Diff Report
Run #517d51ae434de: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #517d52b5a5611: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for drupal_add_http_header

drupal_add_http_headerRun #517d51ae434deRun #517d52b5a5611DiffDiff%
Number of Function Calls3 3 0 0.0%
Incl. Wall Time (microsec)164 191 27 16.5%
Incl. Wall Time (microsec) per call 55 64 9 16.5%
Excl. Wall Time (microsec)49 34 -15 -30.6%
Incl. CPU (microsecs)169 192 23 13.6%
Incl. CPU (microsecs) per call 56 64 8 13.6%
Excl. CPU (microsec)42 23 -19 -45.2%
Incl. MemUse (bytes)14,520 14,520 0 0.0%
Incl. MemUse (bytes) per call 4,840 4,840 0 0.0%
Excl. MemUse (bytes)2,568 2,568 0 0.0%
Incl. PeakMemUse (bytes)8,824 8,880 56 0.6%
Incl. PeakMemUse (bytes) per call 2,941 2,960 19 0.6%
Excl. PeakMemUse (bytes)1,240 1,240 0 0.0%

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% 27 1.1% 23 1.6% 0 0.0% 56 0.5%
Exclusive Metrics Diff for Current Function-15 -55.6% -19 -82.6% 0 N/A% 0 0.0%
Parent function
call_user_func_array0 N/A% 27 100.0% 23 100.0% 0 N/A% 56 100.0%
Child functions
drupal_send_headers0 N/A% 44 163.0% 46 200.0% 0 N/A% 56 100.0%
strtolower0 N/A% -1 -3.7% -2 -8.7% 0 N/A% 0 0.0%
drupal_static0 N/A% -1 -3.7% 0 0.0% 0 N/A% 0 0.0%
_drupal_set_preferred_header_name0 N/A% 0 0.0% -2 -8.7% 0 N/A% 0 0.0%