Revert "Bug 493687 - UI slow to respond during file search"

This reverts commit 31453f940bb5a7a2a6e89c1c7b73500e1a306a24.

Change-Id: I9e85a29da4873a6df1c1c29a0d542537b6e76b3f
diff --git a/org.eclipse.search/search/org/eclipse/search/internal/core/text/TextSearchVisitor.java b/org.eclipse.search/search/org/eclipse/search/internal/core/text/TextSearchVisitor.java
index ba0b815..35e958a 100644
--- a/org.eclipse.search/search/org/eclipse/search/internal/core/text/TextSearchVisitor.java
+++ b/org.eclipse.search/search/org/eclipse/search/internal/core/text/TextSearchVisitor.java
@@ -74,7 +74,7 @@
 public class TextSearchVisitor {
 
 	public static final boolean TRACING= "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.search/perf")); //$NON-NLS-1$ //$NON-NLS-2$
-	private static final int NUMBER_OF_LOGICAL_THREADS= Math.max(1, Runtime.getRuntime().availableProcessors() / 2);
+	private static final int NUMBER_OF_LOGICAL_THREADS= Runtime.getRuntime().availableProcessors();
 	private static final int FILES_PER_JOB= 50;
 
 	public static class ReusableMatchAccess extends TextSearchMatchAccess {