混淆DebugDiag报告以识别高内存使用情况

时间:2015-06-01 09:57:53

标签: wcf windbg debugdiag

最近我收到了一批新的转储来识别我们的3个WCF服务中的HighMemory使用情况。它们托管在64位AppPool和Windows Server 2012上。

  1. 申请一:
    处理时间:22天
    GC堆使用量:2.69 Gb
    装载模块:220 Mb
    Commited Memory:3.08 Gb
    本机记忆:2 Gb
  2. 标识为大型GC堆使用的问题是由于未关闭的WCF客户端代理对象造成的。其中几乎占2.26 Gb,并且在GC堆中缓存。

    1. 申请二:
      处理时间:9小时
      GC堆使用量:4.43 Gb
      缓存大小:2.45 Gb
      装载模块:224 Mb
      通勤记忆:5.13 Gb
      本机内存堆:2 Gb
    2. 标识为大多数对象的问题属于System.Web.CaheEntry,因为它们是由于缓存大。 2.2 Gc堆上的Gb String对象具有CacheRef根对象的根。

      1. 申请三:
        缓存大小:950 Mb
        GC堆:1.2 Gb
        原生堆:2 Gb
      2. 我们最近升级到Windows Server 2012,我也有旧转储。这些转储不显示同一应用程序的本机堆。它只有大约90 Mb。

        我还使用WinDbg使用!heap -s命令探索本机堆。 它显示了非常小的本机堆大小,如下所示。

        我很困惑为什么DebugDiag 2.0在每个WCF服务中显示2Gb的Native Heap。我的理解是!heap -s还应该转储相同的本地堆,它应该与调试诊断报告图匹配。报告还显示了Thoushand of TBytes的值。

        0:000> !heap -s
        LFH Key                   : 0x53144a890e31e98b
        Termination on corruption : ENABLED
                  Heap     Flags   Reserv  Commit  Virt   Free  List   UCR  Virt  Lock  Fast 
                                    (k)     (k)    (k)     (k) length      blocks cont. heap 
        -------------------------------------------------------------------------------------
        000000fc42c10000 00000002   32656  31260  32552   2885   497     6    2      f   LFH
        000000fc42a40000 00008000      64      4     64      2     1     1    0      0      
        000000fc42bf0000 00001002    3228   1612   3124     43     9     3    0      0   LFH
        000000fc43400000 00001002    1184     76   1080      1     5     2    0      0   LFH
        000000fc43390000 00001002    1184    148   1080     41     7     2    0      0   LFH
        000000fc43d80000 00001002      60      8     60      5     1     1    0      0      
        000000fc433f0000 00001002      60      8     60      5     1     1    0      0      
        000000fc442a0000 00001002    1184    196   1080      1     6     2    0      0   LFH
        000000fc44470000 00041002      60      8     60      5     1     1    0      0      
        000001008e9f0000 00041002     164     40     60      3     1     1    0      0   LFH
        000001008f450000 00001002    3124   1076   3124   1073     3     3    0      0      
            External fragmentation  99 % (3 free blocks)
        -------------------------------------------------------------------------------------
        

        Debug DiagReport Native Heap

        DebugDiag Report of Native Heap

        任何人都可以解释为什么WinDbg命令!heap -s和DebugDiag报告是变化的。或者我对上述命令的认识不正确。

        我还使用Pykd脚本来转储本机对象统计信息。其中没有显示太多的对象。

        外部碎片99%(3个空闲块)的意思是什么 在上面的输出。据我所知,碎片化内存具有较小的连续内存块。但未将其与百分比联系起来。

        编辑1: 申请2:

        0:000> !address -summary
        
        
        Mapping file section regions...
        Mapping module regions...
        Mapping PEB regions...
        Mapping TEB and stack regions...
        Mapping heap regions...
        Mapping page heap regions...
        Mapping other regions...
        Mapping stack trace database regions...
        Mapping activation context regions...
        
        --- Usage Summary ---------------- RgnCount ----------- Total Size -------- %ofBusy %ofTotal
        Free                                    363     7ffb`04a14000 ( 127.981 Tb)           99.98%
        <unknown>                               952        4`e8c0c000 (  19.637 Gb)  98.54%    0.01%
        Image                                  2122        0`0e08d000 ( 224.551 Mb)   1.10%    0.00%
        Heap                                     88        0`03372000 (  51.445 Mb)   0.25%    0.00%
        Stack                                   124        0`013c0000 (  19.750 Mb)   0.10%    0.00%
        Other                                     7        0`001be000 (   1.742 Mb)   0.01%    0.00%
        TEB                                      41        0`00052000 ( 328.000 kb)   0.00%    0.00%
        PEB                                       1        0`00001000 (   4.000 kb)   0.00%    0.00%
        
        --- Type Summary (for busy) ------ RgnCount ----------- Total Size -------- %ofBusy %ofTotal
        MEM_PRIVATE                             643        4`ebf44000 (  19.687 Gb)  98.79%    0.02%
        MEM_IMAGE                              2655        0`0eb96000 ( 235.586 Mb)   1.15%    0.00%
        MEM_MAPPED                               37        0`00b02000 (  11.008 Mb)   0.05%    0.00%
        
        --- State Summary ---------------- RgnCount ----------- Total Size -------- %ofBusy %ofTotal
        MEM_FREE                                363     7ffb`04a14000 ( 127.981 Tb)           99.98%
        MEM_RESERVE                             725        3`b300d000 (  14.797 Gb)  74.25%    0.01%
        MEM_COMMIT                             2610        1`485cf000 (   5.131 Gb)  25.75%    0.00%
        
