XHProf: Hierarchical Profiler Report

Run Report: Run #55ca0153deabc: XHProf Run (Namespace=drupal-perf-moshe)
Tip: Click a function name below to drill down.

Function Name	Calls	Calls%	Incl. Wall Time (microsec)	IWall%	Incl. MemUse (bytes)	IMemUse%	Incl. PeakMemUse (bytes)	IPeakMemUse%
*Current Function*
Drupal\Core\Asset\CssCollectionOptimizer::optimize	1	1.4%	25,627	0.7%	38,540	0.1%	270,572	0.6%
Exclusive Metrics for Current Function			387	1.5%	-359,276	-932.2%	184	0.1%
*Parent function*
Drupal\Core\Asset\AssetResolver::getCssAssets	1	100.0%	25,627	100.0%	38,540	100.0%	270,572	100.0%
*Child functions*
Drupal\Core\Asset\CssOptimizer::optimize	45	69.2%	15,491	60.4%	140,736	365.2%	104,392	38.6%
Drupal\Core\State\State::set	3	4.6%	5,088	19.9%	3,760	9.8%	0	0.0%
Drupal\Core\Asset\AssetDumper::dump	3	4.6%	3,095	12.1%	13,004	33.7%	0	0.0%
Drupal\Core\State\State::get	1	1.5%	481	1.9%	520	1.3%	2,784	1.0%
Drupal\Core\Asset\CssCollectionGrouper::group	1	1.5%	344	1.3%	43,268	112.3%	37,416	13.8%
preg_replace	3	4.6%	300	1.2%	193,708	502.6%	125,304	46.3%
Drupal\Core\Asset\CssCollectionOptimizer::generateHash	3	4.6%	243	0.9%	1,808	4.7%	492	0.2%
preg_match_all	3	4.6%	195	0.8%	588	1.5%	0	0.0%
implode	3	4.6%	3	0.0%	424	1.1%	0	0.0%