Diff Report
Run #5196ef15c751e: XHProf Run (Namespace=drupal-perf-steveoliver)
vs.
Run #5196f0780fa8c: XHProf Run (Namespace=drupal-perf-steveoliver)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #5196ef15c751eRun #5196f0780fa8cDiffDiff%
Number of Function Calls119 119 0 0.0%
Incl. Wall Time (microsec)212,525 631,164 418,639 197.0%
Incl. Wall Time (microsec) per call 1,786 5,304 3,518 197.0%
Excl. Wall Time (microsec)10,754 31,449 20,695 192.4%
Incl. CPU (microsecs)48,002 44,004 -3,998 -8.3%
Incl. CPU (microsecs) per call 403 370 -34 -8.3%
Excl. CPU (microsec)0 0 0 N/A%
Incl. MemUse (bytes)2,976,720 2,976,680 -40 -0.0%
Incl. MemUse (bytes) per call 25,014 25,014 -0 -0.0%
Excl. MemUse (bytes)-227,592 -227,584 8 0.0%
Incl. PeakMemUse (bytes)3,411,912 3,412,128 216 0.0%
Incl. PeakMemUse (bytes) per call 28,672 28,673 2 0.0%
Excl. PeakMemUse (bytes)10,400 10,400 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% 418,639 6.5% -3,998 -20.0% -40 -0.0% 216 0.0%
Exclusive Metrics Diff for Current Function20,695 4.9% 0 0.0% 8 20.0% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 418,639 100.0% -3,998 -100.0% -40 -100.0% 216 100.0%
Child functions
unserialize0 N/A% 339,995 81.2% -7,998 -200.1% -48 -120.0% 216 100.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 57,215 13.7% 4,000 100.1% 0 0.0% 0 0.0%
explode0 N/A% 734 0.2% 0 0.0% 0 0.0% 0 0.0%