Diff Report
Run #519fbb3f5c2a0: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519fbcb7249d1: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519fbb3f5c2a0Run #519fbcb7249d1DiffDiff%
Number of Function Calls84 84 0 0.0%
Incl. Wall Time (microsec)21,248 20,555 -693 -3.3%
Incl. Wall Time (microsec) per call 253 245 -8 -3.3%
Excl. Wall Time (microsec)1,181 1,147 -34 -2.9%
Incl. CPU (microsecs)19,240 18,669 -571 -3.0%
Incl. CPU (microsecs) per call 229 222 -7 -3.0%
Excl. CPU (microsec)1,081 1,055 -26 -2.4%
Incl. MemUse (bytes)1,718,480 1,719,968 1,488 0.1%
Incl. MemUse (bytes) per call 20,458 20,476 18 0.1%
Excl. MemUse (bytes)-228,344 -228,704 -360 -0.2%
Incl. PeakMemUse (bytes)1,797,288 1,799,128 1,840 0.1%
Incl. PeakMemUse (bytes) per call 21,396 21,418 22 0.1%
Excl. PeakMemUse (bytes)6,088 6,160 72 1.2%

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::prepareItem0 N/A% -693 -181.9% -571 -178.4% 1,488 3.4% 1,840 4.2%
Exclusive Metrics Diff for Current Function-34 -4.9% -26 -4.6% -360 -24.2% 72 3.9%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -693 -100.0% -571 -100.0% 1,488 100.0% 1,840 100.0%
Child functions
unserialize0 N/A% -906 -130.7% -676 -118.4% 1,848 124.2% 1,776 96.5%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 247 35.6% 135 23.6% 0 0.0% -8 -0.4%
explode0 N/A% 0 0.0% -4 -0.7% 0 0.0% 0 0.0%