Diff Report
Run #51978d4d92dd9: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #51978cc86c728: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #51978d4d92dd9Run #51978cc86c728DiffDiff%
Number of Function Calls86 85 -1 -1.2%
Incl. Wall Time (microsec)28,059 27,849 -210 -0.7%
Incl. Wall Time (microsec) per call 326 328 1 0.4%
Excl. Wall Time (microsec)1,340 1,396 56 4.2%
Incl. CPU (microsecs)23,583 23,638 55 0.2%
Incl. CPU (microsecs) per call 274 278 4 1.4%
Excl. CPU (microsec)1,218 1,243 25 2.1%
Incl. MemUse (bytes)1,934,592 1,934,280 -312 -0.0%
Incl. MemUse (bytes) per call 22,495 22,756 261 1.2%
Excl. MemUse (bytes)-212,288 -212,008 280 0.1%
Incl. PeakMemUse (bytes)2,336,704 2,327,056 -9,648 -0.4%
Incl. PeakMemUse (bytes) per call 27,171 27,377 206 0.8%
Excl. PeakMemUse (bytes)7,096 7,024 -72 -1.0%

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% -210 -84.3% 55 45.5% -312 -1.4% -9,648 -41.3%
Exclusive Metrics Diff for Current Function56 26.7% 25 45.5% 280 89.7% -72 -0.7%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple-1 -100.0% -210 -100.0% 55 100.0% -312 -100.0% -9,648 -100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags-1 -50.0% -137 -65.2% -56 -101.8% -520 -166.7% -1,976 -20.5%
unserialize-1 -50.0% -130 -61.9% 85 154.5% -72 -23.1% -7,600 -78.8%
explode0 0.0% 1 0.5% 1 1.8% 0 0.0% 0 0.0%