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

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #5198f1db1bc51Run #5198f0bb880efDiffDiff%
Number of Function Calls100 99 -1 -1.0%
Incl. Wall Time (microsec)28,169 27,665 -504 -1.8%
Incl. Wall Time (microsec) per call 282 279 -2 -0.8%
Excl. Wall Time (microsec)1,562 1,561 -1 -0.1%
Incl. CPU (microsecs)22,902 22,819 -83 -0.4%
Incl. CPU (microsecs) per call 229 230 1 0.6%
Excl. CPU (microsec)1,424 1,406 -18 -1.3%
Incl. MemUse (bytes)2,135,704 2,135,488 -216 -0.0%
Incl. MemUse (bytes) per call 21,357 21,571 214 1.0%
Excl. MemUse (bytes)-292,376 -292,104 272 0.1%
Incl. PeakMemUse (bytes)2,199,888 2,200,192 304 0.0%
Incl. PeakMemUse (bytes) per call 21,999 22,224 225 1.0%
Excl. PeakMemUse (bytes)4,968 4,984 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::prepareItem-1 -33.3% -504 -31.5% -83 -3.7% -216 -0.8% 304 0.8%
Exclusive Metrics Diff for Current Function-1 -0.2% -18 -21.7% 272 125.9% 16 5.3%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple-1 -100.0% -504 -100.0% -83 -100.0% -216 -100.0% 304 100.0%
Child functions
unserialize-1 -50.0% -323 -64.1% -18 -21.7% 0 0.0% 24 7.9%
Drupal\Core\Cache\DatabaseBackend::checksumTags-1 -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%