Diff Report
Run #538e3ac0de109: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #538e3b37c1a66: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for Drupal\Core\Cache\DatabaseBackend::checksumTags

Drupal\Core\Cache\DatabaseBackend::checksumTagsRun #538e3ac0de109Run #538e3b37c1a66DiffDiff%
Number of Function Calls58 60 2 3.4%
Incl. Wall Time (microsec)3,559 3,688 129 3.6%
Incl. Wall Time (microsec) per call 61 61 0 0.2%
Excl. Wall Time (microsec)842 875 33 3.9%
Incl. CPU (microsecs)2,529 2,587 58 2.3%
Incl. CPU (microsecs) per call 44 43 -0 -1.1%
Excl. CPU (microsec)680 693 13 1.9%
Incl. MemUse (bytes)51,200 52,176 976 1.9%
Incl. MemUse (bytes) per call 883 870 -13 -1.5%
Excl. MemUse (bytes)-114,016 -114,960 -944 -0.8%
Incl. PeakMemUse (bytes)87,104 87,024 -80 -0.1%
Incl. PeakMemUse (bytes) per call 1,502 1,450 -51 -3.4%
Excl. PeakMemUse (bytes)14,728 15,672 944 6.4%

Parent/Child Regression/Improvement report for Drupal\Core\Cache\DatabaseBackend::checksumTags [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::checksumTags2 25.0% 129 3.0% 58 1.6% 976 0.9% -80 -0.1%
Exclusive Metrics Diff for Current Function33 25.6% 13 22.4% -944 -96.7% 944 1180.0%
Parent function
Drupal\Core\Cache\DatabaseBackend::prepareItem2 100.0% 129 100.0% 58 100.0% 976 100.0% -80 -100.0%
Child functions
Drupal\Core\Database\Connection::query0 0.0% 92 71.3% 24 41.4% 0 0.0% 0 0.0%
array_diff2 33.3% 8 6.2% 24 41.4% 176 18.0% -8 -10.0%
drupal_static2 33.3% -4 -3.1% 4 6.9% 0 0.0% 48 60.0%
array_keys2 33.3% 3 2.3% -1 -1.7% 1,744 178.7% -1,064 -1330.0%
Drupal\Core\Database\Statement::fetchAllAssoc0 0.0% -2 -1.6% -4 -6.9% 0 0.0% 0 0.0%
array_fill_keys0 0.0% -1 -0.8% -2 -3.4% 0 0.0% 0 0.0%