        --- Protect Summary (for commit) - RgnCount ----------- Total Size -------- %ofBusy %ofTotal
        PAGE_READWRITE                          868        1`3939d000 (   4.894 Gb)  24.56%    0.00%
        PAGE_EXECUTE_READ                       157        0`09f10000 ( 159.063 Mb)   0.78%    0.00%
        PAGE_READONLY                           890        0`035ed000 (  53.926 Mb)   0.26%    0.00%
        PAGE_WRITECOPY                          433        0`0149c000 (  20.609 Mb)   0.10%    0.00%
        PAGE_EXECUTE_READWRITE                  148        0`0065d000 (   6.363 Mb)   0.03%    0.00%
        PAGE_EXECUTE_WRITECOPY                   67        0`0017c000 (   1.484 Mb)   0.01%    0.00%
        PAGE_READWRITE|PAGE_GUARD                41        0`000b9000 ( 740.000 kb)   0.00%    0.00%
        PAGE_NOACCESS                             4        0`00004000 (  16.000 kb)   0.00%    0.00%
        PAGE_EXECUTE                              2        0`00003000 (  12.000 kb)   0.00%    0.00%
        
        --- Largest Region by Usage ----------- Base Address -------- Region Size ----------
        Free                                    101`070a0000     7ef6`e77b2000 ( 126.964 Tb)
        <unknown>                                fd`72f14000        0`d156c000 (   3.271 Gb)
        Image                                  7ff9`91344000        0`012e8000 (  18.906 Mb)
        Heap                                    100`928a0000        0`00544000 (   5.266 Mb)
        Stack                                    fc`43240000        0`0007b000 ( 492.000 kb)
        Other                                    fc`42ea0000        0`00181000 (   1.504 Mb)
        TEB                                    7ff7`ee852000        0`00002000 (   8.000 kb)
        PEB                                    7ff7`eeaaf000        0`00001000 (   4.000 kb)
        

        申请三:

        0:000> !address -summary
        
        --- Usage Summary ---------------- RgnCount ----------- Total Size -------- %ofBusy %ofTotal
        Free                                    323     7ffb`9f8ea000 ( 127.983 Tb)           99.99%
        <unknown>                               832        4`4bbb6000 (  17.183 Gb)  98.15%    0.01%
        Image                                  2057        0`0e5ab000 ( 229.668 Mb)   1.28%    0.00%
        Heap                                    196        0`04f52000 (  79.320 Mb)   0.44%    0.00%
        Stack                                   127        0`01440000 (  20.250 Mb)   0.11%    0.00%
        Other                                     7        0`001be000 (   1.742 Mb)   0.01%    0.00%
        TEB                                      42        0`00054000 ( 336.000 kb)   0.00%    0.00%
        PEB                                       1        0`00001000 (   4.000 kb)   0.00%    0.00%
        
        --- Type Summary (for busy) ------ RgnCount ----------- Total Size -------- %ofBusy %ofTotal
        MEM_PRIVATE                             783        4`51099000 (  17.266 Gb)  98.63%    0.01%
        MEM_IMAGE                              2444        0`0ec06000 ( 236.023 Mb)   1.32%    0.00%
        MEM_MAPPED                               35        0`00a67000 (  10.402 Mb)   0.06%    0.00%
        
        --- State Summary ---------------- RgnCount ----------- Total Size -------- %ofBusy %ofTotal
        MEM_FREE                                323     7ffb`9f8ea000 ( 127.983 Tb)           99.99%
        MEM_RESERVE                             621        3`e3504000 (  15.552 Gb)  88.83%    0.01%
        MEM_COMMIT                             2641        0`7d202000 (   1.955 Gb)  11.17%    0.00%
        
        --- Protect Summary (for commit) - RgnCount ----------- Total Size -------- %ofBusy %ofTotal
        PAGE_READWRITE                          919        0`6dc07000 (   1.715 Gb)   9.80%    0.00%
        PAGE_EXECUTE_READ                       153        0`0a545000 ( 165.270 Mb)   0.92%    0.00%
        PAGE_READONLY                           734        0`02cf5000 (  44.957 Mb)   0.25%    0.00%
        PAGE_WRITECOPY                          470        0`01767000 (  23.402 Mb)   0.13%    0.00%
        PAGE_EXECUTE_READWRITE                  240        0`009cf000 (   9.809 Mb)   0.05%    0.00%
        PAGE_EXECUTE_WRITECOPY                   76        0`001c5000 (   1.770 Mb)   0.01%    0.00%
        PAGE_READWRITE|PAGE_GUARD                42        0`000be000 ( 760.000 kb)   0.00%    0.00%
        PAGE_NOACCESS                             5        0`00005000 (  20.000 kb)   0.00%    0.00%
        PAGE_EXECUTE                              2        0`00003000 (  12.000 kb)   0.00%    0.00%
        
        --- Largest Region by Usage ----------- Base Address -------- Region Size ----------
        Free                                     52`892e0000     7fa5`65548000 ( 127.646 Tb)
        <unknown>                                4f`4ec81000        0`e9c3f000 (   3.653 Gb)
        Image                                  7ff9`91344000        0`012e8000 (  18.906 Mb)
        Heap                                     52`8833b000        0`00fa4000 (  15.641 Mb)
        Stack                                    4e`37a70000        0`0007b000 ( 492.000 kb)
        Other                                    4e`37720000        0`00181000 (   1.504 Mb)
        TEB                                    7ff7`ee828000        0`00002000 (   8.000 kb)
        PEB                                    7ff7`eea43000        0`00001000 (   4.000 kb)
        

0 个答案:

没有答案