6、.NET 4.0 實踐 2020-12-14 內存過高

Microsoft (R) Windows Debugger Version 10.0.10240.9 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.


Loading Dump File [E:\Sx\Procdumpfiles\shop\w3wp.exe_201214_133648.dmp]
User Mini Dump File with Full Memory: Only application data is available

Comment: '
*** procdump  -ma -c 1 -s 2 -n 2 433292 E:\Sx\Procdumpfiles\shop
*** Process exceeded 1% CPU (system scale) for 2 seconds. Value: 1%. Hottest Thread: 476812 (0x7468c).'

************* Symbol Path validation summary **************
Response                         Time (ms)     Location
Deferred                                       srv*E:\Soft\Debug\Windbg\LocalSymbols*https://msdl.microsoft.com/download/symbols
Symbol search path is: srv*E:\Soft\Debug\Windbg\LocalSymbols*https://msdl.microsoft.com/download/symbols
Executable search path is: 
Windows 8 Version 9200 MP (24 procs) Free x64
Product: Server, suite: TerminalServer SingleUserTS
Machine Name:
Debug session time: Mon Dec 14 13:36:51.000 2020 (UTC + 8:00)
System Uptime: 19 days 19:22:39.734
Process Uptime: 1 days 4:51:43.000
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No .natvis files found at C:\Program Files\Windows Kits\10\Debuggers\x64\Visualizers.
This dump file has an exception of interest stored in it.
The stored exception information can be accessed via .ecxr.
(69c8c.7468c): Wake debugger - code 80000007 (first/second chance not available)
ntdll!NtWaitForSingleObject+0xa:
00007ffa`778006fa c3              ret
0:125> .load C:\Windows\Microsoft.NET\Framework64\v4.0.30319\SOS.DLL
0:125> !dumpheap -stat
Statistics:
              MT    Count    TotalSize Class Name

00007ffa6c6b2238   441185     10588440 System.Int32
00007ffa6b778548   110467     11488568 System.Text.RegularExpressions.Match
00007ffa65aa1ee8     3508     14452960 System.Web.Caching.UsageEntry[]
00007ffa612fd510    13012     16967648 System.Data.RBTree`1+Node[[System.Data.DataRow, System.Data]][]
00007ffa0e42e520   105805     17775240 NeedIndex.Bmlink.Solr.SolrSupplyInfo
00007ffa0e459268   386733     24750912 NeedIndex.Entity.ShopNews
00007ffa6c6b5140   176646     30239007 System.Byte[]
00007ffa6c6b21d8   417163     30364928 System.Int32[]
00007ffa6c6b0948   109842     31782926 System.Char[]
00007ffa6c6b5b38    19351     33521568 System.Collections.Hashtable+bucket[]
00007ffa65aa1a10   439417     45699368 System.Web.Caching.CacheEntry
00007ffa6c6431c0   808115     80776704 System.Object[]
00007ffa6c6af6c0  3921516    476305244 System.String
000000e9c0019c70    91540    634703458      Free
Total 10362932 objects
0:125> !dumpheap -mt 00007ffa6c6af6c0 -min 2000
         Address               MT     Size
000000e9c2771300 00007ffa6c6af6c0     8650     
000000ea05aba4e0 00007ffa6c6af6c0    14516     
000000ea05acd4a8 00007ffa6c6af6c0    12752     
000000ea05ad3078 00007ffa6c6af6c0    12728     
000000ea05ad6230 00007ffa6c6af6c0    12298     
000000ea05afc230 00007ffa6c6af6c0    12562     
    
000000f0026a0c28 00007ffa6c6af6c0   170184     
Statistics:
              MT    Count    TotalSize Class Name
00007ffa6c6af6c0      762     17676216 System.String
Total 762 objects
0:125> !do 000000f0026a0c28
Name:        System.String
MethodTable: 00007ffa6c6af6c0
EEClass:     00007ffa6bfd4860
Size:        170184(0x298c8) bytes
File:        C:\Windows\Microsoft.Net\assembly\GAC_64\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll
String:      <p style="background:white;">
    <span style="font-size:18px;"> </span> 
</p>
<p>
    <span style="font-size:18px;"><strong> </strong></span> 
</p>
<p class="MsoNormal" style="background-color:#FFFFFF;">
    <strong><span style="font-size:18px;"><strong> </strong></span></strong> 
</p>
<p class="MsoNormal" style="font-size:14px;background-color:#FFFFFF;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;">
