Diff Report
Run #51ec485525502: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec491641923: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51ec485525502Run #51ec491641923DiffDiff%
Number of Function Calls136 136 0 0.0%
Incl. Wall Time (microsec)19,054 19,651 597 3.1%
Incl. Wall Time (microsec) per call 140 144 4 3.1%
Excl. Wall Time (microsec)1,680 1,664 -16 -1.0%
Incl. CPU (microsecs)17,773 18,219 446 2.5%
Incl. CPU (microsecs) per call 131 134 3 2.5%
Excl. CPU (microsec)1,535 1,521 -14 -0.9%
Incl. MemUse (bytes)2,506,816 2,507,664 848 0.0%
Incl. MemUse (bytes) per call 18,432 18,439 6 0.0%
Excl. MemUse (bytes)-421,464 -421,752 -288 -0.1%
Incl. PeakMemUse (bytes)3,206,456 3,205,496 -960 -0.0%
Incl. PeakMemUse (bytes) per call 23,577 23,570 -7 -0.0%
Excl. PeakMemUse (bytes)8,728 8,376 -352 -4.0%

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% 597 38.5% 446 25.5% 848 0.6% -960 -0.7%
Exclusive Metrics Diff for Current Function-16 -2.7% -14 -3.1% -288 -34.0% -352 -36.7%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 597 100.0% 446 100.0% 848 100.0% -960 -100.0%
Child functions
unserialize0 N/A% 547 91.6% 430 96.4% 1,184 139.6% -1,064 -110.8%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 58 9.7% 21 4.7% -32 -3.8% 472 49.2%
explode0 N/A% 8 1.3% 9 2.0% -16 -1.9% -16 -1.7%