Diff Report
Run #531ee657ba49e: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #531ee5f3237b0: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #531ee657ba49eRun #531ee5f3237b0DiffDiff%
Number of Function Calls83 82 -1 -1.2%
Incl. Wall Time (microsec)11,516 11,706 190 1.6%
Incl. Wall Time (microsec) per call 139 143 4 2.9%
Excl. Wall Time (microsec)842 848 6 0.7%
Incl. CPU (microsecs)10,197 10,378 181 1.8%
Incl. CPU (microsecs) per call 123 127 4 3.0%
Excl. CPU (microsec)755 745 -10 -1.3%
Incl. MemUse (bytes)2,243,584 2,140,432 -103,152 -4.6%
Incl. MemUse (bytes) per call 27,031 26,103 -928 -3.4%
Excl. MemUse (bytes)-286,256 -281,264 4,992 1.7%
Incl. PeakMemUse (bytes)2,672,320 2,600,536 -71,784 -2.7%
Incl. PeakMemUse (bytes) per call 32,197 31,714 -483 -1.5%
Excl. PeakMemUse (bytes)8,328 8,240 -88 -1.1%

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::prepareItem-1 -33.3% 190 7.5% 181 6.0% -103,152 -135.1% -71,784 -91.7%
Exclusive Metrics Diff for Current Function6 3.2% -10 -5.5% 4,992 4.8% -88 -0.1%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple-1 -100.0% 190 100.0% 181 100.0% -103,152 -100.0% -71,784 -100.0%
Child functions
unserialize-1 -50.0% 107 56.3% 106 58.6% -107,616 -104.3% -76,552 -106.6%
Drupal\Core\Cache\DatabaseBackend::checksumTags-1 -50.0% 81 42.6% 82 45.3% -520 -0.5% 4,896 6.8%
Symfony\Component\ClassLoader\ApcClassLoader::loadClass0 0.0% -4 -2.1% -3 -1.7% 0 0.0% -72 -0.1%
explode0 0.0% 0 0.0% 6 3.3% -8 -0.0% 32 0.0%