blocks|key|231357|text|为什么不像使用工具一样使用bug呢？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|231358|http://connect.microsoft.com/VisualStudio/feedback/details/521147/large-object-heap-fragmentation-causes-outofmemoryexception|offset|length|231359|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|3H|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

Why not using a bug like a tool?

<a href="http://connect.microsoft.com/VisualStudio/feedback/details/521147/large-object-heap-fragmentation-causes-outofmemoryexception" rel="nofollow">http://connect.microsoft.com/VisualStudio/feedback/details/521147/large-object-heap-fragmentation-causes-outofmemoryexception</a>

blocks|key|231367|text|要监视垃圾收集器的活动和进程内存使用情况，可以使用windows性能计数器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|231368|要填充内存，为什么不从c#程序中分配一个相当大的数组呢？|231369|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

To monitor the activity of your garbage collector and your processes memory usage you can use windows performance counters.

To fill your RAM why not allocate a rather large array from a c# program?

blocks|key|104075|text|您可以使用虚拟机(VPC、VMWare或Virtual+)并调整内存。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|104076|这比一个bug更可靠。|104077|编辑|offset|length|style|BOLD|104078|这个建议是一种模拟物理内存较少的PC的方法。正如注释和其他答案中所述，如果您想要调低虚拟内存，进程开始时的堆将是一个解决方案。|104079|entityMap^0|0|0|0|2|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|P|8|@$F|Q|G|R|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|M|$]]

You could use a Virtual Machine (VPC, VMWare or Virtual Box) and tune the memory down.

That is more reliable than a bug.

EDIT

This suggestion is a way of simulating a PC with less physical memory. As stated in comments and in other answers, if you are looking to tune down virtual memory 'eating away' the heap at the start of the process would be a solution.

blocks|key|231416|text|您可以：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|231417|让Windows假装内存更少。|offset|length|231418|使用AppVerifier+(这里只提到了完整性，只对非托管代码起作用)|231419|或者，如果你只想看看，只要监视收集器。|231420|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/windows/hardware/ff542290%2528v=vs.85%2529.aspx|1|http://www.microsoft.com/download/en/details.aspx?id=20028|2|http://msdn.microsoft.com/en-us/magazine/bb985011.aspx^0|0|0|E|0|0|0|10|1|0|D|5|2|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|W|8|@]|9|@$D|X|E|Y|1|Z]]|A|$]]|$1|F|3|G|5|6|7|10|8|@]|9|@$D|11|E|12|1|13]]|A|$]]|$1|H|3|I|5|6|7|14|8|@]|9|@$D|15|E|16|1|17]]|A|$]]|$1|J|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]|R|$5|M|N|O|A|$P|S]]|T|$5|M|N|O|A|$P|U]]]]

You can:

<a href="http://msdn.microsoft.com/en-us/library/windows/hardware/ff542290%28v=vs.85%29.aspx" rel="nofollow">Make Windows pretend it has less memory</a>.

<a href="http://www.microsoft.com/download/en/details.aspx?id=20028" rel="nofollow">Use AppVerifier (only mentioned here for completeness, only works for unmanaged code)</a>

Or, if you just want to look, just <a href="http://msdn.microsoft.com/en-us/magazine/bb985011.aspx" rel="nofollow">monitor the collector</a>.

blocks|key|103579|text|在像Windows这样的虚拟内存操作系统上，您拥有的RAM数量与此无关。没有足够的时间只会减慢程序的速度。重要的是虚拟内存地址空间的大小，32位操作系统上的2G字节。如果您有64位操作系统，则将EXE项目上的目标平台设置为x86。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|103580|您可以通过在程序开始时调用Marshal.AllocHGlobal()来任意增加内存压力。分配一大块，比如说，500兆字节。没有更多，这将很容易失败。通过分配90+MB块获取更多信息。|103581|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

The amount of RAM you have is not relevant on a virtual memory operating system like Windows. Not having enough only slows down the program. What matters is the size of the virtual memory address space, 2 gigabytes on a 32-bit operating system. Set the target platform on your EXE project to x86 if you have a 64-bit operating system.

You can arbitrary increase memory pressure by calling Marshal.AllocHGlobal() at the start of your program. Allocate a chunk of, say, 500 megabytes. Not more, that will fail easily. Grab more by allocating 90 MB chunks.

blocks|key|2055490|text|您可以使用一个简单的C程序在堆上分配或尝试分配任意数量的内存：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2055491|#include+<stdio.h>
#include+<stdlib.h>

#define+MB+(1024*1024)
#define+DEFAULT_ALLOC+((size_t)+(512*MB));

int+main(int+argc,+char+*argv[])+{
++++char+buffer[2];
++++char+*chunk;
++++char+*endp;
++++size_t+howmuch;

++++if+(+argc+<+2+)+{
++++++++howmuch+=+DEFAULT_ALLOC;
++++}
++++else+{
++++++++howmuch+=+strtoul(argv[1],+&endp,+10);
++++++++if+(+*endp+)+{
++++++++++++fputs("Failed+to+parse+command+line+argument",+stderr);
++++++++++++howmuch+=+DEFAULT_ALLOC;
++++++++}
++++++++else+{
++++++++++++howmuch+*=+MB;
++++++++}
++++}

++++chunk+=+calloc(howmuch,+1);

++++if+(+chunk+==+NULL+)+{
++++++++fputs("Memory+allocation+error",+stderr);
++++++++exit(EXIT_FAILURE);
++++}

++++puts("Memory+allocated.\nPress+ENTER+to+terminate+program");

++++fgets(buffer,+2,+stdin);

++++return+EXIT_SUCCESS;
}|code-block|syntax|javascript|2055492|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can use a simple C program to allocate or try to allocate arbitrary amounts of memory on the heap:

