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

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519fbcb7249d1Run #519fbb3f5c2a0DiffDiff%
Number of Function Calls84 84 0 0.0%
Incl. Wall Time (microsec)20,555 21,248 693 3.4%
Incl. Wall Time (microsec) per call 245 253 8 3.4%
Excl. Wall Time (microsec)1,147 1,181 34 3.0%
Incl. CPU (microsecs)18,669 19,240 571 3.1%
Incl. CPU (microsecs) per call 222 229 7 3.1%
Excl. CPU (microsec)1,055 1,081 26 2.5%
Incl. MemUse (bytes)1,719,968 1,718,480 -1,488 -0.1%
Incl. MemUse (bytes) per call 20,476 20,458 -18 -0.1%
Excl. MemUse (bytes)-228,704 -228,344 360 0.2%
Incl. PeakMemUse (bytes)1,799,128 1,797,288 -1,840 -0.1%
Incl. PeakMemUse (bytes) per call 21,418 21,396 -22 -0.1%
Excl. PeakMemUse (bytes)6,160 6,088 -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 Function34 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%