Diff Report
Run #51ec227a9cea0: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec243650361: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51ec227a9cea0Run #51ec243650361DiffDiff%
Number of Function Calls136 136 0 0.0%
Incl. Wall Time (microsec)18,383 18,435 52 0.3%
Incl. Wall Time (microsec) per call 135 136 0 0.3%
Excl. Wall Time (microsec)1,698 1,634 -64 -3.8%
Incl. CPU (microsecs)17,307 17,082 -225 -1.3%
Incl. CPU (microsecs) per call 127 126 -2 -1.3%
Excl. CPU (microsec)1,569 1,477 -92 -5.9%
Incl. MemUse (bytes)2,327,064 2,327,344 280 0.0%
Incl. MemUse (bytes) per call 17,111 17,113 2 0.0%
Excl. MemUse (bytes)-469,472 -469,592 -120 -0.0%
Incl. PeakMemUse (bytes)3,054,488 3,053,848 -640 -0.0%
Incl. PeakMemUse (bytes) per call 22,459 22,455 -5 -0.0%
Excl. PeakMemUse (bytes)9,080 9,224 144 1.6%

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% 52 0.6% -225 -3.4% 280 0.9% -640 -2.0%
Exclusive Metrics Diff for Current Function-64 -123.1% -92 -40.9% -120 -42.9% 144 22.5%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 52 100.0% -225 -100.0% 280 100.0% -640 -100.0%
Child functions
unserialize0 N/A% 83 159.6% -73 -32.4% 392 140.0% -320 -50.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 33 63.5% -59 -26.2% 8 2.9% -464 -72.5%
explode0 N/A% 0 0.0% -1 -0.4% 0 0.0% 0 0.0%