Diff Report
Run #517d51ae434de: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #517d525cbaeb1: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for drupal_add_http_header

drupal_add_http_headerRun #517d51ae434deRun #517d525cbaeb1DiffDiff%
Number of Function Calls3 3 0 0.0%
Incl. Wall Time (microsec)164 159 -5 -3.0%
Incl. Wall Time (microsec) per call 55 53 -2 -3.0%
Excl. Wall Time (microsec)49 47 -2 -4.1%
Incl. CPU (microsecs)169 162 -7 -4.1%
Incl. CPU (microsecs) per call 56 54 -2 -4.1%
Excl. CPU (microsec)42 41 -1 -2.4%
Incl. MemUse (bytes)14,520 14,536 16 0.1%
Incl. MemUse (bytes) per call 4,840 4,845 5 0.1%
Excl. MemUse (bytes)2,568 2,584 16 0.6%
Incl. PeakMemUse (bytes)8,824 8,896 72 0.8%
Incl. PeakMemUse (bytes) per call 2,941 2,965 24 0.8%
Excl. PeakMemUse (bytes)1,240 1,256 16 1.3%

Parent/Child Regression/Improvement report for drupal_add_http_header [View Callgraph Diff]


Function NameCalls DiffCalls
Diff%		Incl. Wall
Diff
(microsec)		IWall
Diff%		Incl. CPU Diff
(microsec)		ICpu
Diff%		Incl.
MemUse
Diff
(bytes)		IMemUse
Diff%		Incl.
PeakMemUse
Diff
(bytes)		IPeakMemUse
Diff%
Current Function
drupal_add_http_header0 N/A% -5 -0.1% -7 -0.1% 16 0.3% 72 1.2%
Exclusive Metrics Diff for Current Function-2 -40.0% -1 -14.3% 16 100.0% 16 22.2%
Parent function
call_user_func_array0 N/A% -5 -100.0% -7 -100.0% 16 100.0% 72 100.0%
Child functions
drupal_send_headers0 N/A% -1 -20.0% 0 0.0% 0 0.0% 56 77.8%
strtolower0 N/A% -1 -20.0% -4 -57.1% 0 0.0% 0 0.0%
drupal_static0 N/A% -1 -20.0% -2 -28.6% 0 0.0% 0 0.0%
_drupal_set_preferred_header_name0 N/A% 0 0.0% 0 0.0% 0 0.0% 0 0.0%