windows “系统资源不足...”错误是什么意思？
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What does "Insufficient system resources..." error mean?
提问by Pyrolistical
This question spans both serverfault and stackoverflow so I just picked this one.
这个问题涉及 serverfault 和 stackoverflow，所以我选择了这个。
I get the following exception with some simple file copy code. Its running on Windows Server 2003 x64
我通过一些简单的文件复制代码得到以下异常。它在 Windows Server 2003 x64 上运行
Caused by: java.io.IOException: Insufficient system resources exist to complete the requested service
at sun.nio.ch.FileDispatcher.pwrite0(Native Method)
at sun.nio.ch.FileDispatcher.pwrite(Unknown Source)
at sun.nio.ch.IOUtil.writeFromNativeBuffer(Unknown Source)
at sun.nio.ch.IOUtil.write(Unknown Source)
at sun.nio.ch.FileChannelImpl.write(Unknown Source)
at sun.nio.ch.FileChannelImpl.transferFromFileChannel(Unknown Source)
at sun.nio.ch.FileChannelImpl.transferFrom(Unknown Source)
at Tools.copy(Tools.java:473)
public static void copy(FileChannel input, FileChannel output) throws IOException {
final long size = input.size();
long pos = 0;
while (pos < size) {
final long count = (size - pos) > FIFTY_MB ? FIFTY_MB : (size - pos);
pos += output.transferFrom(input, pos, count);
}
}
The thing is the server that is running this code is brand new and super powerful, so I don't understand what system resource it could possibly be running out of.
问题是运行此代码的服务器是全新且超级强大的，所以我不明白它可能耗尽了哪些系统资源。
This looks like the error described here: http://support.microsoft.com/kb/304101
这看起来像这里描述的错误：http: //support.microsoft.com/kb/304101
But I've tried adding the registry edits to increase kernel memory page size, and that didn't help.
但是我尝试添加注册表编辑以增加内核内存页面大小，但这没有帮助。
What I really don't get is I've seen code that uses FileChanneltransferFromwith a lot larger chunks of 50 MB. I've seen that code work for files well over 1 GB in one chunk. But the file the server is getting stuck on is just 32 MB!
我真正不明白的是，我见过使用FileChanneltransferFrom50 MB 大得多的块的代码。我已经看到该代码可以在一个块中处理超过 1 GB 的文件。但是服务器卡住的文件只有 32 MB！
What is going on here? Is this a problem with FileChannelor Windows?
这里发生了什么？这是FileChannelWindows 或 Windows的问题吗？
回答by polygenelubricants
It may be related to "Bug" ID 4938442: Insufficient System Resources When Copying Large Files with NIO FileChannels.
这可能与“Bug” ID 4938442：Insufficient System Resources When Copying Large Files with NIO FileChannels 有关。
Evaluation: Not a bug. This is most likely a file-server (or possibly client) configuration issue.
CUSTOMER SUBMITTED WORKAROUND :
Don't use NIO; we'd prefer to avoid this workaround since NIO offers a significant performance boost for large files (at least when performing local disk-to-local disk copies)
We can transfer using a smaller number of bytes. The actual number of bytes that may be copied without encountering this error seems to differ on Windows XP and Windows 2000 server. Certainly a value of 32Mb appears to work.
评价：不是bug。这很可能是文件服务器（或可能是客户端）配置问题。
客户提交的解决方法：
不要使用蔚来；我们更愿意避免这种解决方法，因为 NIO 为大文件提供了显着的性能提升（至少在执行本地磁盘到本地磁盘复制时）
我们可以使用较少的字节数进行传输。在 Windows XP 和 Windows 2000 服务器上，可复制而不会遇到此错误的实际字节数似乎有所不同。当然，32Mb 的值似乎有效。
