Diff Report
Run #52d3e85377bba: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #52d3e812c7cf2: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #52d3e85377bbaRun #52d3e812c7cf2DiffDiff%
Number of Function Calls75 77 2 2.7%
Incl. Wall Time (microsec)7,830 7,854 24 0.3%
Incl. Wall Time (microsec) per call 104 102 -2 -2.3%
Excl. Wall Time (microsec)733 760 27 3.7%
Incl. CPU (microsecs)7,080 7,122 42 0.6%
Incl. CPU (microsecs) per call 94 92 -2 -2.0%
Excl. CPU (microsec)660 677 17 2.6%
Incl. MemUse (bytes)1,453,144 1,459,728 6,584 0.5%
Incl. MemUse (bytes) per call 19,375 18,958 -418 -2.2%
Excl. MemUse (bytes)-212,232 -213,696 -1,464 -0.7%
Incl. PeakMemUse (bytes)1,964,944 1,985,232 20,288 1.0%
Incl. PeakMemUse (bytes) per call 26,199 25,782 -417 -1.6%
Excl. PeakMemUse (bytes)7,368 7,536 168 2.3%

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::prepareItem2 33.3% 24 1.4% 42 2.6% 6,584 5.5% 20,288 17.0%
Exclusive Metrics Diff for Current Function27 112.5% 17 40.5% -1,464 -22.2% 168 0.8%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple2 100.0% 24 100.0% 42 100.0% 6,584 100.0% 20,288 100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags2 50.0% 40 166.7% 61 145.2% 968 14.7% 328 1.6%
unserialize2 50.0% -40 -166.7% -37 -88.1% 7,072 107.4% 19,792 97.6%
explode0 0.0% -3 -12.5% 1 2.4% 8 0.1% 0 0.0%