Diff Report
Run #51ec3c5ab9ae4: 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 #51ec3c5ab9ae4Run #51ec3b81ad265DiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)643 1,035 392 61.0%
Incl. Wall Time (microsec) per call 643 1,035 392 61.0%
Excl. Wall Time (microsec)36 55 19 52.8%
Incl. CPU (microsecs)206 399 193 93.7%
Incl. CPU (microsecs) per call 206 399 193 93.7%
Excl. CPU (microsec)33 47 14 42.4%
Incl. MemUse (bytes)12,936 12,952 16 0.1%
Incl. MemUse (bytes) per call 12,936 12,952 16 0.1%
Excl. MemUse (bytes)3,344 3,360 16 0.5%
Incl. PeakMemUse (bytes)12,144 12,160 16 0.1%
Incl. PeakMemUse (bytes) per call 12,144 12,160 16 0.1%
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% 392 104.8% 193 18.2% 16 0.0% 16 0.0%
Exclusive Metrics Diff for Current Function19 4.8% 14 7.3% 16 100.0% 0 0.0%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% 392 100.0% 193 100.0% 16 100.0% 16 100.0%
Child functions
PDO::__construct0 N/A% 292 74.5% 144 74.6% 0 0.0% 0 0.0%
PDO::exec0 N/A% 81 20.7% 36 18.7% 0 0.0% 0 0.0%
implode0 N/A% 0 0.0% -1 -0.5% 0 0.0% 16 100.0%