ADDITIONAL SYSTEM INFORMATION :
Windows 8.1
Java 11.0.1

A DESCRIPTION OF THE PROBLEM :
Layouting text glyph vectors takes considerably longer in Java 11, compared to Java 8.
For example, use the attached source code(it is from another JDK bug, I am not the author).


REGRESSION : Last worked in version 8u192

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the source code on either all fonts in Fonts dir, or copy a smaller subset of fonts, e.g. "Arial" fonts to a different directory and run the code.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
At least similar text glyph layout performance when comparing Java8 to Java 11.
ACTUAL -
Layout is slower 2-5 times.

Profiling for all fonts in Fonts dir.
In Java 11.0.1:
java.awt.Font.layoutGlyphVector 182s
sun.font.GlyphLayout.layout 182s
sun.font.GlyphLayout$EngineRecord.layout 180s
sun.font.SunLayoutEngine.layout 180s
sun.font.SunLayoutEngine.shape 180s

Java8:
java.awt.Font.layoutGlyphVector 73s
sun.font.GlyphLayout.layout 73s
sun.font.GlyphLayout$EngineRecord.layout 73s
sun.font.SunLayoutEngine.layout 73s
sun.font.SunLayoutEngine.nativeLayout 72s

For a font like Arial:
Java11.0.1:
c:\windows\fonts\arial.ttf;Arial; 493ms
c:\windows\fonts\arialbd.ttf;Arial Bold; 492ms
c:\windows\fonts\arialbi.ttf;Arial Bold Italic; 392ms

Java 8:
c:\windows\fonts\arial.ttf;Arial; 90ms
c:\windows\fonts\arialbd.ttf;Arial Bold; 91ms
c:\windows\fonts\arialbi.ttf;Arial Bold Italic; 89ms

The layout time difference is ~5 times.

---------- BEGIN SOURCE ----------
This is the code, that was previously used is bug description.
public class GVT
{
	//Adapt FONT_DIRECTORY for other OSs or specific folders with a selected sets of fonts ("Arial" and "Arial Unicode MS" highly recommended)
	private static final String FONT_DIRECTORY = "c:\\windows\\fonts\\";
	private static final int REPETITIONS = 5_000;
	private static final char[] TEXT = "X sosofts 0,0 Steffieie Y".toCharArray();
	private static final FontRenderContext FRC = new FontRenderContext(null, true, true);

	public static void main(String[] args) throws Throwable
	{
		System.out.println("Java " + System.getProperty("java.version") + " on " + System.getProperty("os.name") + "\n");
		for (File fontFile : new File(FONT_DIRECTORY).listFiles())
		{
			if (fontFile.toString().toLowerCase().endsWith(".ttf"))
			{
				Font font = Font.createFont(Font.TRUETYPE_FONT, fontFile).deriveFont(123f)
						.deriveFont(Collections.singletonMap(TextAttribute.KERNING, TextAttribute.KERNING_ON))
						.deriveFont(Collections.singletonMap(TextAttribute.LIGATURES, TextAttribute.LIGATURES_ON));
				System.out.print(fontFile.toString() + ";" + font.getName() + ";");
				long start = System.nanoTime();
				for (int i = 0; i < REPETITIONS; i++)
				{
					font.layoutGlyphVector(FRC, TEXT, 0, TEXT.length, 0);
				}
				System.out.println((System.nanoTime() - start) / REPETITIONS / 1000);
			}
		}
	}
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
No workaround

FREQUENCY : always