Diff Report
Run #519d44ffb3845: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519d45fd795a4: XHProf Run (Namespace=drupal-perf-drupalcon)
Tip
Click a function name below to drill down.

Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519d44ffb3845Run #519d45fd795a4DiffDiff%
Number of Function Calls107 107 0 0.0%
Incl. Wall Time (microsec)37,827 38,219 392 1.0%
Incl. Wall Time (microsec) per call 354 357 4 1.0%
Excl. Wall Time (microsec)2,372 2,292 -80 -3.4%
Incl. CPU (microsecs)31,867 32,428 561 1.8%
Incl. CPU (microsecs) per call 298 303 5 1.8%
Excl. CPU (microsec)2,219 2,110 -109 -4.9%
Incl. MemUse (bytes)1,134,260 1,134,280 20 0.0%
Incl. MemUse (bytes) per call 10,601 10,601 0 0.0%
Excl. MemUse (bytes)-320,832 -320,820 12 0.0%
Incl. PeakMemUse (bytes)1,514,968 1,514,980 12 0.0%
Incl. PeakMemUse (bytes) per call 14,159 14,159 0 0.0%
Excl. PeakMemUse (bytes)5,852 5,804 -48 -0.8%

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::prepareItem0 N/A% 392 0.7% 561 1.0% 20 0.0% 12 0.0%
Exclusive Metrics Diff for Current Function-80 -20.4% -109 -19.4% 12 60.0% -48 -400.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% 392 100.0% 561 100.0% 20 100.0% 12 100.0%
Child functions
unserialize0 N/A% 602 153.6% 682 121.6% 8 40.0% 88 733.3%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -128 -32.7% -18 -3.2% 0 0.0% -28 -233.3%
explode0 N/A% -2 -0.5% 6 1.1% 0 0.0% 0 0.0%