Diff Report
Run #517c1bb406b02: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #517c1c27a12c9: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #517c1bb406b02Run #517c1c27a12c9DiffDiff%
Number of Function Calls59 58 -1 -1.7%
Incl. Wall Time (microsec)23,103 23,038 -65 -0.3%
Incl. Wall Time (microsec) per call 392 397 6 1.4%
Excl. Wall Time (microsec)922 912 -10 -1.1%
Incl. CPU (microsecs)18,663 18,625 -38 -0.2%
Incl. CPU (microsecs) per call 316 321 5 1.5%
Excl. CPU (microsec)835 823 -12 -1.4%
Incl. MemUse (bytes)1,459,080 1,458,160 -920 -0.1%
Incl. MemUse (bytes) per call 24,730 25,141 411 1.7%
Excl. MemUse (bytes)-164,016 -163,704 312 0.2%
Incl. PeakMemUse (bytes)1,915,008 1,915,480 472 0.0%
Incl. PeakMemUse (bytes) per call 32,458 33,026 568 1.7%
Excl. PeakMemUse (bytes)6,064 5,960 -104 -1.7%

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% -65 -0.0% -38 -0.0% -920 -0.2% 472 0.1%
Exclusive Metrics Diff for Current Function-10 -15.4% -12 -31.6% 312 33.9% -104 -22.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple-1 -100.0% -65 -100.0% -38 -100.0% -920 -100.0% 472 100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags-1 -50.0% -300 -461.5% 34 89.5% -488 -53.0% 1,024 216.9%
unserialize-1 -50.0% 244 375.4% -64 -168.4% -768 -83.5% -448 -94.9%
explode0 0.0% 1 1.5% 4 10.5% 24 2.6% 0 0.0%