Diff Report
Run #519c03b86b1ec: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519c045f200ea: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519c03b86b1ecRun #519c045f200eaDiffDiff%
Number of Function Calls108 108 0 0.0%
Incl. Wall Time (microsec)35,270 36,111 841 2.4%
Incl. Wall Time (microsec) per call 327 334 8 2.4%
Excl. Wall Time (microsec)2,247 2,251 4 0.2%
Incl. CPU (microsecs)29,494 30,157 663 2.2%
Incl. CPU (microsecs) per call 273 279 6 2.2%
Excl. CPU (microsec)2,092 2,089 -3 -0.1%
Incl. MemUse (bytes)995,716 995,716 0 0.0%
Incl. MemUse (bytes) per call 9,220 9,220 0 0.0%
Excl. MemUse (bytes)-311,084 -311,084 0 0.0%
Incl. PeakMemUse (bytes)1,478,480 1,478,480 0 0.0%
Incl. PeakMemUse (bytes) per call 13,690 13,690 0 0.0%
Excl. PeakMemUse (bytes)5,700 5,700 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% 841 35.5% 663 61.7% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function4 0.5% -3 -0.5% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 841 100.0% 663 100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% 597 71.0% 590 89.0% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 222 26.4% 63 9.5% 0 N/A% 0 N/A%
explode0 N/A% 18 2.1% 13 2.0% 0 N/A% 0 N/A%