Diff Report
Run #519fe82fef731: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519fe6587b366: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519fe82fef731Run #519fe6587b366DiffDiff%
Number of Function Calls51 51 0 0.0%
Incl. Wall Time (microsec)11,528 12,398 870 7.5%
Incl. Wall Time (microsec) per call 226 243 17 7.5%
Excl. Wall Time (microsec)512 481 -31 -6.1%
Incl. CPU (microsecs)12,000 24,000 12,000 100.0%
Incl. CPU (microsecs) per call 235 471 235 100.0%
Excl. CPU (microsec)0 0 0 N/A%
Incl. MemUse (bytes)1,592,200 1,590,744 -1,456 -0.1%
Incl. MemUse (bytes) per call 31,220 31,191 -29 -0.1%
Excl. MemUse (bytes)-141,120 -140,784 336 0.2%
Incl. PeakMemUse (bytes)1,947,992 1,946,120 -1,872 -0.1%
Incl. PeakMemUse (bytes) per call 38,196 38,159 -37 -0.1%
Excl. PeakMemUse (bytes)4,376 4,376 0 0.0%

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% 870 20.7% 12,000 300.0% -1,456 -2.3% -1,872 -3.0%
Exclusive Metrics Diff for Current Function-31 -3.6% 0 0.0% 336 23.1% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 870 100.0% 12,000 100.0% -1,456 -100.0% -1,872 -100.0%
Child functions
unserialize0 N/A% 822 94.5% 4,000 33.3% -1,792 -123.1% -1,880 -100.4%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 56 6.4% 8,000 66.7% 0 0.0% 8 0.4%
explode0 N/A% 23 2.6% 0 0.0% 0 0.0% 0 0.0%