Diff Report
Run #519ffa45eeaa4: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519ffa0e6cdec: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519ffa45eeaa4Run #519ffa0e6cdecDiffDiff%
Number of Function Calls66 66 0 0.0%
Incl. Wall Time (microsec)14,697 15,029 332 2.3%
Incl. Wall Time (microsec) per call 223 228 5 2.3%
Excl. Wall Time (microsec)905 835 -70 -7.7%
Incl. CPU (microsecs)16,001 8,000 -8,001 -50.0%
Incl. CPU (microsecs) per call 242 121 -121 -50.0%
Excl. CPU (microsec)0 0 0 N/A%
Incl. MemUse (bytes)1,415,248 1,415,248 0 0.0%
Incl. MemUse (bytes) per call 21,443 21,443 0 0.0%
Excl. MemUse (bytes)-173,288 -173,288 0 0.0%
Incl. PeakMemUse (bytes)1,957,800 1,957,800 0 0.0%
Incl. PeakMemUse (bytes) per call 29,664 29,664 0 0.0%
Excl. PeakMemUse (bytes)8,288 8,288 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. 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% 332 60.3% -8,001 -200.0% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-70 -21.1% 0 0.0% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 332 100.0% -8,001 -100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% 291 87.7% -4,000 -50.0% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 115 34.6% -4,001 -50.0% 0 N/A% 0 N/A%
explode0 N/A% -4 -1.2% 0 0.0% 0 N/A% 0 N/A%