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Diffstat (limited to 'Examples/php_flowinfo_example.txt')
| -rw-r--r-- | Examples/php_flowinfo_example.txt | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/Examples/php_flowinfo_example.txt b/Examples/php_flowinfo_example.txt new file mode 100644 index 0000000..3b2e3c1 --- /dev/null +++ b/Examples/php_flowinfo_example.txt @@ -0,0 +1,40 @@ +The following are examples of php_flowinfo.d. + +This is a simple script to trace the flow of PHP functions. +Here it traces the example program, Code/Php/func_abc.php + +# php_flowinfo.d +C PID/TID DELTA(us) FILE:LINE TYPE -- FUNC +0 18422/1 9 func_abc.php:22 func -> func_a +0 18422/1 35 func_abc.php:18 func -> sleep +0 18422/1 1009146 func_abc.php:18 func <- sleep +0 18422/1 35 func_abc.php:19 func -> func_b +0 18422/1 24 func_abc.php:11 func -> sleep +0 18422/1 1009803 func_abc.php:11 func <- sleep +0 18422/1 34 func_abc.php:12 func -> func_c +0 18422/1 24 func_abc.php:5 func -> sleep +0 18422/1 1009953 func_abc.php:5 func <- sleep +0 18422/1 28 func_abc.php:6 func <- func_c +0 18422/1 11 func_abc.php:13 func <- func_b +0 18422/1 10 func_abc.php:20 func <- func_a +^C + +The third column is indented by 2 spaces to show when a new function begins. +This shows which function is calling which - the output above begins by +showing that func_a() began; slept, and returned from sleep; and then called +func_b(). + +The DELTA(us) column shows time from that line to the previous line, and +so can be a bit tricky to read. For example, the second line of data output +(skipping the header) reads as "the time from func_a() beginning to +calling the sleep function beginning was 35 microseconds". + +The LINE column shows the line in the file what was being executed. Refer +to the source program to see what this line refers to. + +If the output looks shuffled, check the CPU "C" column - if it changes, +then the output is probably shuffled. See Notes/ALLsnoop_notes.txt for +details and suggested workarounds. + +See Notes/ALLflow_notes.txt for important notes about reading flow outputs. + |
