Diff Report
Run #519ffa0e6cdec: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #519ffa6332b29: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::prepareItem

Drupal\Core\Cache\DatabaseBackend::prepareItemRun #519ffa0e6cdecRun #519ffa6332b29DiffDiff%
Number of Function Calls66 66 0 0.0%
Incl. Wall Time (microsec)15,029 14,858 -171 -1.1%
Incl. Wall Time (microsec) per call 228 225 -3 -1.1%
Excl. Wall Time (microsec)835 915 80 9.6%
Incl. CPU (microsecs)8,000 20,001 12,001 150.0%
Incl. CPU (microsecs) per call 121 303 182 150.0%
Excl. CPU (microsec)0 4,001 4,001 N/A%
Incl. MemUse (bytes)1,415,248 1,418,144 2,896 0.2%
Incl. MemUse (bytes) per call 21,443 21,487 44 0.2%
Excl. MemUse (bytes)-173,288 -173,960 -672 -0.4%
Incl. PeakMemUse (bytes)1,957,800 1,961,096 3,296 0.2%
Incl. PeakMemUse (bytes) per call 29,664 29,714 50 0.2%
Excl. PeakMemUse (bytes)8,288 8,360 72 0.9%

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% -171 -8.2% 12,001 150.0% 2,896 4.3% 3,296 4.8%
Exclusive Metrics Diff for Current Function80 46.8% 4,001 33.3% -672 -23.2% 72 2.2%
Parent function
Drupal\Core\Cache\DatabaseBackend::getMultiple0 N/A% -171 -100.0% 12,001 100.0% 2,896 100.0% 3,296 100.0%
Child functions
unserialize0 N/A% -130 -76.0% 0 0.0% 3,576 123.5% 3,232 98.1%
Drupal\Core\Cache\DatabaseBackend::checksumTags0 N/A% -124 -72.5% 8,000 66.7% -8 -0.3% -8 -0.2%
explode0 N/A% 3 1.8% 0 0.0% 0 0.0% 0 0.0%