Diff Report
Run #519c60f26cf68: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519c6200dd578: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519c60f26cf68Run #519c6200dd578DiffDiff%
Number of Function Calls113 113 0 0.0%
Incl. Wall Time (microsec)20,822 20,830 8 0.0%
Incl. Wall Time (microsec) per call 184 184 0 0.0%
Excl. Wall Time (microsec)2,316 2,380 64 2.8%
Incl. CPU (microsecs)18,326 18,247 -79 -0.4%
Incl. CPU (microsecs) per call 162 161 -1 -0.4%
Excl. CPU (microsec)2,151 2,224 73 3.4%
Incl. MemUse (bytes)1,012,664 1,012,668 4 0.0%
Incl. MemUse (bytes) per call 8,962 8,962 0 0.0%
Excl. MemUse (bytes)-344,668 -344,668 0 0.0%
Incl. PeakMemUse (bytes)1,456,020 1,455,976 -44 -0.0%
Incl. PeakMemUse (bytes) per call 12,885 12,885 -0 -0.0%
Excl. PeakMemUse (bytes)5,944 5,928 -16 -0.3%

Parent/Child Regression/Improvement report for Drupal\Core\Cache\DatabaseBackend::prepareItem [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\Core\Cache\DatabaseBackend::prepareItem0 N/A% 8 0.1% -79 -1.1% 4 0.0% -44 -0.0%
Exclusive Metrics Diff for Current Function64 800.0% 73 92.4% 0 0.0% -16 -36.4%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 8 100.0% -79 -100.0% 4 100.0% -44 -100.0%
Child functions
unserialize0 N/A% -32 -400.0% -33 -41.8% 4 100.0% 40 90.9%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -23 -287.5% -121 -153.2% 0 0.0% -68 -154.5%
explode0 N/A% -1 -12.5% 2 2.5% 0 0.0% 0 0.0%