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sj-i/n-body-test-profile-result.md

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Revisions

  1. sj-i revised this gist Aug 13, 2020. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion n-body-test-profile-result.md
    View file
    Original file line number Diff line number Diff line change
    @@ -113,4 +113,4 @@ According to https://github.com/php/php-src/blob/PHP-7.4.8/Zend/zend_vm_opcodes.
    60: ZEND_DO_FCALL
    ```

    ZEND_DO_FCALL is the lie calls NBodySystem::advance, so it can be ignored to see the result.
    ZEND_DO_FCALL is the line calls NBodySystem::advance, so it can be ignored to see the result.
  2. sj-i revised this gist Aug 13, 2020. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion n-body-test-profile-result.md
    View file
    Original file line number Diff line number Diff line change
    @@ -19,7 +19,7 @@ cat result | sort | uniq -c | sort -nr
    The output is formatted like below.

    ```
    [number] [function] [file]([line])<[opcode]>
    [count of appearance in traces] [function] [file]([line])<[opcode]>
    ```

    ```
  3. sj-i revised this gist Aug 13, 2020. 1 changed file with 1 addition and 1 deletion.
    2 changes: 1 addition & 1 deletion n-body-test-profile-result.md
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    Original file line number Diff line number Diff line change
    @@ -1,4 +1,4 @@
    I tested my profiler using https://gist.github.com/Girgias/e21b57cff72b8d05be06883d98552ee6 .
    I tested [my profiler](https://github.com/sj-i/php-profiler) using https://gist.github.com/Girgias/e21b57cff72b8d05be06883d98552ee6 .
    The profiler is slightly modified to get information about which opcode is how much used.
    https://github.com/sj-i/php-profiler/tree/experiment-opcode-tracer

  4. sj-i renamed this gist Aug 13, 2020. 1 changed file with 0 additions and 0 deletions.
    0 n-body-test-profile-result.txt → n-body-test-profile-result.md
    View file
    File renamed without changes.
  5. sj-i created this gist Aug 13, 2020.
    116 changes: 116 additions & 0 deletions n-body-test-profile-result.txt
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,116 @@
    I tested my profiler using https://gist.github.com/Girgias/e21b57cff72b8d05be06883d98552ee6 .
    The profiler is slightly modified to get information about which opcode is how much used.
    https://github.com/sj-i/php-profiler/tree/experiment-opcode-tracer

    ```bash
    php --version
    PHP 7.4.8 (cli) (built: Jul 27 2020 03:41:09) ( ZTS )
    Copyright (c) The PHP Group
    Zend Engine v3.4.0, Copyright (c) Zend Technologies
    with Zend OPcache v7.4.8, Copyright (c), by Zend Technologies
    ```

    ```bash
    time php ./n-body-test.php 50000000
    sudo ./php-profiler inspector:trace -p 250359 >result
    cat result | sort | uniq -c | sort -nr
    ```

    The output is formatted like below.

