Diff Report
Run #519bea9000214: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519be9a13e594: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519bea9000214Run #519be9a13e594DiffDiff%
Number of Function Calls97 96 -1 -1.0%
Incl. Wall Time (microsec)34,612 33,853 -759 -2.2%
Incl. Wall Time (microsec) per call 357 353 -4 -1.2%
Excl. Wall Time (microsec)2,079 2,013 -66 -3.2%
Incl. CPU (microsecs)28,577 28,432 -145 -0.5%
Incl. CPU (microsecs) per call 295 296 2 0.5%
Excl. CPU (microsec)1,930 1,897 -33 -1.7%
Incl. MemUse (bytes)934,464 934,320 -144 -0.0%
Incl. MemUse (bytes) per call 9,634 9,733 99 1.0%
Excl. MemUse (bytes)-253,596 -253,472 124 0.0%
Incl. PeakMemUse (bytes)1,364,460 1,359,832 -4,628 -0.3%
Incl. PeakMemUse (bytes) per call 14,067 14,165 98 0.7%
Excl. PeakMemUse (bytes)5,848 5,804 -44 -0.8%

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% -759 -20.1% -145 -6.2% -144 -0.6% -4,628 -18.0%
Exclusive Metrics Diff for Current Function-66 -8.7% -33 -22.8% 124 86.1% -44 -1.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple-1 -100.0% -759 -100.0% -145 -100.0% -144 -100.0% -4,628 -100.0%
Child functions
unserialize-1 -50.0% -495 -65.2% -98 -67.6% 20 13.9% -4,028 -87.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags-1 -50.0% -211 -27.8% -25 -17.2% -288 -200.0% -556 -12.0%
explode0 0.0% 13 1.7% 11 7.6% 0 0.0% 0 0.0%