Diff Report
Run #51ec3b81ad265: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec3c5ab9ae4: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51ec3b81ad265Run #51ec3c5ab9ae4DiffDiff%
Number of Function Calls104 104 0 0.0%
Incl. Wall Time (microsec)9,919 10,041 122 1.2%
Incl. Wall Time (microsec) per call 95 97 1 1.2%
Excl. Wall Time (microsec)1,283 1,321 38 3.0%
Incl. CPU (microsecs)9,291 9,437 146 1.6%
Incl. CPU (microsecs) per call 89 91 1 1.6%
Excl. CPU (microsec)1,177 1,217 40 3.4%
Incl. MemUse (bytes)1,742,816 1,743,584 768 0.0%
Incl. MemUse (bytes) per call 16,758 16,765 7 0.0%
Excl. MemUse (bytes)-303,880 -304,048 -168 -0.1%
Incl. PeakMemUse (bytes)2,379,992 2,381,152 1,160 0.0%
Incl. PeakMemUse (bytes) per call 22,885 22,896 11 0.0%
Excl. PeakMemUse (bytes)8,304 8,280 -24 -0.3%

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% 122 32.6% 146 13.8% 768 2.1% 1,160 3.1%
Exclusive Metrics Diff for Current Function38 31.1% 40 27.4% -168 -21.9% -24 -2.1%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 122 100.0% 146 100.0% 768 100.0% 1,160 100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 46 37.7% 70 47.9% 0 0.0% 80 6.9%
unserialize0 N/A% 31 25.4% 32 21.9% 936 121.9% 1,104 95.2%
explode0 N/A% 7 5.7% 4 2.7% 0 0.0% 0 0.0%