Diff Report
Run #53923d861ff11: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #53923e49d2b58: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #53923d861ff11Run #53923e49d2b58DiffDiff%
Number of Function Calls87 87 0 0.0%
Incl. Wall Time (microsec)35,820 36,568 748 2.1%
Incl. Wall Time (microsec) per call 412 420 9 2.1%
Excl. Wall Time (microsec)1,664 1,696 32 1.9%
Incl. CPU (microsecs)29,231 29,766 535 1.8%
Incl. CPU (microsecs) per call 336 342 6 1.8%
Excl. CPU (microsec)1,534 1,523 -11 -0.7%
Incl. MemUse (bytes)1,612,836 1,612,852 16 0.0%
Incl. MemUse (bytes) per call 18,538 18,539 0 0.0%
Excl. MemUse (bytes)-451,168 -451,168 0 0.0%
Incl. PeakMemUse (bytes)2,070,840 2,061,048 -9,792 -0.5%
Incl. PeakMemUse (bytes) per call 23,803 23,690 -113 -0.5%
Excl. PeakMemUse (bytes)3,736 11,564 7,828 209.5%

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% 748 47.8% 535 49.0% 16 1.8% -9,792 -1406.9%
Exclusive Metrics Diff for Current Function32 4.3% -11 -2.1% 0 0.0% 7,828 79.9%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 748 100.0% 535 100.0% 16 100.0% -9,792 -100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 563 75.3% 392 73.3% 8 50.0% -10,456 -106.8%
unserialize0 N/A% 151 20.2% 140 26.2% 20 125.0% -7,180 -73.3%
explode0 N/A% 1 0.1% 14 2.6% -12 -75.0% 16 0.2%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass0 N/A% 1 0.1% 0 0.0% 0 0.0% 0 0.0%