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

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519e62c02d767Run #519e636f9416aDiffDiff%
Number of Function Calls115 115 0 0.0%
Incl. Wall Time (microsec)21,370 21,056 -314 -1.5%
Incl. Wall Time (microsec) per call 186 183 -3 -1.5%
Excl. Wall Time (microsec)1,483 1,494 11 0.7%
Incl. CPU (microsecs)19,633 19,526 -107 -0.5%
Incl. CPU (microsecs) per call 171 170 -1 -0.5%
Excl. CPU (microsec)1,340 1,356 16 1.2%
Incl. MemUse (bytes)1,953,712 1,953,752 40 0.0%
Incl. MemUse (bytes) per call 16,989 16,989 0 0.0%
Excl. MemUse (bytes)-354,648 -354,624 24 0.0%
Incl. PeakMemUse (bytes)2,011,488 2,013,496 2,008 0.1%
Incl. PeakMemUse (bytes) per call 17,491 17,509 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 Function11 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%