Diff Report
Run #52f2e60305388: XHProf Run (Namespace=drupal-perf-drupalcon)
vs.
Run #52f2e62cef49a: 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 #52f2e60305388Run #52f2e62cef49aDiffDiff%
Number of Function Calls1 1 0 0.0%
Incl. Wall Time (microsec)625 773 148 23.7%
Incl. Wall Time (microsec) per call 625 773 148 23.7%
Excl. Wall Time (microsec)49 51 2 4.1%
Incl. CPU (microsecs)279 290 11 3.9%
Incl. CPU (microsecs) per call 279 290 11 3.9%
Excl. CPU (microsec)42 45 3 7.1%
Incl. MemUse (bytes)12,992 12,992 0 0.0%
Incl. MemUse (bytes) per call 12,992 12,992 0 0.0%
Excl. MemUse (bytes)3,360 3,360 0 0.0%
Incl. PeakMemUse (bytes)12,712 12,712 0 0.0%
Incl. PeakMemUse (bytes) per call 12,712 12,712 0 0.0%
Excl. PeakMemUse (bytes)1,976 1,976 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% 148 6.5% 11 0.5% 0 0.0% 0 0.0%
Exclusive Metrics Diff for Current Function2 1.4% 3 27.3% 0 N/A% 0 N/A%
Parent function
Drupal\Core\Database\Database::openConnection0 N/A% 148 100.0% 11 100.0% 0 N/A% 0 N/A%
Child functions
PDO::__construct0 N/A% 139 93.9% 19 172.7% 0 N/A% 0 N/A%
PDO::exec0 N/A% 5 3.4% -15 -136.4% 0 N/A% 0 N/A%
implode0 N/A% 2 1.4% 4 36.4% 0 N/A% 0 N/A%