Bug 81277 Uncompressed Tar archiving is 10 to 20 X slower then zip or compressed tar
Take a medium sized plugin project and export it as zip/tar/compressed tar and note that the tar export is 10 or 20 X slower then the other two.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/TarFileExporter.java
private TarOutputStream outputStream;
    private GZIPOutputStream gzipOutputStream;
    
    /**
     *	Create an instance of this class.
     *
     *	@param filename java.lang.String
     *	@param compress boolean
     *	@exception java.io.IOException
     */
    public TarFileExporter(String filename, boolean compress) throws IOException {
    	if(compress) {
    		gzipOutputStream = new GZIPOutputStream(new FileOutputStream(filename));
    		outputStream = new TarOutputStream(gzipOutputStream);
    	} else {
    		outputStream = new TarOutputStream(new FileOutputStream(filename));
    	}
    }
    /**
     *	Do all required cleanup now that we're finished with the