    <span style="background-color:#FFE500;font-size:16px;"><span style="background-color:#FFFFFF;"><strong></strong></span><span style="background-color:#FFFFFF;"><strong>400AYOTO300EW 300A柴油發電電焊機三相發電機</strong></span><span style="background-color:#FFFFFF;"><strong>，<span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"><strong></strong></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"><strong>400AYOTO300EW 300A柴油發電電焊機三相發電機</strong></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"><strong></strong></span> &nbsp;</strong><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;">超靜音柴油發電機，並具有如下長處：外形美觀，構造緊湊，容量大，便利機組作爲活動式運用；因爲選用高強度的箱體和尺度規範化的規劃，大大節省用戶的運輸本錢；靜音型箱體內部安置有高功用耐老化阻燃型隔音資料和吸音資料；一起箱體規劃更趨人性化，箱體外兩邊均設有側門，在內設檢修燈等便利用戶操作和檢修設備；操控體系屏和輸出接駁辦法,燃油箱,消音等有很多獨特的規劃的地方，倍受用戶喜愛。柴油發電機組選用雙槓四衝程技能製造而成，有雙槓開架便攜式，移動手推便利，或雙槓靜音風冷款、四缸水冷靜音款，假如你是思考在家裏用，買款配有高檔隔音體系，噪音低，讓您的運用環境愈加環保愜意！機器可配ATS主動切換設備，停電自起、來電自停！能夠無人值守！在柴油機燃油噴發操控範疇裏較爲領先的要數公司的電控高壓共軌技能，不只代表着該範疇的較高技能水平，並且其超卓的穩定性也廣爲業內人士所稱道。</span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"></span></span></span>
</p>
<p class="MsoNormal" style="font-size:14px;background-color:#FFFFFF;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;">
    <span style="background-color:#FFE500;font-size:16px;">日本武藤——綠色世界的力量 &nbsp;</span> 
</p>
<p class="MsoNormal" style="font-size:14px;background-color:#FFFFFF;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;">
    <span style="background-color:#FFE500;font-size:16px;">源自日本高端發電電焊機領導品牌 &nbsp;&nbsp;</span> 
</p>
<p class="MsoNormal" style="font-size:14px;background-color:#FFFFFF;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;">
    <span style="background-color:#FFE500;font-size:16px;">日本品質 &nbsp;出口歐洲</span> 
</p>
<p class="MsoNormal" style="font-size:14px;background-color:#FFFFFF;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;">
    <span style="background-color:#FFE500;font-size:16px;">武藤銷售熱線：13524131245 &nbsp; &nbsp;021-31669261 &nbsp; &nbsp;021-31322447 &nbsp;&nbsp;</span> 
</p>
<p class="MsoNormal" style="font-size:14px;background-color:#FFFFFF;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;">
    <span style="background-color:#FFE500;font-size:16px;">&nbsp;QQ號碼：865819458 微信 jyjhxj520</span><span style="background-color:#FFE500;font-size:16px;"></span> 
</p>
<p class="MsoNormal" style="font-size:14px;background-color:#FFFFFF;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;">
    <span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"><strong></strong></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"><strong>400AYOTO300EW 300A柴油發電電焊機三相發電機</strong></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"><strong>，<strong></strong><strong>400AYOTO300EW 300A柴油發電電焊機三相發電機 &nbsp;</strong></strong>&nbsp;<span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;">柴油發電機的發起機長時間運用構成的正常磨損，或因養護不妥構成的非正常磨損，均會使柴油機的缸套構成縱行拉痕，缸徑、活塞側空隙超出規則值，使活塞環的撐力相應減小，呈現刮油不淨景象。或因油環內的內撐歪曲簧斷開在油環的開口方位，致使刮油不淨而參加焚燒，構成機油嚴峻耗費表現，表現爲柴油機起動艱難，排氣管有顯着的藍煙冒出，呼吸器噴油嚴峻。再者，活塞本應向上的一側，在裝置時因方向倒置使焚燒室構成倒置狀況，雖不會影響柴油發電機的起動，但機油的損耗會相當嚴峻，天天油耗在0.5公斤擺佈。</span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"></span></span>
</p>
<p class="MsoNormal" style="font-size:14px;background-color:#FFFFFF;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;">
    <span style="font-size:16px;background-color:#FFE500;">&nbsp;</span><span style="background-color:#FFE500;font-size:16px;line-height:1.5;">日本武藤柴油發電電焊機，汽油發電電焊機</span> 
</p>
<p style="font-size:14px;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;background-color:white;">
    <span style="font-size:16px;">【售後維修】：質保兩年，終生維護</span> 
</p>
<p style="font-size:14px;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;background-color:white;">
    <span style="font-size:16px;">【公司名稱】：上海又田實業有限公司</span> 
</p>
<p style="font-size:14px;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;background-color:white;">
    <span style="font-size:16px;">【產品品牌】：日本武藤</span><span style="font-size:16px;"></span> 
</p>
