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

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519c03b86b1ecRun #519c04ab45451DiffDiff%
Number of Function Calls108 109 1 0.9%
Incl. Wall Time (microsec)35,270 35,881 611 1.7%
Incl. Wall Time (microsec) per call 327 329 3 0.8%
Excl. Wall Time (microsec)2,247 2,293 46 2.0%
Incl. CPU (microsecs)29,494 30,217 723 2.5%
Incl. CPU (microsecs) per call 273 277 4 1.5%
Excl. CPU (microsec)2,092 2,131 39 1.9%
Incl. MemUse (bytes)995,716 995,888 172 0.0%
Incl. MemUse (bytes) per call 9,220 9,137 -83 -0.9%
Excl. MemUse (bytes)-311,084 -311,208 -124 -0.0%
Incl. PeakMemUse (bytes)1,478,480 1,478,432 -48 -0.0%
Incl. PeakMemUse (bytes) per call 13,690 13,564 -126 -0.9%
Excl. PeakMemUse (bytes)5,700 5,688 -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::prepareItem1 33.3% 611 97.9% 723 47.3% 172 1.4% -48 -0.3%
Exclusive Metrics Diff for Current Function46 7.5% 39 5.4% -124 -72.1% -12 -25.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple1 100.0% 611 100.0% 723 100.0% 172 100.0% -48 -100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags1 50.0% 388 63.5% 32 4.4% 288 167.4% -16 -33.3%
unserialize1 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%