Diff Report
Run #539205a48c548: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #539206aca7ae8: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #539205a48c548Run #539206aca7ae8DiffDiff%
Number of Function Calls67 67 0 0.0%
Incl. Wall Time (microsec)33,493 33,286 -207 -0.6%
Incl. Wall Time (microsec) per call 500 497 -3 -0.6%
Excl. Wall Time (microsec)1,344 1,313 -31 -2.3%
Incl. CPU (microsecs)26,642 26,271 -371 -1.4%
Incl. CPU (microsecs) per call 398 392 -6 -1.4%
Excl. CPU (microsec)1,219 1,176 -43 -3.5%
Incl. MemUse (bytes)1,279,376 1,282,884 3,508 0.3%
Incl. MemUse (bytes) per call 19,095 19,148 52 0.3%
Excl. MemUse (bytes)-340,460 -341,716 -1,256 -0.4%
Incl. PeakMemUse (bytes)1,635,268 1,639,408 4,140 0.3%
Incl. PeakMemUse (bytes) per call 24,407 24,469 62 0.3%
Excl. PeakMemUse (bytes)2,236 2,236 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% -207 -4.5% -371 -9.8% 3,508 3.7% 4,140 4.3%
Exclusive Metrics Diff for Current Function-31 -15.0% -43 -11.6% -1,256 -35.8% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -207 -100.0% -371 -100.0% 3,508 100.0% 4,140 100.0%
Child functions
unserialize0 N/A% -334 -161.4% -271 -73.0% 4,760 135.7% 4,312 104.2%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 141 68.1% -76 -20.5% 0 0.0% -176 -4.3%
explode0 N/A% 16 7.7% 18 4.9% 4 0.1% 4 0.1%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass0 N/A% 1 0.5% 1 0.3% 0 0.0% 0 0.0%