Diff Report
Run #519e636f9416a: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519e62c02d767: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519e636f9416aRun #519e62c02d767DiffDiff%
Number of Function Calls115 115 0 0.0%
Incl. Wall Time (microsec)21,056 21,370 314 1.5%
Incl. Wall Time (microsec) per call 183 186 3 1.5%
Excl. Wall Time (microsec)1,494 1,483 -11 -0.7%
Incl. CPU (microsecs)19,526 19,633 107 0.5%
Incl. CPU (microsecs) per call 170 171 1 0.5%
Excl. CPU (microsec)1,356 1,340 -16 -1.2%
Incl. MemUse (bytes)1,953,752 1,953,712 -40 -0.0%
Incl. MemUse (bytes) per call 16,989 16,989 -0 -0.0%
Excl. MemUse (bytes)-354,624 -354,648 -24 -0.0%
Incl. PeakMemUse (bytes)2,013,496 2,011,488 -2,008 -0.1%
Incl. PeakMemUse (bytes) per call 17,509 17,491 -17 -0.1%
Excl. PeakMemUse (bytes)6,040 6,040 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% 314 1.9% 107 0.7% -40 -0.1% -2,008 -3.5%
Exclusive Metrics Diff for Current Function-11 -3.5% -16 -15.0% -24 -60.0% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 314 100.0% 107 100.0% -40 -100.0% -2,008 -100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 248 79.0% 83 77.6% 0 0.0% -8 -0.4%
unserialize0 N/A% 80 25.5% 38 35.5% -16 -40.0% -2,000 -99.6%
explode0 N/A% -3 -1.0% 2 1.9% 0 0.0% 0 0.0%