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

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #52e49b394aea8Run #52e49acfb0eb8DiffDiff%
Number of Function Calls70 69 -1 -1.4%
Incl. Wall Time (microsec)8,017 7,995 -22 -0.3%
Incl. Wall Time (microsec) per call 115 116 1 1.2%
Excl. Wall Time (microsec)765 765 0 0.0%
Incl. CPU (microsecs)7,087 7,080 -7 -0.1%
Incl. CPU (microsecs) per call 101 103 1 1.3%
Excl. CPU (microsec)662 692 30 4.5%
Incl. MemUse (bytes)1,389,440 1,388,488 -952 -0.1%
Incl. MemUse (bytes) per call 19,849 20,123 274 1.4%
Excl. MemUse (bytes)-203,440 -202,984 456 0.2%
Incl. PeakMemUse (bytes)1,864,720 1,865,696 976 0.1%
Incl. PeakMemUse (bytes) per call 26,639 27,039 400 1.5%
Excl. PeakMemUse (bytes)7,184 7,312 128 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::prepareItem-1 -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::getMultiple-1 -100.0% -22 -100.0% -7 -100.0% -952 -100.0% 976 100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags-1 -50.0% -14 -63.6% -11 -157.1% -488 -51.3% 104 10.7%
unserialize-1 -50.0% -7 -31.8% -26 -371.4% -904 -95.0% 752 77.0%
explode0 0.0% -1 -4.5% 0 0.0% -16 -1.7% -8 -0.8%