Diff Report
Run #5391fc871e91d: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #5391fd5a43e70: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #5391fc871e91dRun #5391fd5a43e70DiffDiff%
Number of Function Calls65 65 0 0.0%
Incl. Wall Time (microsec)28,382 27,333 -1,049 -3.7%
Incl. Wall Time (microsec) per call 437 421 -16 -3.7%
Excl. Wall Time (microsec)1,286 1,255 -31 -2.4%
Incl. CPU (microsecs)22,079 21,687 -392 -1.8%
Incl. CPU (microsecs) per call 340 334 -6 -1.8%
Excl. CPU (microsec)1,159 1,132 -27 -2.3%
Incl. MemUse (bytes)1,224,800 1,225,956 1,156 0.1%
Incl. MemUse (bytes) per call 18,843 18,861 18 0.1%
Excl. MemUse (bytes)-327,964 -328,444 -480 -0.1%
Incl. PeakMemUse (bytes)1,588,944 1,588,828 -116 -0.0%
Incl. PeakMemUse (bytes) per call 24,445 24,444 -2 -0.0%
Excl. PeakMemUse (bytes)2,224 2,224 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% -1,049 -62.9% -392 -98.0% 1,156 4.6% -116 -0.5%
Exclusive Metrics Diff for Current Function-31 -3.0% -27 -6.9% -480 -41.5% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -1,049 -100.0% -392 -100.0% 1,156 100.0% -116 -100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -1,004 -95.7% -363 -92.6% 0 0.0% -1,024 -882.8%
explode0 N/A% -19 -1.8% -15 -3.8% 0 0.0% 0 0.0%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass0 N/A% 3 0.3% 3 0.8% 0 0.0% 0 0.0%
unserialize0 N/A% 2 0.2% 10 2.6% 1,636 141.5% 908 782.8%