen_sse2_pminub
     0.21%  mysqld   libpthread-2.17.so  [.] pthread_self
     0.21%  mysqld   mysqld              [.] que_fork_scheduler_round_robin
     0.21%  mysqld   mysqld              [.] srv_que_task_enqueue_low
     0.16%  mysqld   [kernel.kallsyms]   [k] futex_requeue
     0.16%  mysqld   libc-2.17.so        [.] __memcpy_ssse3_back
     0.16%  mysqld   libc-2.17.so        [.] __sched_yield
     0.16%  mysqld   libpthread-2.17.so  [.] pthread_mutex_lock
     0.16%  mysqld   mysqld              [.] MVCC::clone_oldest_view
     0.16%  mysqld   mysqld              [.] TrxUndoRsegsIterator::set_next
     0.16%  mysqld   mysqld              [.] pfs_start_mutex_wait_v1
     0.16%  mysqld   mysqld              [.] row_purge_step
     0.16%  mysqld   mysqld              [.] std::vector<trx_rseg_t*, ut_allocator<trx_rseg_t*> >::operator=
     0.16%  mysqld   mysqld              [.] ut_new_get_key_by_file
     0.11%  mysqld   [kernel.kallsyms]   [k] __audit_syscall_entry
     0.11%  mysqld   [kernel.kallsyms]   [k] __audit_syscall_exit
     0.11%  mysqld   [kernel.kallsyms]   [k] __radix_tree_lookup
     0.11%  mysqld   [kernel.kallsyms]   [k] _raw_spin_unlock
     0.11%  mysqld   [kernel.kallsyms]   [k] copy_user_generic_string
     0.11%  mysqld   libc-2.17.so        [.] free
     0.11%  mysqld   mysqld              [.] PolicyMutex<TTASEventMutex<GenericPolicy> >::enter
     0.11%  mysqld   mysqld              [.] buf_page_get_gen
     0.11%  mysqld   mysqld              [.] buf_page_make_young_if_needed
     0.11%  mysqld   mysqld              [.] mem_heap_create_block_func
     0.11%  mysqld   mysqld              [.] mlog_open_and_write_index
     0.11%  mysqld   mysqld              [.] mtr_t::Command::release_resources
     0.11%  mysqld   mysqld              [.] mtr_t::Impl::~Impl
     0.11%  mysqld   mysqld              [.] my_timer_cycles
     0.11%  mysqld   mysqld              [.] que_run_threads
     0.11%  mysqld   mysqld              [.] row_search_mvcc
     0.11%  mysqld   mysqld              [.] rw_lock_x_lock_func
...