Diff Report
Run #51904f8640386: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #519050cbdc201: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for drupal_add_http_header

drupal_add_http_headerRun #51904f8640386Run #519050cbdc201DiffDiff%
Number of Function Calls3 3 0 0.0%
Incl. Wall Time (microsec)152 149 -3 -2.0%
Incl. Wall Time (microsec) per call 51 50 -1 -2.0%
Excl. Wall Time (microsec)39 31 -8 -20.5%
Incl. CPU (microsecs)153 153 0 0.0%
Incl. CPU (microsecs) per call 51 51 0 0.0%
Excl. CPU (microsec)23 27 4 17.4%
Incl. MemUse (bytes)14,616 14,616 0 0.0%
Incl. MemUse (bytes) per call 4,872 4,872 0 0.0%
Excl. MemUse (bytes)2,568 2,568 0 0.0%
Incl. PeakMemUse (bytes)8,768 8,256 -512 -5.8%
Incl. PeakMemUse (bytes) per call 2,923 2,752 -171 -5.8%
Excl. PeakMemUse (bytes)1,240 1,048 -192 -15.5%

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% -3 -0.3% 0 0.0% 0 0.0% -512 -0.6%
Exclusive Metrics Diff for Current Function-8 -266.7% 4 N/A% 0 N/A% -192 -37.5%
Parent function
call_user_func_array0 N/A% -3 -100.0% 0 N/A% 0 N/A% -512 -100.0%
Child functions
drupal_send_headers0 N/A% 4 133.3% 3 N/A% 0 N/A% 112 21.9%
strtolower0 N/A% 1 33.3% -1 N/A% 0 N/A% -192 -37.5%
drupal_static0 N/A% 0 0.0% -2 N/A% 0 N/A% -240 -46.9%
_drupal_set_preferred_header_name0 N/A% 0 0.0% -4 N/A% 0 N/A% 0 0.0%