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

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #517c7dc1dc4c3Run #517c7d73caad2DiffDiff%
Number of Function Calls58 58 0 0.0%
Incl. Wall Time (microsec)24,608 23,294 -1,314 -5.3%
Incl. Wall Time (microsec) per call 424 402 -23 -5.3%
Excl. Wall Time (microsec)949 885 -64 -6.7%
Incl. CPU (microsecs)20,759 18,829 -1,930 -9.3%
Incl. CPU (microsecs) per call 358 325 -33 -9.3%
Excl. CPU (microsec)861 790 -71 -8.2%
Incl. MemUse (bytes)1,458,864 1,458,704 -160 -0.0%
Incl. MemUse (bytes) per call 25,153 25,150 -3 -0.0%
Excl. MemUse (bytes)-163,488 -163,472 16 0.0%
Incl. PeakMemUse (bytes)1,919,672 1,920,096 424 0.0%
Incl. PeakMemUse (bytes) per call 33,098 33,105 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 Function-64 -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%