Last active
January 7, 2020 16:59
-
-
Save frankmullerl/d9e8379b8250d84c5b170577c2ad3b89 to your computer and use it in GitHub Desktop.
LCNT output continued (macOS): switching from prim_file:sendfile/8 to file:pread + gen_tcp:send/2
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| > erlang:system_info(system_version). | |
| "Erlang/OTP 22 [erts-10.6] [source] [64-bit] [smp:12:12] [ds:12:12:10] [async-threads:144] [hipe] [lock-counting] [dtrace]\n" | |
| > erlang:statistics(reductions). | |
| {165925199,165925199} | |
| > length(erlang:processes()). | |
| 135 | |
| > lcnt:rt_opt({copy_save, true}), | |
| > lcnt:clear(), | |
| > timer:sleep(120000), | |
| > lcnt:collect(), | |
| > lcnt:conflicts(). | |
| lock id #tries #collisions collisions [%] time [us] duration [%] | |
| ----- --- ------- ------------ --------------- ---------- ------------- | |
| run_queue 14 17230386 619118 3.5932 10880271 16.7387 | |
| alcu_allocator 11 3115406 107001 3.4346 1995484 3.0699 | |
| dirty_run_queue_sleep_list 2 1234640 23396 1.8950 243006 0.3739 | |
| drv_ev_state 128 1003858 23473 2.3383 219408 0.3375 | |
| code_server 5 2338520 23114 0.9884 27220 0.0419 | |
| port_sched_lock 203424 2803324 2739 0.0977 7423 0.0114 | |
| <app@127.0.0.1.5715.1> 5 84 4 4.7619 3878 0.0060 | |
| pix_lock 1024 324 1 0.3086 3662 0.0056 | |
| #Port<app@127.0.0.1.10> 1 276834 1100 0.3974 3340 0.0051 | |
| <app@127.0.0.1.5721.1> 5 77 2 2.5974 2432 0.0037 | |
| <app@127.0.0.1.5729.1> 5 77 2 2.5974 2384 0.0037 | |
| <app@127.0.0.1.31417.5> 5 64 4 6.2500 1328 0.0020 | |
| <app@127.0.0.1.30177.5> 5 77 2 2.5974 1107 0.0017 | |
| <app@127.0.0.1.31397.5> 5 93 3 3.2258 1084 0.0017 | |
| <app@127.0.0.1.30005.5> 5 87 3 3.4483 1083 0.0017 | |
| <app@127.0.0.1.31405.5> 5 72 2 2.7778 1004 0.0015 | |
| <app@127.0.0.1.13289.4> 5 64 4 6.2500 960 0.0015 | |
| <app@127.0.0.1.11353.0> 5 72 2 2.7778 924 0.0014 | |
| <app@127.0.0.1.11359.0> 5 72 2 2.7778 920 0.0014 | |
| <app@127.0.0.1.25734.0> 5 95 4 4.2105 796 0.0012 | |
| > lcnt:inspect(run_queue, [{locations, true}, {combine, true}]). | |
| lock: run_queue | |
| id: 14 | |
| type: mutex | |
| location #tries #collisions collisions [%] time [us] duration [%] histogram [log2(us)] | |
| --------- ------- ------------ --------------- ---------- ------------- --------------------- | |
| 'beam/erl_process.h':2500 17230386 619118 3.5932 10880271 16.7387 |X ....xx... | | |
| undefined:0 0 0 0.0000 0 0.0000 | | | |
| ERTS_GLB_INLINE void | |
| erts_runq_lock(ErtsRunQueue *rq) | |
| { | |
| erts_mtx_lock(&rq->mtx); // <<-------------------- points to this lock | |
| } | |
| > lcnt:inspect(alcu_allocator, [{locations, true}, {combine, true}]). | |
| lock: alcu_allocator | |
| id: 11 | |
| type: mutex | |
| location #tries #collisions collisions [%] time [us] duration [%] histogram [log2(us)] | |
| --------- ------- ------------ --------------- ---------- ------------- --------------------- | |
| 'beam/erl_alloc_util.c':5956 401173 39720 9.9010 771189 1.1864 |. ....Xx.... | | |
| 'beam/erl_alloc_util.c':1837 200008 24301 12.1500 478485 0.7361 |. ....Xx... | | |
| 'beam/erl_alloc_util.c':6422 201186 22661 11.2637 438379 0.6744 |. ....XX... | | |
| 'beam/erl_alloc_util.c':2109 2313000 20319 0.8785 307431 0.4730 | | | |
| undefined:0 0 0 0.0000 0 0.0000 | | | |
| 'beam/erl_alloc_util.c':1654 39 0 0.0000 0 0.0000 | | | |
| > lcnt:inspect(dirty_run_queue_sleep_list, [{locations, true}, {combine, true}]). | |
| lock: dirty_run_queue_sleep_list | |
| id: 2 | |
| type: mutex | |
| location #tries #collisions collisions [%] time [us] duration [%] histogram [log2(us)] | |
| --------- ------- ------------ --------------- ---------- ------------- --------------------- | |
| 'beam/erl_process.c':3520 406048 13850 3.4109 148487 0.2284 | | | |
| 'beam/erl_process.c':3635 422544 7214 1.7073 74641 0.1148 | | | |
| 'beam/erl_process.c':3358 406048 2332 0.5743 19878 0.0306 | | | |
| undefined:0 0 0 0.0000 0 0.0000 | | | |
| ok | |
| > lcnt:inspect(drv_ev_state, [{locations, true}, {combine, true}]). | |
| lock: drv_ev_state | |
| id: 128 | |
| type: mutex | |
| location #tries #collisions collisions [%] time [us] duration [%] histogram [log2(us)] | |
| --------- ------- ------------ --------------- ---------- ------------- --------------------- | |
| 'sys/common/erl_check_io.c':1723 317987 13590 4.2738 114092 0.1755 | X | | |
| 'sys/common/erl_check_io.c':825 610600 9883 1.6186 105316 0.1620 | | | |
| undefined:0 0 0 0.0000 0 0.0000 | | | |
| 'sys/common/erl_check_io.c':479 75271 0 0.0000 0 0.0000 | | | |
| > lcnt:inspect(port_sched_lock, [{locations, true}, {combine, true}]). | |
| lock: port_sched_lock | |
| id: 203424 | |
| type: mutex | |
| location #tries #collisions collisions [%] time [us] duration [%] histogram [log2(us)] | |
| --------- ------- ------------ --------------- ---------- ------------- --------------------- | |
| 'beam/erl_port_task.h':190 2803324 2739 0.0977 7423 0.0114 |X ...... | | |
| undefined:0 0 0 0.0000 0 0.0000 | | | |
| ok | |
| ERTS_GLB_INLINE void | |
| erts_port_task_sched_lock(ErtsPortTaskSched *ptsp) | |
| { | |
| erts_mtx_lock(&ptsp->mtx); // <<-------------------- points to this lock | |
| } | |
| > lcnt:inspect(pix_lock, [{locations, true}, {combine, true}]). | |
| lock: pix_lock | |
| id: 1024 | |
| type: mutex | |
| location #tries #collisions collisions [%] time [us] duration [%] histogram [log2(us)] | |
| --------- ------- ------------ --------------- ---------- ------------- --------------------- | |
| 'beam/erl_process_lock.h':561 324 1 0.3086 3662 0.0056 | X | | |
| undefined:0 0 0 0.0000 0 0.0000 | | | |
| ok |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment