Diff Report
Run #5589b6f75b296: XHProf Run (Namespace=drupal-perf-stefanr)
vs.
Run #5589b704ad974: XHProf Run (Namespace=drupal-perf-stefanr)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #5589b6f75b296Run #5589b704ad974DiffDiff%
Number of Function Calls10,900 10,900 0 0.0%
Incl. Wall Time (microsec)3,888,830 3,812,189 -76,641 -2.0%
Incl. Wall Time (microsec) per call 357 350 -7 -2.0%
Excl. Wall Time (microsec)159,781 151,505 -8,276 -5.2%
Incl. MemUse (bytes)404,673,600 405,069,600 396,000 0.1%
Incl. MemUse (bytes) per call 37,126 37,162 36 0.1%
Excl. MemUse (bytes)-44,780,800 -44,815,200 -34,400 -0.1%
Incl. PeakMemUse (bytes)504,844,800 508,612,800 3,768,000 0.7%
Incl. PeakMemUse (bytes) per call 46,316 46,662 346 0.7%
Excl. PeakMemUse (bytes)91,200 91,200 0 0.0%

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.
MemUse
Diff
(bytes)		IMemUse
Diff%		Incl.
PeakMemUse
Diff
(bytes)		IPeakMemUse
Diff%
Current Function
Drupal\Core\Cache\DatabaseBackend::prepareItem0 N/A% -76,641 -3.9% 396,000 6.6% 3,768,000 62.9%
Exclusive Metrics Diff for Current Function-8,276 -10.8% -34,400 -8.7% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -76,641 -100.0% 396,000 100.0% 3,768,000 100.0%
Child functions
unserialize0 N/A% -49,965 -65.2% 428,000 108.1% 3,692,800 98.0%
Drupal\Core\Cache\DatabaseCacheTagsChecksum::isValid0 N/A% -18,102 -23.6% 0 0.0% 70,400 1.9%
explode0 N/A% -298 -0.4% 2,400 0.6% 4,800 0.1%