Diff Report
Run #517c7d73caad2: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #517c7dc1dc4c3: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #517c7d73caad2Run #517c7dc1dc4c3DiffDiff%
Number of Function Calls58 58 0 0.0%
Incl. Wall Time (microsec)23,294 24,608 1,314 5.6%
Incl. Wall Time (microsec) per call 402 424 23 5.6%
Excl. Wall Time (microsec)885 949 64 7.2%
Incl. CPU (microsecs)18,829 20,759 1,930 10.3%
Incl. CPU (microsecs) per call 325 358 33 10.3%
Excl. CPU (microsec)790 861 71 9.0%
Incl. MemUse (bytes)1,458,704 1,458,864 160 0.0%
Incl. MemUse (bytes) per call 25,150 25,153 3 0.0%
Excl. MemUse (bytes)-163,472 -163,488 -16 -0.0%
Incl. PeakMemUse (bytes)1,920,096 1,919,672 -424 -0.0%
Incl. PeakMemUse (bytes) per call 33,105 33,098 -7 -0.0%
Excl. PeakMemUse (bytes)6,000 6,000 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% 1,314 372.2% 1,930 206.2% 160 6.5% -424 -17.3%
Exclusive Metrics Diff for Current Function64 4.9% 71 3.7% -16 -10.0% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 1,314 100.0% 1,930 100.0% 160 100.0% -424 -100.0%
Child functions
unserialize0 N/A% 1,357 103.3% 1,884 97.6% 176 110.0% 40 9.4%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -110 -8.4% -29 -1.5% 0 0.0% -464 -109.4%
explode0 N/A% 3 0.2% 4 0.2% 0 0.0% 0 0.0%