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41 lines
1.9 KiB
Plaintext
41 lines
1.9 KiB
Plaintext
The following are examples of php_flowinfo.d.
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This is a simple script to trace the flow of PHP functions.
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Here it traces the example program, Code/Php/func_abc.php
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# php_flowinfo.d
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C PID/TID DELTA(us) FILE:LINE TYPE -- FUNC
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0 18422/1 9 func_abc.php:22 func -> func_a
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0 18422/1 35 func_abc.php:18 func -> sleep
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0 18422/1 1009146 func_abc.php:18 func <- sleep
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0 18422/1 35 func_abc.php:19 func -> func_b
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0 18422/1 24 func_abc.php:11 func -> sleep
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0 18422/1 1009803 func_abc.php:11 func <- sleep
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0 18422/1 34 func_abc.php:12 func -> func_c
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0 18422/1 24 func_abc.php:5 func -> sleep
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0 18422/1 1009953 func_abc.php:5 func <- sleep
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0 18422/1 28 func_abc.php:6 func <- func_c
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0 18422/1 11 func_abc.php:13 func <- func_b
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0 18422/1 10 func_abc.php:20 func <- func_a
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^C
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The third column is indented by 2 spaces to show when a new function begins.
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This shows which function is calling which - the output above begins by
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showing that func_a() began; slept, and returned from sleep; and then called
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func_b().
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The DELTA(us) column shows time from that line to the previous line, and
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so can be a bit tricky to read. For example, the second line of data output
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(skipping the header) reads as "the time from func_a() beginning to
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calling the sleep function beginning was 35 microseconds".
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The LINE column shows the line in the file what was being executed. Refer
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to the source program to see what this line refers to.
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If the output looks shuffled, check the CPU "C" column - if it changes,
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then the output is probably shuffled. See Notes/ALLsnoop_notes.txt for
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details and suggested workarounds.
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See Notes/ALLflow_notes.txt for important notes about reading flow outputs.
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