Diff Report
Run #519eb7a1537f7: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519eb880e5974: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519eb7a1537f7Run #519eb880e5974DiffDiff%
Number of Function Calls112 112 0 0.0%
Incl. Wall Time (microsec)38,425 38,286 -139 -0.4%
Incl. Wall Time (microsec) per call 343 342 -1 -0.4%
Excl. Wall Time (microsec)2,479 2,490 11 0.4%
Incl. CPU (microsecs)32,204 32,460 256 0.8%
Incl. CPU (microsecs) per call 288 290 2 0.8%
Excl. CPU (microsec)2,310 2,326 16 0.7%
Incl. MemUse (bytes)1,027,756 1,027,704 -52 -0.0%
Incl. MemUse (bytes) per call 9,176 9,176 -0 -0.0%
Excl. MemUse (bytes)-289,988 -289,980 8 0.0%
Incl. PeakMemUse (bytes)1,469,124 1,488,640 19,516 1.3%
Incl. PeakMemUse (bytes) per call 13,117 13,291 174 1.3%
Excl. PeakMemUse (bytes)5,608 6,080 472 8.4%

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% -139 -3.9% 256 248.5% -52 -0.0% 19,516 12.5%
Exclusive Metrics Diff for Current Function11 7.9% 16 6.2% 8 15.4% 472 2.4%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -139 -100.0% 256 100.0% -52 -100.0% 19,516 100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -214 -154.0% 110 43.0% 0 0.0% 2,384 12.2%
unserialize0 N/A% 62 44.6% 131 51.2% -60 -115.4% 16,660 85.4%
explode0 N/A% 2 1.4% -1 -0.4% 0 0.0% 0 0.0%