<pre><code>#include &lt;stdio.h&gt;
#include &lt;stdlib.h&gt;

#define MB (1024*1024)
#define DEFAULT_ALLOC ((size_t) (512*MB));

int main(int argc, char *argv[]) {
 char buffer[2];
 char *chunk;
 char *endp;
 size_t howmuch;

 if ( argc &lt; 2 ) {
 howmuch = DEFAULT_ALLOC;
 }
 else {
 howmuch = strtoul(argv[1], &amp;endp, 10);
 if ( *endp ) {
 fputs("Failed to parse command line argument", stderr);
 howmuch = DEFAULT_ALLOC;
 }
 else {
 howmuch *= MB;
 }
 }

 chunk = calloc(howmuch, 1);

 if ( chunk == NULL ) {
 fputs("Memory allocation error", stderr);
 exit(EXIT_FAILURE);
 }

 puts("Memory allocated.\nPress ENTER to terminate program");

 fgets(buffer, 2, stdin);

 return EXIT_SUCCESS;
}
</code></pre>

blocks|key|231495|text|不是一个答案，而是我在代码项目-内存分配工具找到的一个很酷的实用程序|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|231496|Introduction|style|BOLD|231497|有时，在极端情况下测试应用程序非常有用，如|231498|低资源、全硬盘或低内存条件。|231499|这个工具只覆盖了最后一个内存。|231500|它允许您分配尽可能多的可用内存。|231501|​|231502|📷|atomic|231503|231504|entityMap|0|LINK|mutability|MUTABLE|url|http://www.codeproject.com/KB/cpp/alloc.aspx|1|IMAGE|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/7a7579984f5a67669f273d59fbcf14a3.png|imageAlt^0|B|B|0|0|0|C|0|0|0|0|0|0|0|1|1|0|0^^$0|@$1|2|3|4|5|6|7|19|8|@]|9|@$A|1A|B|1B|1|1C]]|C|$]]|$1|D|3|E|5|6|7|1D|8|@$A|1E|B|1F|F|G]]|9|@]|C|$]]|$1|H|3|I|5|6|7|1G|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|1H|8|@]|9|@]|C|$]]|$1|L|3|M|5|6|7|1I|8|@]|9|@]|C|$]]|$1|N|3|O|5|6|7|1J|8|@]|9|@]|C|$]]|$1|P|3|Q|5|6|7|1K|8|@]|9|@]|C|$]]|$1|R|3|S|5|T|7|1L|8|@]|9|@$A|1M|B|1N|1|1O]]|C|$]]|$1|U|3|Q|5|6|7|1P|8|@]|9|@]|C|$]]|$1|V|3|-4|5|6|7|1Q|8|@]|9|@]|C|$]]]|W|$X|$5|Y|Z|10|C|$11|12]]|13|$5|14|Z|15|C|$16|17|18|-4]]]]

Not an answer, but a very cool utility I found at <a href="http://www.codeproject.com/KB/cpp/alloc.aspx" rel="nofollow noreferrer">The Code Project - Memory Allocation Tool</a>
Introduction
Sometimes it is very helpful to test your applications in extreme situations like 
low resources, full hard disk, or low memory conditions.
This tool covers just the last - memory. 
It allows you to allocate as much memory as might be available.
<img src="https://i.stack.imgur.com/pxacj.png" alt="Memory Allocation Tool" />

blocks|key|103616|text|这是一个非常简单的程序，我们用它来测试linux服务器上的低内存条件。我从来没有在windows上编译过它，但是它应该能工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|103617|https://github.com/julman99/eatmemory|offset|length|103618|我希望它对你有用|103619|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|11|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@$D|Q|E|R|1|S]]|A|$]]|$1|F|3|G|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|U|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|C]]]]

This is a very simple program that we use to test low memory conditions on our linux servers. I have never compiled it on windows, but it should work.

<a href="https://github.com/julman99/eatmemory" rel="nofollow">https://github.com/julman99/eatmemory</a>

I Hope it works for you

blocks|key|2055547|text|找到现在为FreeWare：http://www.soft.tahionic.com/download-memalloc/的实用程序|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2055548|entityMap|0|LINK|mutability|MUTABLE|url|http://www.soft.tahionic.com/download-memalloc/^0|E|1B|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Found this utility that is now FreeWare: <a href="http://www.soft.tahionic.com/download-memalloc/" rel="nofollow">http://www.soft.tahionic.com/download-memalloc/</a>

I have an application written in C# that works well, but occasionally in the field gives errors which we believe are due to low memory conditions, or interactions with the garbage collector.

If anyone is interested, it is described here: 
<a href="http://groups.google.com/group/nhusers/browse_thread/thread/649f518c3fbbde53/153d1ec3c9c7c78b?lnk=raot" rel="noreferrer">Unable to cast object of type 'NHibernate.Impl.ExpandedQueryExpression' to type 'NHibernate.Linq.NhLinqExpression'</a>

I want to try and reproduce this for debugging, but my development machine has too much memory.

I've removed the pagefile so my virtual memory is limited to the 12GBs of physical memory so aside from physically removing ram, does anyone have any suggestions on how to simulate a low memory condition in a development environment? 

EDIT: 
Removed asking about tools which monitor the garbage collector?

How can I simulate a low memory condition in Windows 7

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个用C#编写的应用程序，运行良好，但有时在字段中会出现错误，我们认为这些错误是由于内存条件低或与垃圾收集器的交互造成的。如果有人感兴趣，请在此介绍：我想尝试复制这个以进行调试，但是我的开发机器内存太多了。我已经删除了页面文件，所以我的虚拟内存仅限于物理内存的12 in，所以除了物理删除ram之外，还有人对如何在开...

问如何在Windows 7中模拟低内存状态
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