<p style="font-size:14px;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;background-color:white;">
    <span style="font-size:16px;"><span style="background-color:#FFE500;font-size:16px;"><span style="font-size:16px;">400AYOTO300EW 300A柴油發電電焊機三相發電機</span></span></span> 
</p>
<p style="font-size:14px;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;background-color:white;">
    <span style="font-size:16px;"><span style="background-color:#FFE500;"><span style="font-size:24px;"></span></span></span><span style="font-size:16px;"><span style="background-color:#FFE500;font-size:16px;">日本武藤 MUYOTO140A-800A汽油/柴油發電電焊機</span><span style="background-color:#FFE500;"></span><br />
</span> 
</p>
<p style="font-size:14px;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;background-color:white;">
    <span style="font-size:16px;">特點： &nbsp;*結構緊湊，移動方便 &nbsp;*面板佈局人性化，方便操作 &nbsp;*機油報警裝置，延長髮動機壽命 &nbsp;</span> 
</p>
<p style="font-size:14px;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;background-color:white;">
    <span style="font-size:16px;">*適用於纖維素焊條等各種焊條 &nbsp;*空載電壓高，容易起弧 &nbsp;*極性轉換方便，滿足各種焊接工藝 &nbsp;</span> 
</p>
<p style="font-size:14px;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;background-color:white;">
    <span style="font-size:16px;">*電啓動快速啓動 &nbsp;*配置焊接電流表和電壓表，準確控制焊接工藝 &nbsp;*歐式插座防水、防濺更安全 &nbsp;</span> 
</p>
<p style="font-size:14px;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;background-color:white;">
    <span style="font-size:16px;">*配備標準橡膠四輪，經久耐用 &nbsp;*大功率輔助電適用於各種電動工具，如角磨機、電鑽等&nbsp;<br />
</span> 
</p>
<p style="font-size:14px;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;background-color:white;">
    <span style="font-size:16px;"><span style="background-color:#FFE500;"><span style="font-size:18px;"> </span></span></span> 
</p>
<p style="font-size:14px;color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;background-color:white;">
    <span style="font-size:16px;"><span style="background-color:#FFE500;"><span style="font-size:16px;"><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"><strong></strong></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"><strong>400AYOTO300EW 300A柴油發電電焊機三相發電機</strong></span><span style="color:#444444;font-family:Tahoma, Arial, 宋體, sans-serif;font-size:16px;line-height:24px;background-color:#FFFFFF;"><strong>，<strong></strong><strong>400AYOTO300EW 300A柴油發電電焊機三相發電機</strong><strong></strong></strong></span></span><span style="font-size:24px;"></span></span></span> 
</p>
<span style="font-size:16px;">日本武藤 MUYOTO140A-800A汽油/柴油發電電焊機</span><span style="background-color:#FFE500;"></span>
<table class="MsoNormalTable ke-zeroborder" border="0" cellspacing="0" cellpadding="0" width="413" style="width:310pt;">
    <tbody>
        <tr>
            <td width="413" colspan="2" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">YOTO250EW-</span><span style="font-size:9.0pt;font-family:宋體;color:#333333;">柴油發電電焊機（武藤動力<span>YOTO</span>）<span></span></span>
                </p>
            </td>
        </tr>
        <tr>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">形式<span></span></span>
                </p>
            </td>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">無刷式<span></span></span>
                </p>
            </td>
        </tr>
        <tr>
            <td width="413" colspan="2" style="border:solid #333333 1.0pt;background:yellow;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">電焊機<span></span></span>
                </p>
            </td>
        </tr>
        <tr>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">額定功率</span><span style="font-size:11.0pt;font-family:宋體;color:#333333;">&nbsp;KW</span><span style="font-size:9.0pt;font-family:宋體;color:#333333;"></span>
                </p>
            </td>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">7.9</span>
                </p>
            </td>
        </tr>
