Diff Report
Run #556d13edd0b22: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #556d0efcc18be: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #556d13edd0b22Run #556d0efcc18beDiffDiff%
Number of Function Calls178 178 0 0.0%
Incl. Wall Time (microsec)38,393 40,216 1,823 4.7%
Incl. Wall Time (microsec) per call 216 226 10 4.7%
Excl. Wall Time (microsec)2,030 2,167 137 6.7%
Incl. MemUse (bytes)5,151,080 5,151,048 -32 -0.0%
Incl. MemUse (bytes) per call 28,939 28,938 -0 -0.0%
Excl. MemUse (bytes)-992,064 -992,064 0 0.0%
Incl. PeakMemUse (bytes)6,342,144 6,341,704 -440 -0.0%
Incl. PeakMemUse (bytes) per call 35,630 35,628 -2 -0.0%
Excl. PeakMemUse (bytes)1,024 1,024 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.
MemUse
Diff
(bytes)		IMemUse
Diff%		Incl.
PeakMemUse
Diff
(bytes)		IPeakMemUse
Diff%
Current Function
Drupal\Core\Cache\DatabaseBackend::prepareItem0 N/A% 1,823 5.7% -32 -100.0% -440 -107.8%
Exclusive Metrics Diff for Current Function137 7.5% 0 0.0% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 1,823 100.0% -32 -100.0% -440 -100.0%
Child functions
unserialize0 N/A% 1,452 79.6% -32 -100.0% -424 -96.4%
Drupal\Core\Cache\DatabaseCacheTagsChecksum::isValid0 N/A% 216 11.8% 0 0.0% -16 -3.6%
explode0 N/A% 18 1.0% 0 0.0% 0 0.0%