Diff Report
Run #51972fb0786ef: XHProf Run (Namespace=drupal-perf-steveoliver)
vs.
Run #5197310fa6a63: XHProf Run (Namespace=drupal-perf-steveoliver)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51972fb0786efRun #5197310fa6a63DiffDiff%
Number of Function Calls119 119 0 0.0%
Incl. Wall Time (microsec)630,527 631,934 1,407 0.2%
Incl. Wall Time (microsec) per call 5,299 5,310 12 0.2%
Excl. Wall Time (microsec)31,482 31,550 68 0.2%
Incl. CPU (microsecs)48,004 60,004 12,000 25.0%
Incl. CPU (microsecs) per call 403 504 101 25.0%
Excl. CPU (microsec)0 4,000 4,000 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% 1,407 0.5% 12,000 50.0% -40 -0.0% 216 0.0%
Exclusive Metrics Diff for Current Function68 4.8% 4,000 33.3% 8 20.0% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 1,407 100.0% 12,000 100.0% -40 -100.0% 216 100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 768 54.6% 8,000 66.7% 0 0.0% 0 0.0%
unserialize0 N/A% 575 40.9% 0 0.0% -48 -120.0% 216 100.0%
explode0 N/A% -4 -0.3% 0 0.0% 0 0.0% 0 0.0%