    ```
    [number] [function] [file]([line])<[opcode]>
    ```

    ```
    85297 <main> /home/sji/work/test/n-body-test.php(188)<60>
    10369 NBodySystem::advance /home/sji/work/test/n-body-test.php(134)<12>
    2918 NBodySystem::advance /home/sji/work/test/n-body-test.php(138)<28>
    2637 NBodySystem::advance /home/sji/work/test/n-body-test.php(142)<28>
    2184 NBodySystem::advance /home/sji/work/test/n-body-test.php(140)<28>
    2158 NBodySystem::advance /home/sji/work/test/n-body-test.php(144)<28>
    2137 NBodySystem::advance /home/sji/work/test/n-body-test.php(139)<28>
    2130 NBodySystem::advance /home/sji/work/test/n-body-test.php(143)<28>
    2038 NBodySystem::advance /home/sji/work/test/n-body-test.php(130)<82>
    2037 NBodySystem::advance /home/sji/work/test/n-body-test.php(131)<82>
    2006 NBodySystem::advance /home/sji/work/test/n-body-test.php(132)<82>
    1804 NBodySystem::advance /home/sji/work/test/n-body-test.php(128)<45>
    1669 NBodySystem::advance /home/sji/work/test/n-body-test.php(136)<4>
    1661 NBodySystem::advance /home/sji/work/test/n-body-test.php(135)<129>
    1644 NBodySystem::advance /home/sji/work/test/n-body-test.php(134)<1>
    1623 NBodySystem::advance /home/sji/work/test/n-body-test.php(138)<82>
    1611 NBodySystem::advance /home/sji/work/test/n-body-test.php(139)<3>
    1543 NBodySystem::advance /home/sji/work/test/n-body-test.php(138)<3>
    1518 NBodySystem::advance /home/sji/work/test/n-body-test.php(142)<3>
    1515 NBodySystem::advance /home/sji/work/test/n-body-test.php(143)<3>
    1513 NBodySystem::advance /home/sji/work/test/n-body-test.php(140)<3>
    1499 NBodySystem::advance /home/sji/work/test/n-body-test.php(135)<61>
    1493 NBodySystem::advance /home/sji/work/test/n-body-test.php(129)<82>
    1493 NBodySystem::advance /home/sji/work/test/n-body-test.php(128)<20>
    1426 NBodySystem::advance /home/sji/work/test/n-body-test.php(144)<3>
    1418 NBodySystem::advance /home/sji/work/test/n-body-test.php(129)<81>
    1351 NBodySystem::advance /home/sji/work/test/n-body-test.php(144)<82>
    1350 NBodySystem::advance /home/sji/work/test/n-body-test.php(143)<82>
    1305 NBodySystem::advance /home/sji/work/test/n-body-test.php(140)<82>
    1236 NBodySystem::advance /home/sji/work/test/n-body-test.php(139)<82>
    1231 NBodySystem::advance /home/sji/work/test/n-body-test.php(142)<82>
    1231 NBodySystem::advance /home/sji/work/test/n-body-test.php(128)<34>
    1220 NBodySystem::advance /home/sji/work/test/n-body-test.php(130)<2>
    1131 NBodySystem::advance /home/sji/work/test/n-body-test.php(135)<117>
    1114 NBodySystem::advance /home/sji/work/test/n-body-test.php(150)<28>
    1076 NBodySystem::advance /home/sji/work/test/n-body-test.php(149)<28>
    1072 NBodySystem::advance /home/sji/work/test/n-body-test.php(151)<28>
    1050 NBodySystem::advance /home/sji/work/test/n-body-test.php(132)<2>
    1020 NBodySystem::advance /home/sji/work/test/n-body-test.php(126)<78>
    1014 NBodySystem::advance /home/sji/work/test/n-body-test.php(131)<2>
    897 NBodySystem::advance /home/sji/work/test/n-body-test.php(148)<78>
    888 NBodySystem::advance /home/sji/work/test/n-body-test.php(127)<190>
    818 NBodySystem::advance /home/sji/work/test/n-body-test.php(129)<22>
    808 NBodySystem::advance /home/sji/work/test/n-body-test.php(136)<3>
    800 NBodySystem::advance /home/sji/work/test/n-body-test.php(132)<22>
    798 NBodySystem::advance /home/sji/work/test/n-body-test.php(131)<22>
    770 NBodySystem::advance /home/sji/work/test/n-body-test.php(130)<22>
    769 NBodySystem::advance /home/sji/work/test/n-body-test.php(134)<22>
    765 NBodySystem::advance /home/sji/work/test/n-body-test.php(151)<82>
    703 NBodySystem::advance /home/sji/work/test/n-body-test.php(148)<42>
    677 NBodySystem::advance /home/sji/work/test/n-body-test.php(128)<42>
    668 NBodySystem::advance /home/sji/work/test/n-body-test.php(128)<1>
    664 NBodySystem::advance /home/sji/work/test/n-body-test.php(127)<82>
    647 NBodySystem::advance /home/sji/work/test/n-body-test.php(150)<82>
    604 NBodySystem::advance /home/sji/work/test/n-body-test.php(136)<22>
    598 <main> /home/sji/work/test/n-body-test.php(187)<20>
    566 NBodySystem::advance /home/sji/work/test/n-body-test.php(149)<82>
    428 sqrt <internal>(-1)<-1>
    386 NBodySystem::advance /home/sji/work/test/n-body-test.php(151)<3>
    383 NBodySystem::advance /home/sji/work/test/n-body-test.php(150)<3>
    367 NBodySystem::advance /home/sji/work/test/n-body-test.php(126)<22>
    358 NBodySystem::advance /home/sji/work/test/n-body-test.php(149)<3>
    252 <main> /home/sji/work/test/n-body-test.php(188)<112>
    179 NBodySystem::advance /home/sji/work/test/n-body-test.php(153)<62>
    164 NBodySystem::advance /home/sji/work/test/n-body-test.php(124)<63>
    155 NBodySystem::advance /home/sji/work/test/n-body-test.php(126)<82>
    127 NBodySystem::advance /home/sji/work/test/n-body-test.php(148)<82>
    127 NBodySystem::advance /home/sji/work/test/n-body-test.php(148)<77>
    125 NBodySystem::advance /home/sji/work/test/n-body-test.php(148)<127>
    123 NBodySystem::advance /home/sji/work/test/n-body-test.php(126)<127>
    101 <main> /home/sji/work/test/n-body-test.php(187)<34>
    98 NBodySystem::advance /home/sji/work/test/n-body-test.php(126)<77>
    92 <main> /home/sji/work/test/n-body-test.php(188)<116>
    1 printf <internal>(-1)<-1>
    1 <main> /home/sji/work/test/n-body-test.php(190)<129>
    1 <main> /home/sji/work/test/n-body-test.php(190)<112>
    ```

    According to https://github.com/php/php-src/blob/PHP-7.4.8/Zend/zend_vm_opcodes.h , frequently appeard opcodes are

    ```
    12: ZEND_POW
    28: ZEND_ASSIGN_OBJ_OP
    82: ZEND_FETCH_OBJ_R
    3: ZEND_MUL
    78: ZEND_FE_FETCH_R
    22: ZEND_ASSIGN
    60: ZEND_DO_FCALL
    ```

    ZEND_DO_FCALL is the lie calls NBodySystem::advance, so it can be ignored to see the result.