        <tr>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">額定電流</span><span style="font-size:11.0pt;font-family:宋體;color:#333333;">&nbsp;DCA</span><span style="font-size:9.0pt;font-family:宋體;color:#333333;"></span>
                </p>
            </td>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">260</span>
                </p>
            </td>
        </tr>
        <tr>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">額定電壓</span><span style="font-size:11.0pt;font-family:宋體;color:#333333;">&nbsp;DCV</span><span style="font-size:9.0pt;font-family:宋體;color:#333333;"></span>
                </p>
            </td>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">30.4</span>
                </p>
            </td>
        </tr>
        <tr>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">空載電壓</span><span style="font-size:11.0pt;font-family:宋體;color:#333333;">&nbsp;DCV</span><span style="font-size:9.0pt;font-family:宋體;color:#333333;"></span>
                </p>
            </td>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">85</span>
                </p>
            </td>
        </tr>
        <tr>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">額定使用率</span><span style="font-size:11.0pt;font-family:宋體;color:#333333;">&nbsp;%</span><span style="font-size:9.0pt;font-family:宋體;color:#333333;"></span>
                </p>
            </td>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">50</span>
                </p>
            </td>
        </tr>
        <tr>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">電流調節範圍</span><span style="font-size:11.0pt;font-family:宋體;color:#333333;">&nbsp;DCA</span><span style="font-size:9.0pt;font-family:宋體;color:#333333;"></span>
                </p>
            </td>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">50-260</span>
                </p>
            </td>
        </tr>
        <tr>
            <td width="413" colspan="2" style="border:solid #333333 1.0pt;background:yellow;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">輔助電源<span></span></span>
                </p>
            </td>
        </tr>
        <tr>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">額定功率</span><span style="font-size:11.0pt;font-family:宋體;color:#333333;">&nbsp;KW</span><span style="font-size:9.0pt;font-family:宋體;color:#333333;"></span>
                </p>
            </td>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">7.0DC</span>
                </p>
            </td>
        </tr>
        <tr>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">額定電壓</span><span style="font-size:11.0pt;font-family:宋體;color:#333333;">&nbsp;V</span><span style="font-size:9.0pt;font-family:宋體;color:#333333;"></span>
                </p>
            </td>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">DC220</span>
                </p>
            </td>
        </tr>
        <tr>
            <td width="413" colspan="2" style="border:solid #333333 1.0pt;background:yellow;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#333333;">發動機<span></span></span>
                </p>
            </td>
        </tr>
        <tr>
            <td width="207" style="border:solid #333333 1.0pt;background:white;">
                <p class="MsoNormal" align="center" style="text-align:center;">
                    <span style="font-size:9.0pt;font-family:宋體;color:#3333
Fields:
              MT    Field   Offset                 Type VT     Attr            Value Name
00007ffa6c6b2238  40000ac        8         System.Int32  1 instance            85079 m_stringLength
00007ffa6c6b09a8  40000ad        c          System.Char  1 instance               3c m_firstChar
00007ffa6c6af6c0  40000ae       18        System.String  0   shared           static Empty
                                 >> Domain:Value  000000e9c10c1b80:NotInit  000000f0352a1220:NotInit  <<
0:125> !gcroot 000000f0026a0c28
Found 0 unique roots (run '!GCRoot -all' to see all roots).