Diff Report
Run #51fdbca2b5409: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #51fdbdbb58abc: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51fdbca2b5409Run #51fdbdbb58abcDiffDiff%
Number of Function Calls123 123 0 0.0%
Incl. Wall Time (microsec)23,107 23,557 450 1.9%
Incl. Wall Time (microsec) per call 188 192 4 1.9%
Excl. Wall Time (microsec)1,495 1,565 70 4.7%
Incl. CPU (microsecs)19,352 19,618 266 1.4%
Incl. CPU (microsecs) per call 157 159 2 1.4%
Excl. CPU (microsec)1,353 1,419 66 4.9%
Incl. MemUse (bytes)2,207,808 2,208,584 776 0.0%
Incl. MemUse (bytes) per call 17,950 17,956 6 0.0%
Excl. MemUse (bytes)-259,320 -259,448 -128 -0.0%
Incl. PeakMemUse (bytes)2,882,312 2,883,768 1,456 0.1%
Incl. PeakMemUse (bytes) per call 23,433 23,445 12 0.1%
Excl. PeakMemUse (bytes)6,888 6,904 16 0.2%

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% 450 47.5% 266 369.4% 776 2.6% 1,456 4.7%
Exclusive Metrics Diff for Current Function70 15.6% 66 24.8% -128 -16.5% 16 1.1%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 450 100.0% 266 100.0% 776 100.0% 1,456 100.0%
Child functions
unserialize0 N/A% 410 91.1% 138 51.9% 904 116.5% 1,304 89.6%
explode0 N/A% -25 -5.6% -24 -9.0% 0 0.0% 0 0.0%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -5 -1.1% 86 32.3% 0 0.0% 136 9.3%