Question

这个例子简单，消耗高CPU，是bug还是设计技术失败？细节：让程序运行并注意CPU消耗正在增加......

许多程序员，像我一样，像javafx，当这种方法弹出时，帖子工作人员应该把setCache（true）; 但显然它没有解决。

我也认为Platform.runLater，当有很多它进入队列并最终损害使用太多的CPU时。

问题出在哪里，我希望该地区的同事检查你的javafx是否遇到同样的错误!!？

在Ubuntu中，我打开了teminal并调用了＃34; top＆＃34;，并打开了cpu使用情况统计信息的图形显示，确实出现了问题。

Ubuntu 14.04.1

Prism pipeline init order: es2 sw   Using java-based Pisces
rasterizer   Using dirty region optimizations   Not using texture mask
for primitives   Not forcing power of 2 sizes for textures   Using
hardware CLAMP_TO_ZERO mode Opting in for HiDPI pixel scaling Prism
pipeline name = com.sun.prism.es2.ES2Pipeline Loading ES2 native
library ... prism_es2     succeeded. GLFactory using
com.sun.prism.es2.X11GLFactory (X) Got class = class
com.sun.prism.es2.ES2Pipeline Initialized prism pipeline:
com.sun.prism.es2.ES2Pipeline Maximum supported texture size: 16384
Maximum texture size clamped to 4096 Non power of two texture support
= true Maximum number of vertex attributes = 16 Maximum number of uniform vertex components = 16384 Maximum number of uniform fragment
components = 16384 Maximum number of varying components = 128 Maximum
number of texture units usable in a vertex shader = 16 Maximum number
of texture units usable in a fragment shader = 16 Graphics Vendor:
X.Org
   Renderer: Gallium 0.4 on AMD ARUBA (DRM 2.43.0, LLVM 3.8.0)
    Version: 3.0 Mesa 11.2.0  vsync: true vpipe: true new alphas ES2ResourceFactory: Prism - createStockShader:
Texture_LinearGradient_PAD.frag new alphas ES2ResourceFactory: Prism -
createStockShader: Solid_TextureRGB.frag

PPSRenderer：scenario.effect - createShader：Blend_HARD_LIGHT PPSRenderer：scenario.effect - createShader：LinearConvolveShadow_24

java version＆＃34; 1.8.0_112＆＃34; Java（TM）SE运行时环境（构建 1.8.0_112-b15）Java HotSpot（TM）64位服务器VM（内置25.112-b15，混合模式）

import javafx.animation.KeyValue;  
import javafx.animation.Timeline;  
import javafx.application.Application;  
import javafx.event.ActionEvent;  
import javafx.event.EventHandler;  
import javafx.scene.CacheHint;  
import javafx.scene.Group;  
import javafx.scene.Scene;  
import javafx.scene.control.Button;  
import javafx.scene.control.Label;  
import javafx.scene.image.Image;  
import javafx.scene.image.ImageView;  
import javafx.scene.layout.StackPane;  
import javafx.stage.Stage;  
import javafx.util.Duration;  


public class AnimatedTeste extends Application {  

    @Override  
    public void start(Stage primaryStage) {  

        ImageView imv = new ImageView("http://icons.iconarchive.com/icons/icons-land/sport/16/Tennis-Ball-icon.png");  
        Label  label = new Label("");  
        label.setGraphic(imv);  


        Timeline tl = new Timeline(new KeyFrame(  
            Duration.millis(500),  

            new KeyValue(label.layoutYProperty(), label.getLayoutY()+15 ),   
            new KeyValue(label.rotateProperty(), 360)  

            ));   


        tl.setAutoReverse(true);  
        tl.setCycleCount(Timeline.INDEFINITE);  
        tl.play();  


        Group root = new Group();  
        root.getChildren().add(label);  

        Scene scene = new Scene(root, 300, 250);  



        primaryStage.setTitle("Hello World!");  
        primaryStage.setScene(scene);  
        primaryStage.show();  
    }  

    public static void main(String[] args) {  
        launch(args);  
    }  

}

由于

为什么这么简单的动画消耗高CPU？

0 个答案: