Diff Report
Run #52c96dcbc5e6a: XHProf Run (Namespace=drupal-perf-cottser)
vs.
Run #52c96d7c36f9e: XHProf Run (Namespace=drupal-perf-cottser)
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Regression/Improvement summary for substr

substrRun #52c96dcbc5e6aRun #52c96d7c36f9eDiffDiff%
Number of Function Calls297 285 -12 -4.0%
Incl. Wall Time (microsec)80 23 -57 -71.2%
Incl. Wall Time (microsec) per call 0 0 -0 -70.0%
Excl. Wall Time (microsec)80 23 -57 -71.2%
Incl. CPU (microsecs)364 296 -68 -18.7%
Incl. CPU (microsecs) per call 1 1 -0 -15.3%
Excl. CPU (microsec)364 296 -68 -18.7%
Incl. MemUse (bytes)46,528 46,032 -496 -1.1%
Incl. MemUse (bytes) per call 157 162 5 3.1%
Excl. MemUse (bytes)46,528 46,032 -496 -1.1%
Incl. PeakMemUse (bytes)21,048 21,048 0 0.0%
Incl. PeakMemUse (bytes) per call 71 74 3 4.2%
Excl. PeakMemUse (bytes)21,048 21,048 0 0.0%

Parent/Child Regression/Improvement report for substr [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
substr-12 -100.0% -57 -7.6% -68 -4.5% -496 -0.4% 0 0.0%
Exclusive Metrics Diff for Current Function-57 -100.0% -68 -100.0% -496 -100.0% 0 N/A%
Parent functions
Composer\Autoload\ClassLoader::set0 0.0% -29 -50.9% -20 -29.4% 0 0.0% 0 N/A%
Drupal\Component\Utility\Crypt::randomBytes0 0.0% -18 -31.6% -14 -20.6% -16 -3.2% 0 N/A%
Symfony\Component\Routing\RouteCompiler::compilePattern0 0.0% -8 -14.0% -17 -25.0% 0 0.0% 0 N/A%
Symfony\Component\HttpFoundation\Request::preparePathInfo0 0.0% -2 -3.5% 3 4.4% 0 0.0% 0 N/A%
Drupal\Core\Authentication\AuthenticationManager::addProvider0 0.0% 1 1.8% -1 -1.5% 0 0.0% 0 N/A%
Drupal\Core\Config\Entity\Query\Query::execute0 0.0% -1 -1.8% -1 -1.5% 0 0.0% 0 N/A%
Drupal\Component\Utility\Url::stripDangerousProtocols0 0.0% 0 0.0% 0 0.0% 0 0.0% 0 N/A%
theme0 0.0% 0 0.0% 0 0.0% 0 0.0% 0 N/A%
theme@10 0.0% 0 0.0% 0 0.0% 0 0.0% 0 N/A%
theme@20 0.0% 0 0.0% -3 -4.4% 0 0.0% 0 N/A%
Twig_Environment::getCacheFilename-12 -100.0% 0 0.0% -15 -22.1% -504 -101.6% 0 N/A%
Symfony\Component\Routing\Generator\UrlGenerator::doGenerate0 0.0% 0 0.0% -1 -1.5% 0 0.0% 0 N/A%
Drupal\Core\Database\Connection::query0 0.0% 0 0.0% 0 0.0% 0 0.0% 0 N/A%
Drupal\Core\ParamConverter\EntityConverter::convert0 0.0% 0 0.0% 1 1.5% 0 0.0% 0 N/A%
drupal_settings_initialize0 0.0% 0 0.0% 2 2.9% 0 0.0% 0 N/A%
request_path0 0.0% 0 0.0% 1 1.5% 0 0.0% 0 N/A%
Drupal\Component\Uuid\Php::generate0 0.0% 0 0.0% 5 7.4% 0 0.0% 0 N/A%
Symfony\Component\HttpFoundation\ServerBag::getHeaders0 0.0% 0 0.0% -1 -1.5% 0 0.0% 0 N/A%
Drupal\Core\Entity\Query\QueryBase::getNamespaces0 0.0% 0 0.0% 0 0.0% 24 4.8% 0 N/A%
Symfony\Component\HttpFoundation\AcceptHeaderItem::fromString0 0.0% 0 0.0% -6 -8.8% 0 0.0% 0 N/A%
Drupal\Core\Entity\Query\Sql\Tables::addField0 0.0% 0 0.0% -1 -1.5% 0 0.0% 0 N/A%