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

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #539206aca7ae8Run #539205a48c548DiffDiff%
Number of Function Calls67 67 0 0.0%
Incl. Wall Time (microsec)33,286 33,493 207 0.6%
Incl. Wall Time (microsec) per call 497 500 3 0.6%
Excl. Wall Time (microsec)1,313 1,344 31 2.4%
Incl. CPU (microsecs)26,271 26,642 371 1.4%
Incl. CPU (microsecs) per call 392 398 6 1.4%
Excl. CPU (microsec)1,176 1,219 43 3.7%
Incl. MemUse (bytes)1,282,884 1,279,376 -3,508 -0.3%
Incl. MemUse (bytes) per call 19,148 19,095 -52 -0.3%
Excl. MemUse (bytes)-341,716 -340,460 1,256 0.4%
Incl. PeakMemUse (bytes)1,639,408 1,635,268 -4,140 -0.3%
Incl. PeakMemUse (bytes) per call 24,469 24,407 -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 Function31 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%