Attachment 26232 Details for Bug 106202 – Patch to set the size of the caches relatively to the max heap size

[patch] Patch to set the size of the caches relatively to the max heap size

patch106202_org.eclipse.jdt.core.txt (text/plain), 2.73 KB, created by Jerome Lanneluc

on 2005-08-18 11:03:32 EDT

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Creator: Jerome Lanneluc

Created: 2005-08-18 11:03:32 EDT

Size: 2.73 KB

patch

obsolete

>Index: model/org/eclipse/jdt/internal/core/JavaModelCache.java
>===================================================================
>RCS file: /home/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/JavaModelCache.java,v
>retrieving revision 1.20
>diff -u -r1.20 JavaModelCache.java
>--- model/org/eclipse/jdt/internal/core/JavaModelCache.java	29 Mar 2005 13:36:10 -0000	1.20
>+++ model/org/eclipse/jdt/internal/core/JavaModelCache.java	18 Aug 2005 14:57:44 -0000
>@@ -19,12 +19,11 @@
>  * The cache of java elements to their respective info.
>  */
> public class JavaModelCache {
>-	public static final int BASE_VALUE = 20;
> 	public static final int DEFAULT_PROJECT_SIZE = 5;  // average 25552 bytes per project.
>-	public static final int DEFAULT_ROOT_SIZE = BASE_VALUE*10; // average 2590 bytes per root -> maximum size : 25900*BASE_VALUE bytes
>-	public static final int DEFAULT_PKG_SIZE = BASE_VALUE*100; // average 1782 bytes per pkg -> maximum size : 178200*BASE_VALUE bytes
>-	public static final int DEFAULT_OPENABLE_SIZE = BASE_VALUE*100; // average 6629 bytes per openable (includes children) -> maximum size : 662900*BASE_VALUE bytes
>-	public static final int DEFAULT_CHILDREN_SIZE = BASE_VALUE*100*20; // average 20 children per openable
>+	public static final int DEFAULT_ROOT_SIZE = 50; // average 2590 bytes per root -> maximum size : 25900*BASE_VALUE bytes
>+	public static final int DEFAULT_PKG_SIZE = 500; // average 1782 bytes per pkg -> maximum size : 178200*BASE_VALUE bytes
>+	public static final int DEFAULT_OPENABLE_SIZE = 500; // average 6629 bytes per openable (includes children) -> maximum size : 662900*BASE_VALUE bytes
>+	public static final int DEFAULT_CHILDREN_SIZE = 500*20; // average 20 children per openable
> 	
> 	/**
> 	 * Active Java Model Info
>@@ -57,11 +56,13 @@
> 	protected Map childrenCache;
> 	
> public JavaModelCache() {
>+	// set the size of the caches in function of the maximum amount of memory available
>+	double ratio =  Runtime.getRuntime().maxMemory() / 64000000; // 64000000 is the base memory for most JVM
> 	this.projectCache = new HashMap(DEFAULT_PROJECT_SIZE); // NB: Don't use a LRUCache for projects as they are constantly reopened (e.g. during delta processing)
>-	this.rootCache = new ElementCache(DEFAULT_ROOT_SIZE);
>-	this.pkgCache = new ElementCache(DEFAULT_PKG_SIZE);
>-	this.openableCache = new ElementCache(DEFAULT_OPENABLE_SIZE);
>-	this.childrenCache = new HashMap(DEFAULT_CHILDREN_SIZE);
>+	this.rootCache = new ElementCache((int) (DEFAULT_ROOT_SIZE * ratio));
>+	this.pkgCache = new ElementCache((int) (DEFAULT_PKG_SIZE * ratio));
>+	this.openableCache = new ElementCache((int) (DEFAULT_OPENABLE_SIZE * ratio));
>+	this.childrenCache = new HashMap((int) (DEFAULT_CHILDREN_SIZE * ratio));
> }
> 
> /**

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Attachments on bug 106202: 26232