Diff Report
Run #519fc2983e6a9: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519fbf2154a5e: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519fc2983e6a9Run #519fbf2154a5eDiffDiff%
Number of Function Calls19 19 0 0.0%
Incl. Wall Time (microsec)940 958 18 1.9%
Incl. Wall Time (microsec) per call 49 50 1 1.9%
Excl. Wall Time (microsec)212 198 -14 -6.6%
Incl. CPU (microsecs)0 4,001 4,001 N/A%
Incl. CPU (microsecs) per call 0 211 211 N/A%
Excl. CPU (microsec)0 4,001 4,001 N/A%
Incl. MemUse (bytes)70,128 70,224 96 0.1%
Incl. MemUse (bytes) per call 3,691 3,696 5 0.1%
Excl. MemUse (bytes)-19,552 -19,768 -216 -1.1%
Incl. PeakMemUse (bytes)155,212 152,952 -2,260 -1.5%
Incl. PeakMemUse (bytes) per call 8,169 8,050 -119 -1.5%
Excl. PeakMemUse (bytes)1,512 1,468 -44 -2.9%

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% 18 1.8% 4,001 200050.0% 96 0.0% -2,260 -1.0%
Exclusive Metrics Diff for Current Function-14 -77.8% 4,001 100.0% -216 -225.0% -44 -1.9%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 18 100.0% 4,001 100.0% 96 100.0% -2,260 -100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 43 238.9% 0 0.0% 0 0.0% -52 -2.3%
unserialize0 N/A% -11 -61.1% 0 0.0% 312 325.0% -2,164 -95.8%
explode0 N/A% 0 0.0% 0 0.0% 0 0.0% 0 0.0%