Diff Report
Run #517d7319aefb8: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #517d73f55c548: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #517d7319aefb8Run #517d73f55c548DiffDiff%
Number of Function Calls58 58 0 0.0%
Incl. Wall Time (microsec)22,654 23,163 509 2.2%
Incl. Wall Time (microsec) per call 391 399 9 2.2%
Excl. Wall Time (microsec)876 868 -8 -0.9%
Incl. CPU (microsecs)18,305 18,714 409 2.2%
Incl. CPU (microsecs) per call 316 323 7 2.2%
Excl. CPU (microsec)775 807 32 4.1%
Incl. MemUse (bytes)1,460,248 1,458,856 -1,392 -0.1%
Incl. MemUse (bytes) per call 25,177 25,153 -24 -0.1%
Excl. MemUse (bytes)-163,696 -163,480 216 0.1%
Incl. PeakMemUse (bytes)1,918,952 1,919,632 680 0.0%
Incl. PeakMemUse (bytes) per call 33,085 33,097 12 0.0%
Excl. PeakMemUse (bytes)6,080 6,000 -80 -1.3%

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::prepareItem0 N/A% 509 6.1% 409 4.8% -1,392 -7.4% 680 3.6%
Exclusive Metrics Diff for Current Function-8 -1.6% 32 7.8% 216 15.5% -80 -11.8%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 509 100.0% 409 100.0% -1,392 -100.0% 680 100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% 269 52.8% 62 15.2% -24 -1.7% 232 34.1%
unserialize0 N/A% 253 49.7% 317 77.5% -1,608 -115.5% 528 77.6%
explode0 N/A% -5 -1.0% -2 -0.5% 24 1.7% 0 0.0%