Diff Report
Run #519fc84e17238: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519fc53e46a65: 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 #519fc84e17238Run #519fc53e46a65DiffDiff%
Number of Function Calls68 68 0 0.0%
Incl. Wall Time (microsec)7,953 7,905 -48 -0.6%
Incl. Wall Time (microsec) per call 117 116 -1 -0.6%
Excl. Wall Time (microsec)651 654 3 0.5%
Incl. CPU (microsecs)8,000 8,000 0 0.0%
Incl. CPU (microsecs) per call 118 118 0 0.0%
Excl. CPU (microsec)4,000 0 -4,000 -100.0%
Incl. MemUse (bytes)1,495,560 1,495,624 64 0.0%
Incl. MemUse (bytes) per call 21,994 21,994 1 0.0%
Excl. MemUse (bytes)-189,752 -189,752 0 0.0%
Incl. PeakMemUse (bytes)1,967,200 1,967,512 312 0.0%
Incl. PeakMemUse (bytes) per call 28,929 28,934 5 0.0%
Excl. PeakMemUse (bytes)6,504 6,504 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% -48 -8.9% 0 0.0% 64 0.8% 312 3.0%
Exclusive Metrics Diff for Current Function3 6.2% -4,000 N/A% 0 0.0% 0 0.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -48 -100.0% 0 N/A% 64 100.0% 312 100.0%
Child functions
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -57 -118.8% 0 N/A% 0 0.0% 168 53.8%
unserialize0 N/A% 6 12.5% 4,000 N/A% 64 100.0% 144 46.2%
explode0 N/A% 0 0.0% 0 N/A% 0 0.0% 0 0.0%