Diff Report
Run #52e49acfb0eb8: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #52e49b394aea8: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #52e49acfb0eb8Run #52e49b394aea8DiffDiff%
Number of Function Calls69 70 1 1.4%
Incl. Wall Time (microsec)7,995 8,017 22 0.3%
Incl. Wall Time (microsec) per call 116 115 -1 -1.2%
Excl. Wall Time (microsec)765 765 0 0.0%
Incl. CPU (microsecs)7,080 7,087 7 0.1%
Incl. CPU (microsecs) per call 103 101 -1 -1.3%
Excl. CPU (microsec)692 662 -30 -4.3%
Incl. MemUse (bytes)1,388,488 1,389,440 952 0.1%
Incl. MemUse (bytes) per call 20,123 19,849 -274 -1.4%
Excl. MemUse (bytes)-202,984 -203,440 -456 -0.2%
Incl. PeakMemUse (bytes)1,865,696 1,864,720 -976 -0.1%
Incl. PeakMemUse (bytes) per call 27,039 26,639 -400 -1.5%
Excl. PeakMemUse (bytes)7,312 7,184 -128 -1.8%

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% 22 2.0% 7 0.9% 952 3.7% -976 -3.7%
Exclusive Metrics Diff for Current Function0 0.0% -30 -428.6% -456 -47.9% -128 -13.1%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple1 100.0% 22 100.0% 7 100.0% 952 100.0% -976 -100.0%
Child functions
unserialize1 50.0% 7 31.8% 26 371.4% 904 95.0% -752 -77.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags1 50.0% 14 63.6% 11 157.1% 488 51.3% -104 -10.7%
explode0 0.0% 1 4.5% 0 0.0% 16 1.7% 8 0.8%