Diff Report
Run #51ec3c1813b11: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #51ec3b81ad265: XHProf Run (Namespace=drupal-perf-drupalcon)
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Regression/Improvement summary for Drupal\Core\Database\Driver\mysql\Connection::open

Drupal\Core\Database\Driver\mysql\Connection::openRun #51ec3c1813b11Run #51ec3b81ad265DiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)532 1,035 503 94.5%
Incl. Wall Time (microsec) per call 532 1,035 503 94.5%
Excl. Wall Time (microsec)37 55 18 48.6%
Incl. CPU (microsecs)203 399 196 96.6%
Incl. CPU (microsecs) per call 203 399 196 96.6%
Excl. CPU (microsec)34 47 13 38.2%
Incl. MemUse (bytes)12,952 12,952 0 0.0%
Incl. MemUse (bytes) per call 12,952 12,952 0 0.0%
Excl. MemUse (bytes)3,360 3,360 0 0.0%
Incl. PeakMemUse (bytes)12,160 12,160 0 0.0%
Incl. PeakMemUse (bytes) per call 12,160 12,160 0 0.0%
Excl. PeakMemUse (bytes)1,808 1,808 0 0.0%

Parent/Child Regression/Improvement report for Drupal\Core\Database\Driver\mysql\Connection::open [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\Database\Driver\mysql\Connection::open0 N/A% 503 20.4% 196 26.0% 0 N/A% 0 N/A%
Exclusive Metrics Diff for Current Function18 3.6% 13 6.6% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% 503 100.0% 196 100.0% 0 N/A% 0 N/A%
Child functions
PDO::__construct0 N/A% 399 79.3% 144 73.5% 0 N/A% 0 N/A%
PDO::exec0 N/A% 86 17.1% 41 20.9% 0 N/A% 0 N/A%
implode0 N/A% 0 0.0% -2 -1.0% 0 N/A% 0 N/A%