Diff Report
Run #519c04ab45451: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519c03b86b1ec: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519c04ab45451Run #519c03b86b1ecDiffDiff%
Number of Function Calls109 108 -1 -0.9%
Incl. Wall Time (microsec)35,881 35,270 -611 -1.7%
Incl. Wall Time (microsec) per call 329 327 -3 -0.8%
Excl. Wall Time (microsec)2,293 2,247 -46 -2.0%
Incl. CPU (microsecs)30,217 29,494 -723 -2.4%
Incl. CPU (microsecs) per call 277 273 -4 -1.5%
Excl. CPU (microsec)2,131 2,092 -39 -1.8%
Incl. MemUse (bytes)995,888 995,716 -172 -0.0%
Incl. MemUse (bytes) per call 9,137 9,220 83 0.9%
Excl. MemUse (bytes)-311,208 -311,084 124 0.0%
Incl. PeakMemUse (bytes)1,478,432 1,478,480 48 0.0%
Incl. PeakMemUse (bytes) per call 13,564 13,690 126 0.9%
Excl. PeakMemUse (bytes)5,688 5,700 12 0.2%

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% -611 -97.9% -723 -47.3% -172 -1.4% 48 0.3%
Exclusive Metrics Diff for Current Function-46 -7.5% -39 -5.4% 124 72.1% 12 25.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple-1 -100.0% -611 -100.0% -723 -100.0% -172 -100.0% 48 100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags-1 -50.0% -388 -63.5% -32 -4.4% -288 -167.4% 16 33.3%
unserialize-1 -50.0% -172 -28.2% -645 -89.2% -8 -4.7% 20 41.7%
explode0 0.0% -5 -0.8% -7 -1.0% 0 0.0% 0 0.0%