巨大的堆转储(11 MAT )- Jhat失败& Eclipse MAT需要帮助

Question

我们的EA中有一个内存错误，我们使用-XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/path/to/some/dir在OOM时转储堆。

我们的堆内存为12 We，perm代为256 We。

堆转储是在运行应用程序的Linux框中生成的，其大小为11.5GB。我们没有把它下载到本地的特权。

当我们试图使用杰特分析11 an堆转储时，它会抛出一个OOM。

我们尝试了来自Linux的以下命令。

jhat java_pid1491.hprof
jhat -J-Xmx16g -XX:-UseBiasedLocking java_pid1491.hprof
jhat -J-d64 -J-Xmx16g -J-XX:-UseBiasedLocking java_pid1491.hprof#1

对于所有选项，它在读取转储数分钟(>30分钟)后抛出OOM异常。

我们搜索了它，发现垫子是一个功能强大的堆转储分析器，但不是在LINUX中使用它的一种方法。

任何建议都会有更大的帮助。谢谢。

改性：

安装在Linux x86_64机器上，但在执行./MemoryAnalyzer时出现了以下错误

(.:17319): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(.:17319): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
(.:17319): Gtk-CRITICAL **: gtk_settings_get_for_screen: assertion `GDK_IS_SCREEN (screen)' failed
(.:17319): GLib-GObject-CRITICAL **: g_object_get: assertion `G_IS_OBJECT (object)' failed
(.:17319): Gtk-WARNING **: Screen for GtkWindow not set; you must always set
a screen for a GtkWindow before using the window
(.:17319): Gdk-CRITICAL **: gdk_pango_context_get_for_screen: assertion `GDK_IS_SCREEN (screen)' failed
(.:17319): Pango-CRITICAL **: pango_context_set_font_description: assertion `context != NULL' failed
(.:17319): Pango-CRITICAL **: pango_context_set_base_dir: assertion `context != NULL' failed
(.:17319): Pango-CRITICAL **: pango_context_set_language: assertion `context != NULL' failed
(.:17319): Pango-CRITICAL **: pango_layout_new: assertion `context != NULL' failed
(.:17319): Pango-CRITICAL **: pango_layout_set_text: assertion `layout != NULL' failed
(.:17319): Pango-CRITICAL **: pango_layout_set_attributes: assertion `layout != NULL' failed
(.:17319): Pango-CRITICAL **: pango_layout_set_alignment: assertion `layout != NULL' failed
(.:17319): Pango-CRITICAL **: pango_layout_set_ellipsize: assertion `PANGO_IS_LAYOUT (layout)' failed
(.:17319): Pango-CRITICAL **: pango_layout_set_single_paragraph_mode: assertion `PANGO_IS_LAYOUT (layout)' failed
(.:17319): Pango-CRITICAL **: pango_layout_set_width: assertion `layout != NULL' failed
(.:17319): Pango-CRITICAL **: pango_layout_get_extents: assertion `layout != NULL' failed
(.:17319): Gtk-CRITICAL **: gtk_icon_theme_get_for_screen: assertion `GDK_IS_SCREEN (screen)' failed
(.:17319): Gtk-CRITICAL **: gtk_settings_get_for_screen: assertion `GDK_IS_SCREEN (screen)' failed
(.:17319): Gtk-CRITICAL **: gtk_icon_size_lookup_for_settings: assertion `GTK_IS_SETTINGS (settings)' failed
(.:17319): Gtk-WARNING **: Invalid icon size 6
(.:17319): Gtk-CRITICAL **: gtk_icon_theme_load_icon: assertion `GTK_IS_ICON_THEME (icon_theme)' failed
Segmentation fault

我试过./ParseHeapDump.sh ../java_pid1491.hprof这个，得到了以下错误，

Caused by: java.lang.NoClassDefFoundError: com/ibm/dtfj/image/CorruptDataException
        at org.eclipse.mat.dtfj.InitDTFJ.stop(InitDTFJ.java:70)

Answer 1

我昨天在Linux上用垫子..。查看正确的版本这里

Answer 2

忘了Jhat吧，您需要100 G以上的RAM来解析这个转储，这将花费很长时间，而且很难找到一些东西。我刚在SUSE 11机器上安装了垫子。完美无缺地工作了。您能确保MAT使用的是正确的JVM吗？不确定我们是否用其他任何东西测试它，然后是SUN/SAP JVM。

你好，马库斯(柯勒姆)

Answer 3

我们过去曾成功地使用Netbeans来分析OOM错误。它似乎能处理Eclipse和JHAT不能处理的问题。