Diff Report
Run #519fe6587b366: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519fe82fef731: 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 #519fe6587b366Run #519fe82fef731DiffDiff%
Number of Function Calls51 51 0 0.0%
Incl. Wall Time (microsec)12,398 11,528 -870 -7.0%
Incl. Wall Time (microsec) per call 243 226 -17 -7.0%
Excl. Wall Time (microsec)481 512 31 6.4%
Incl. CPU (microsecs)24,000 12,000 -12,000 -50.0%
Incl. CPU (microsecs) per call 471 235 -235 -50.0%
Excl. CPU (microsec)0 0 0 N/A%
Incl. MemUse (bytes)1,590,744 1,592,200 1,456 0.1%
Incl. MemUse (bytes) per call 31,191 31,220 29 0.1%
Excl. MemUse (bytes)-140,784 -141,120 -336 -0.2%
Incl. PeakMemUse (bytes)1,946,120 1,947,992 1,872 0.1%
Incl. PeakMemUse (bytes) per call 38,159 38,196 37 0.1%
Excl. PeakMemUse (bytes)4,376 4,376 0 0.0%

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::prepareItem0 N/A% -870 -20.7% -12,000 -300.0% 1,456 2.3% 1,872 3.0%
Exclusive Metrics Diff for Current Function31 3.6% 0 0.0% -336 -23.1% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -870 -100.0% -12,000 -100.0% 1,456 100.0% 1,872 100.0%
Child functions
unserialize0 N/A% -822 -94.5% -4,000 -33.3% 1,792 123.1% 1,880 100.4%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -56 -6.4% -8,000 -66.7% 0 0.0% -8 -0.4%
explode0 N/A% -23 -2.6% 0 0.0% 0 0.0% 0 0.0%