java now is using 3/4th of the physical memory (#7)

README.md

@@ -1,5 +1,26 @@
 # db-visualization-toolkit-electron
-Electron deployment for [db-visualization-toolkit](https://github.com/keeps/db-visualization-toolkit)
+
+A cross-platform app built on [Electron](http://electronjs.org) that uses [Database Visualization Toolkit](https://github.com/keeps/db-visualization-toolkit) as a viewer for relational databases.
+
+## Installing
+
+You can download the latest release for your operating system [here](https://github.com/keeps/db-visualization-toolkit-electron/releases/latest).
+
+
+#### For Linux
+- Download [AppImage](https://github.com/keeps/db-visualization-toolkit-electron/releases/latest) file
+- Use chmod u+x on the downloaded file to make it executable.
+
+#### For Mac
+- Download [dmg](https://github.com/keeps/db-visualization-toolkit-electron/releases/latest) file
+- Double-click on the downloaded file to expand the contents.
+- Drag dbvtk-gui to the Applications folder
+
+#### For Windows
+- Download [exe](https://github.com/keeps/db-visualization-toolkit-electron/releases/latest) file
+- Once it is downloaded, run the installer (dbvtk-gui.exe).
+
+**This app will automatically update when a new release is available.**
 
 ## Building
 You'll need [Node.js](https://nodejs.org) installed on your computer in order to build this app.
@@ -21,15 +42,15 @@ More information about these tools can be found at http://database-preservation.
 
 ## To report a problem or make a suggestion
 
-Create a new issue at https://github.com/keeps/db-visualization-toolkit/issues/new
+Create a new issue at https://github.com/keeps/db-visualization-toolkit-electron/issues/new
 
 Or if the problem/suggestion is related to the Database Preservation Toolkit, create the issue at https://github.com/keeps/db-preservation-toolkit/issues/new
 
 ## Information & Commercial support
 
 For more information or commercial support, contact [KEEP SOLUTIONS](http://www.keep.pt/contactos/?lang=en).
 
-## Development [![Build Status](https://travis-ci.org/keeps/db-visualization-toolkit.png?branch=master)](https://travis-ci.org/keeps/db-visualization-toolkit)
+## Development [![Build Status](https://travis-ci.org/keeps/db-visualization-toolkit-electron.png?branch=master)](https://travis-ci.org/keeps/db-visualization-toolkit-electron)
 
 ## License
 

app/components/dbvtk.js

@@ -4,6 +4,7 @@ const waitOn = require('wait-on');
 const path = require('path');
 const fs = require('fs');
 const tmp = require('tmp');
+const os = require("os");
 const { getjavaVersionAndPath } = require('../helpers/javaHelper');
 
 module.exports = class Dbvtk {
@@ -33,15 +34,24 @@ module.exports = class Dbvtk {
 
     async createProcess() {
         let java = getjavaVersionAndPath();
-        
+
         let serverPortFile = tmp.tmpNameSync();
         console.log("Port file at " + serverPortFile);
 
         let jvmLog = tmp.tmpNameSync();
         console.log("JVM log at " + jvmLog);
 
+        // get 3/4th of physical memory for set maximum heap size
+        // This value must be a multiple of 1024
+        let maxHeapMemory = Math.floor(os.totalmem() * 3 / (4 * 1024)) * 1024;
+        console.log("Max HEAP: " + (maxHeapMemory / Math.pow(1024, 3)).toFixed(2) + " GB");
+
         // Ask for a random unassigned port and to write it down in serverPortFile
-        var javaVMParameters = ["-Dserver.port=0", "-Dserver.port.file=" + serverPortFile];
+        let javaVMParameters = [
+            "-Dserver.port=0",
+            "-Dserver.port.file=" + serverPortFile,
+            "-Xmx" + maxHeapMemory
+        ];
 
         this.process = spawn(java.path, ['-jar'].concat(javaVMParameters).concat("resources/war/" + this.filename), {
             cwd: app.getAppPath().replace('app.asar', 'app.asar.unpacked') + '/'