Question

我正在研究客户的核心转储。因此，我将无法共享导致错误的代码片段。不过，我希望有人会有一些提示如何继续下去。

我有一个通过套接字进行通信的应用程序。它会打开多个客户端的连接数。经过一段时间后，它会因OutOfMemoryException而失败，即使服务器上有足够的内存且进程不超过32位的限制。

来自核心转储的线程池状态如下所示：

!ThreadPool
CPU utilization: 17%
Worker Thread: Total: 16 Running: 0 Idle: 16 MaxLimit: 1023 MinLimit: 16
Work Request in Queue: 0
--------------------------------------
Number of Timers: 2
--------------------------------------
Completion Port Thread:Total: 29 Free: 0 MaxFree: 32 CurrentLimit: 29 
MaxLimit: 1000 MinLimit: 16

29个完成端口线程中的大多数抛出OutOfMemoryException。

部分内容！线程输出如下所示：

 0    1 1c548 00390680   2026020 Preemptive  00000000:00000000 0038a7f0 0     STA 
   2    2 2b770 0039db70     2b220 Preemptive  00000000:00000000 0038a7f0 0     MTA (Finalizer) 
   6    3 2c080 003ef588   a029220 Preemptive  00000000:00000000 0038a7f0 0     MTA (Threadpool Completion Port) 
   7    4 22ae4 004067e0   202b020 Preemptive  0F0905F0:00000000 0038a7f0 0     MTA 
  11    5 1ba94 03a79358   a029220 Preemptive  00000000:00000000 03a99928 0     MTA (Threadpool Completion Port) 
  12    6 3105c 03a7c138   a029220 Preemptive  00000000:00000000 03a99928 0     MTA (Threadpool Completion Port) System.OutOfMemoryException 016c4bc8
  13    7 250f0 03a7c958   a029220 Preemptive  0F5B50BC:00000000 03a99928 0     MTA (Threadpool Completion Port) System.OutOfMemoryException 00ef70fc
  14    8 32d9c 03a7d578   a029220 Preemptive  00000000:00000000 03a99928 0     MTA (Threadpool Completion Port) System.OutOfMemoryException 016c896c
  15    9 3281c 03a7dd98   a029220 Preemptive  00000000:00000000 03a99928 0     MTA (Threadpool Completion Port) System.OutOfMemoryException 016c2f2c
  16   10 1c360 03a7e7c0   a029220 Preemptive  00000000:00000000 03a99928 0     MTA (Threadpool Completion Port) System.OutOfMemoryException 016bc434
  17   11 240ac 03a815f0   a029220 Preemptive  00000000:00000000 03a99928 0     MTA (Threadpool Completion Port) System.OutOfMemoryException 016bb198
  18   12 250fc 03a8fcd0     21220 Preemptive  00000000:00000000 0038a7f0 0     Ukn 
  19   13 30f1c 03ab4fb0   102a220 Preemptive  00000000:00000000 0038a7f0 0     MTA (Threadpool Worker) 
  20   14 1a034 03ae9210   202b020 Preemptive  0F625BB8:00000000 03a99928 0     MTA 
  21   15 1f3bc 03ae49b8   202b220 Preemptive  00000000:00000000 03a99928 1     MTA 
  22   16 f8d8 03aba8c8   202b020 Preemptive  00000000:00000000 03a99928 0     MTA 
  23   17 32808 03b10118   a029220 Preemptive  00000000:00000000 03a99928 0     MTA (Threadpool Completion Port) System.OutOfMemoryException 016bb760
  24   18 2ee1c 03b0fbd0   a029220 Preemptive  00000000:00000000 03a99928 0     MTA (Threadpool Completion Port) System.OutOfMemoryException 016bc268
  25   19 539c 03b0ebf8   a029220 Preemptive  00000000:00000000 03a99928 0     MTA (Threadpool Completion Port) System.OutOfMemoryException 016c6288
  26   20 31be8 03b0f140   202b220 Preemptive  00000000:00000000 03a99928 1     MTA 
  27   21 2e884 03b10660   202b220 Preemptive  00000000:00000000 03a99928 1     MTA 
  28   22 10934 03b0f688   202b220 Preemptive  00000000:00000000 03a99928 1     MTA

对我而言，它看起来像一个僵局，消费者停止处理数据进入套接字，但这只是一个模糊的理论。

你对此有什么想法吗？

Answer 1

你提到了x86。由于旧的决定，x86 .NET应用程序仅限于使用用户模式虚拟地址空间的2 GiB RAM： https://msdn.microsoft.com/en-us/library/windows/desktop/aa366778.aspx#memory_limits

使用IMAGE_FILE_LARGE_ADDRESS_AWARE

可以将限制增加到3甚至4 GiB

还有其他的.NET内存管理怪癖和衡量你应该注意的事项：

完成端口线程

1 个答案: