使用 xperf 获取符号
我通读了文档并使用了概述的命令，但由于某种原因，我似乎没有得到任何符号，只是摘要表的功能列中的一系列“未知数”，除了我正在尝试的应用程序的最顶层集合之外的所有内容调试....我将环境变量设置为微软服务器和包含应用程序的pdb的目录。 我还确保在显示汇总表之前选择“加载符号”项。
根据我正在阅读的信息，在加载符号时，表格应该需要一些时间才能显示，但是对我来说，表格几乎立即显示，并且只有 sprite.exe->sprite.exe 中最上面的项目具有函数名称，函数的其他行要么是空白，要么是“未知”，
我使用的是 Vista SP1。
这是我使用的批处理文件。 我是否做了任何会阻止加载符号的事情？
REM start profiler
xperf -on PROC_THREAD+LOADER+INTERRUPT+DPC+PROFILE^
-stackwalk profile -minbuffers 16 -maxbuffers 1024 -flushtimer 0^
-f tmp.etl
REM run the app we want to profile
sprite.exe
REM stop
xperf -d profile.etl
REM set symbol path
set _NT_SYMBOL_PATH = ^
C:\Projects\C++\fl lib\bin;^ REM dlls
C:\Projects\C++\fl lib\samples\bin;^ REM main exe
SRV*c:\symbols*http://msdl.microsoft.com/download/symbols
REM display profile
xperf profile.etl
I read through the docs and used the commands outlined however for some reason I dont seem to be getting any symbols, just a series of "unknowns" in the function column of the summary table for everything except the topmost set of the app I was trying to debug.... I set the enviromental variable to the microsoft server and the direcories containg the pdb's for the app. I also made sure to select the "Load Symbols" item before bringing up the summary table.
Arcording to the info I was reading it should take some time for the tabl to display while it loads the symbols, however for me the table displayed almost instantly and only the top most items in sprite.exe->sprite.exe had function names, the othe rows for function were either blank or "unknown"
Im using Vista SP1.
This is the batch file I used. Did I do anything that would prevent the sybols being loaded?
REM start profiler
xperf -on PROC_THREAD+LOADER+INTERRUPT+DPC+PROFILE^
-stackwalk profile -minbuffers 16 -maxbuffers 1024 -flushtimer 0^
-f tmp.etl
REM run the app we want to profile
sprite.exe
REM stop
xperf -d profile.etl
REM set symbol path
set _NT_SYMBOL_PATH = ^
C:\Projects\C++\fl lib\bin;^ REM dlls
C:\Projects\C++\fl lib\samples\bin;^ REM main exe
SRV*c:\symbols*http://msdl.microsoft.com/download/symbols
REM display profile
xperf profile.etl
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它使用什么版本的
dbghelp.dll？ 当使用安装在%SystemRoot%\system32dbghelp.dll版本时，我无法将 PDB 符号与kernrate和其他实用程序一起使用代码>.您可能需要将
dbghelp.dll和symsrv.dll从最新版本的 Windows 调试工具复制到 XPerf 可以找到的目录中。另外，您需要删除“=”之前的空格，否则您将定义“
_NT_SYMBOL_PATH” 变量（包括名称中的尾随空格）。在行尾添加注释也是行不通的。 行继续字符（例如“^”）通常需要是该行的最后一个字符。 当我运行该语句（在 XP 上）时，我最终得到了“
_NT_SYMBOL_PATH” 等于“C:\Projects\C++\fl lib\bin; REM dlls”，并且下一行出现错误。What version of
dbghelp.dllis it using? I've had trouble getting PDB symbols working withkernrateand other utilities when using the version ofdbghelp.dllthat is installed in%SystemRoot%\system32.You may need to copy
dbghelp.dllandsymsrv.dllfrom a recent version of Debugging Tools for Windows into a directory where XPerf can find it.Also, you need to remove the space before the '=', or else you're defining the "
_NT_SYMBOL_PATH" variable (including the trailing space in the name).Including comments at the end of a line is not going to work either. A line continuation character such as '^' typically needs to be the last character on the line. When I ran that statement (on XP), I ended up with "
_NT_SYMBOL_PATH" equal to "C:\Projects\C++\fl lib\bin; REM dlls" and an error about the next line.尝试设置
环境变量。 如果这不起作用，您可能必须使用 TracePdb.exe 从 PDB 手动提取 TMF 文件（或者至少使用常规路径而不是 SYM* 路径）。 这是迄今为止使用 ETL 跟踪/XPerf 最烦人的部分
Try setting the
environment variable. If that doesn't work, you may have to manually extract the TMF files from your PDBs using TracePdb.exe (or at least use a regular path instead of a SYM* path). This is by far the most annoying part of using ETL traces / XPerf