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

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51ec243650361Run #51ec227a9cea0DiffDiff%
Number of Function Calls136 136 0 0.0%
Incl. Wall Time (microsec)18,435 18,383 -52 -0.3%
Incl. Wall Time (microsec) per call 136 135 -0 -0.3%
Excl. Wall Time (microsec)1,634 1,698 64 3.9%
Incl. CPU (microsecs)17,082 17,307 225 1.3%
Incl. CPU (microsecs) per call 126 127 2 1.3%
Excl. CPU (microsec)1,477 1,569 92 6.2%
Incl. MemUse (bytes)2,327,344 2,327,064 -280 -0.0%
Incl. MemUse (bytes) per call 17,113 17,111 -2 -0.0%
Excl. MemUse (bytes)-469,592 -469,472 120 0.0%
Incl. PeakMemUse (bytes)3,053,848 3,054,488 640 0.0%
Incl. PeakMemUse (bytes) per call 22,455 22,459 5 0.0%
Excl. PeakMemUse (bytes)9,224 9,080 -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 Function64 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%