它是一个混合代码程序（C＃，C ++），运行一两天后，内存使用率非常高（1.5G）
当我使用windbg倾倒堆时，我无法理解是什么原因造成的
第一：gc堆大小只有338MB，但RegionUsageIsVAD的内存使用量大约为1G（ps：我不会在我的程序中调用虚拟alloc）;
第二：RegionUsageHeap的内存使用量大约是550MB，然后，我检查本机堆，那里有很多大小为零的虚拟块，我不知道550MB内存来自哪里。 />
转储文件分析如下
0:000> !eeheap -gc
Number of GC Heaps: 1
generation 0 starts at 0x7d138454
generation 1 starts at 0x7d0eb434
generation 2 starts at 0x00e61000
ephemeral segment allocation context: none
segment begin allocated size
00e60000 00e61000 01e4d5c4 0xfec5c4(16696772)
073c0000 073c1000 083a3efc 0xfe2efc(16658172)
............
51e00000 51e01000 51f82b60 0x181b60(1579872)
6b970000 6b971000 6bdd3764 0x462764(4597604)
7d0a0000 7d0a1000 7d32cb00 0x28bb00(2669312)
Large object heap starts at 0x01e61000
segment begin allocated size
01e60000 01e61000 026784d0 0x8174d0(8484048)
58d70000 58d71000 59080ef8 0x30fef8(3211000)
Total Size: Size: 0x142f30c8 (338637000) bytes.
GC Heap Size: Size: 0x142f30c8 (338637000) bytes.
0:000> !address -summary
TEB 7efdd000 in range 7efdb000 7efde000
TEB 7efda000 in range 7efd8000 7efdb000
......
TEB 7eeda000 in range 7eed8000 7eedb000
ProcessParametrs 006613d8 in range 00660000 00760000
Environment 006607f0 in range 00660000 00760000
-------------------- Usage SUMMARY --------------------------
TotSize ( KB) Pct(Tots) Pct(Busy) Usage
3fa15000 ( 1042516) : 49.71% 57.71% : RegionUsageIsVAD
11bf1000 ( 290756) : 13.86% 00.00% : RegionUsageFree
961e000 ( 153720) : 07.33% 08.51% : RegionUsageImage
30fe000 ( 50168) : 02.39% 02.78% : RegionUsageStack
0 ( 0) : 00.00% 00.00% : RegionUsageTeb
222cd000 ( 559924) : 26.70% 31.00% : RegionUsageHeap
0 ( 0) : 00.00% 00.00% : RegionUsagePageHeap
1000 ( 4) : 00.00% 00.00% : RegionUsagePeb
0 ( 0) : 00.00% 00.00% : RegionUsageProcessParametrs
0 ( 0) : 00.00% 00.00% : RegionUsageEnvironmentBlock
Tot: 7fff0000 (2097088 KB) Busy: 6e3ff000 (1806332 KB)
-------------------- Type SUMMARY --------------------------
TotSize ( KB) Pct(Tots) Usage
11bf1000 ( 290756) : 13.86% : <free>
9edc000 ( 162672) : 07.76% : MEM_IMAGE
12d5000 ( 19284) : 00.92% : MEM_MAPPED
6324e000 ( 1624376) : 77.46% : MEM_PRIVATE
-------------------- State SUMMARY --------------------------
TotSize ( KB) Pct(Tots) Usage
60c4b000 ( 1585452) : 75.60% : MEM_COMMIT
11bf1000 ( 290756) : 13.86% : MEM_FREE
d7b4000 ( 220880) : 10.53% : MEM_RESERVE
Largest free region: Base 64d78000 - Size 02008000 (32800 KB)
0:000> !heap -s
LFH Key : 0x5733fdc1
Termination on corruption : DISABLED
Heap Flags Reserv Commit Virt Free List UCR Virt Lock Fast
(k) (k) (k) (k) length blocks cont. heap
Virtual block: 08f80000 - 08f80000 (size 00000000)
Virtual block: 08700000 - 08700000 (size 00000000)
Virtual block: 0f480000 - 0f480000 (size 00000000)
00660000 00000002 8192 6984 8192 156 224 4 3 0 LFH
008a0000 00001002 1088 300 1088 17 5 2 0 0 LFH
009f0000 00041002 256 4 256 2 1 1 0 0
00490000 00001002 1088 300 1088 14 5 2 0 0 LFH
00820000 00001002 1088 300 1088 17 5 2 0 0 LFH
00280000 00041002 256 16 256 4 1 1 0 0
00630000 00001002 1088 484 1088 6 14 2 0 0 LFH
007c0000 00041002 1280 284 1280 1 7 2 0 0 LFH
00930000 00041002 1280 388 1280 5 48 2 0 0 LFH
03ab0000 00001002 256 20 256 3 1 1 0 0
Virtual block: 173c0000 - 173c0000 (size 00000000)
Virtual block: 17650000 - 17650000 (size 00000000)
Virtual block: 17860000 - 17860000 (size 00000000)
...............
Virtual block: 48f00000 - 48f00000 (size 00000000)
071b0000 00001002 120672 109376 120672 499 201 12 370 0 LFH
08d30000 00001002 64000 13140 64000 11062 143 46 0 0 LFH
External fragmentation 84 % (143 free blocks)
0fde0000 00001002 256 4 256 1 2 1 0 0