Diff Report
Run #519fe6587b366: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519fe7e2d7c63: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519fe6587b366Run #519fe7e2d7c63DiffDiff%
Number of Function Calls51 51 0 0.0%
Incl. Wall Time (microsec)12,398 12,445 47 0.4%
Incl. Wall Time (microsec) per call 243 244 1 0.4%
Excl. Wall Time (microsec)481 517 36 7.5%
Incl. CPU (microsecs)24,000 12,000 -12,000 -50.0%
Incl. CPU (microsecs) per call 471 235 -235 -50.0%
Excl. CPU (microsec)0 0 0 N/A%
Incl. MemUse (bytes)1,590,744 1,590,744 0 0.0%
Incl. MemUse (bytes) per call 31,191 31,191 0 0.0%
Excl. MemUse (bytes)-140,784 -140,784 0 0.0%
Incl. PeakMemUse (bytes)1,946,120 1,946,120 0 0.0%
Incl. PeakMemUse (bytes) per call 38,159 38,159 0 0.0%
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% 47 1.5% -12,000 -300.0% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function36 76.6% 0 0.0% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 47 100.0% -12,000 -100.0% 0 N/A% 0 N/A%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 211 448.9% -4,000 -33.3% 0 N/A% 0 N/A%
unserialize0 N/A% -182 -387.2% -8,000 -66.7% 0 N/A% 0 N/A%
explode0 N/A% -18 -38.3% 0 0.0% 0 N/A% 0 N/A%