慢速Java Swing菜单的解决方法 [英] Workaround for Slow Java Swing Menus
问题描述
在Java 7和8中，Swing菜单中存在一个错误，导致在其他X11应用程序正在运行时通过X11远程运行应用程序时，它会变慢.此问题在Java 7中引入，但从未得到修复.有没有人有任何解决方法的建议.使用nxclient解决了这个Swing菜单问题，但是引入了自己不受欢迎的问题.
In Java 7 and 8 there is a bug in Swing menus that causes it to be slow when running an application remotely over X11 while other X11 applications are running. This issue was introduced in Java 7 and has never been fixed. Does anyone have any suggestions on a workaround. Using nxclient addresses this Swing menu issue, but introduces its own unwelcome issues.
重现Swing菜单问题的步骤是: -通过一些活动在本地运行任何X11应用程序 -使用ssh登录到远程服务器-Y someserver -执行任何运行Java 7或8的Java GUI应用程序(例如jvisualvm) -选择菜单并观察几秒钟的响应时间
The steps to reproduce the Swing menu issue are: - run any X11 application locally with some activity - log into a remote server using ssh -Y someserver - execute any Java GUI application (e.g. jvisualvm) running Java 7 or 8 - select a menu and observe a several second delay in response
推荐答案
只花了整整一天的时间来解决同一问题.那里几乎没有任何信息.
Just spent an entire day trying to solve the same issue. There's barely any info out there.
本地计算机:
- Linux FedoraCore 20，KDE桌面，NVIDIA GeForce 7300 LE
- Linux FedoraCore 20，KDE桌面，NVIDIA GeForce GT 720
通过ssh运行远程Java GUI，对于PC2，摆动弹出窗口非常慢.桌面冻结，直到出现弹出窗口.另一方面，PC1运行非常快速/流畅，完全没有问题.
Running remote Java GUI over ssh, swing popups are extremely slow for PC2. Desktop freezes until popup appears. On the other hand, PC1 runs very fast/smooth, with no problems at all.
在我的情况下，问题是PC2具有2个监视器.我可以找到的最接近的错误报告是: JDK-8004103:sun.awt.X11.XToolkit.getScreenInsets()可能很慢，而且似乎仍处于打开状态.
Turns out, in my case, the problem is that PC2 has 2 monitors. The closest bug report I could find is: JDK-8004103 : sun.awt.X11.XToolkit.getScreenInsets() may be very slow and it appears to be still open.
临时解决方法:
- 在KDE中，禁用第二个监视器，启动应用程序，启用第二个监视器
- 在Gnome桌面中工作(我的Gnome环境不受此问题影响)
- 使用Java 6启动远程Java应用程序(Java6中不存在此问题)
这些都不是理想的解决方法，但是考虑到每次单击菜单项时，我的桌面都会冻结3-4秒，因此暂时可以解决.
None of these are ideal workarounds, but considering that my Desktop freezes for 3-4 seconds every time I click on a menu item, they'll do for the time being.
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