Diff Report
Run #53920bd97d62d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #53920b950c201: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #53920bd97d62dRun #53920b950c201DiffDiff%
Number of Function Calls44 44 0 0.0%
Incl. Wall Time (microsec)22,905 23,079 174 0.8%
Incl. Wall Time (microsec) per call 521 525 4 0.8%
Excl. Wall Time (microsec)894 869 -25 -2.8%
Incl. CPU (microsecs)18,185 18,252 67 0.4%
Incl. CPU (microsecs) per call 413 415 2 0.4%
Excl. CPU (microsec)787 797 10 1.3%
Incl. MemUse (bytes)1,129,536 1,129,536 0 0.0%
Incl. MemUse (bytes) per call 25,671 25,671 0 0.0%
Excl. MemUse (bytes)-292,376 -292,376 0 0.0%
Incl. PeakMemUse (bytes)1,493,456 1,493,456 0 0.0%
Incl. PeakMemUse (bytes) per call 33,942 33,942 0 0.0%
Excl. PeakMemUse (bytes)1,876 1,876 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% 174 38.2% 67 15.3% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function-25 -14.4% 10 14.9% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 174 100.0% 67 100.0% 0 N/A% 0 N/A%
Child functions
unserialize0 N/A% 380 218.4% 197 294.0% 0 N/A% 0 N/A%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -180 -103.4% -139 -207.5% 0 N/A% 0 N/A%
explode0 N/A% -3 -1.7% -4 -6.0% 0 N/A% 0 N/A%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass0 N/A% 2 1.1% 3 4.5% 0 N/A% 0 N/A%