Diff Report
Run #53920b950c201: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #53920c043e98b: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #53920b950c201Run #53920c043e98bDiffDiff%
Number of Function Calls44 44 0 0.0%
Incl. Wall Time (microsec)23,079 23,446 367 1.6%
Incl. Wall Time (microsec) per call 525 533 8 1.6%
Excl. Wall Time (microsec)869 903 34 3.9%
Incl. CPU (microsecs)18,252 18,472 220 1.2%
Incl. CPU (microsecs) per call 415 420 5 1.2%
Excl. CPU (microsec)797 812 15 1.9%
Incl. MemUse (bytes)1,129,536 1,129,784 248 0.0%
Incl. MemUse (bytes) per call 25,671 25,677 6 0.0%
Excl. MemUse (bytes)-292,376 -292,496 -120 -0.0%
Incl. PeakMemUse (bytes)1,493,456 1,493,840 384 0.0%
Incl. PeakMemUse (bytes) per call 33,942 33,951 9 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% 367 102.5% 220 117.6% 248 2.4% 384 3.7%
Exclusive Metrics Diff for Current Function34 9.3% 15 6.8% -120 -48.4% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 367 100.0% 220 100.0% 248 100.0% 384 100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 345 94.0% 122 55.5% 0 0.0% 116 30.2%
unserialize0 N/A% -7 -1.9% 91 41.4% 368 148.4% 268 69.8%
explode0 N/A% -4 -1.1% -6 -2.7% 0 0.0% 0 0.0%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass0 N/A% -1 -0.3% -2 -0.9% 0 0.0% 0 0.0%