Diff Report
Run #5198f0bb880ef: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #5198f1db1bc51: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #5198f0bb880efRun #5198f1db1bc51DiffDiff%
Number of Function Calls99 100 1 1.0%
Incl. Wall Time (microsec)27,665 28,169 504 1.8%
Incl. Wall Time (microsec) per call 279 282 2 0.8%
Excl. Wall Time (microsec)1,561 1,562 1 0.1%
Incl. CPU (microsecs)22,819 22,902 83 0.4%
Incl. CPU (microsecs) per call 230 229 -1 -0.6%
Excl. CPU (microsec)1,406 1,424 18 1.3%
Incl. MemUse (bytes)2,135,488 2,135,704 216 0.0%
Incl. MemUse (bytes) per call 21,571 21,357 -214 -1.0%
Excl. MemUse (bytes)-292,104 -292,376 -272 -0.1%
Incl. PeakMemUse (bytes)2,200,192 2,199,888 -304 -0.0%
Incl. PeakMemUse (bytes) per call 22,224 21,999 -225 -1.0%
Excl. PeakMemUse (bytes)4,984 4,968 -16 -0.3%

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::prepareItem1 33.3% 504 31.5% 83 3.7% 216 0.8% -304 -0.8%
Exclusive Metrics Diff for Current Function1 0.2% 18 21.7% -272 -125.9% -16 -5.3%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple1 100.0% 504 100.0% 83 100.0% 216 100.0% -304 -100.0%
Child functions
unserialize1 50.0% 323 64.1% 18 21.7% 0 0.0% -24 -7.9%
Drupal\Core\Cache\DatabaseBackend::checksumTags1 50.0% 181 35.9% 62 74.7% 488 225.9% -264 -86.8%
explode0 0.0% -1 -0.2% -15 -18.1% 0 0.0% 0 0.0%