Log Open. Specifies the symbol path to use. User mode: Analyzes the thread stack to determine whether any threads are blocking other threads. dd* -> 32-bit pointer used Search for any memory containing printable Unicode strings -brk [INDEX]. kv ... dump stack; n = with frame #; f = distance between adjacent frames; L = omit source lines; number of stack frames to display MethodTable: 00007fff38dd6668 Specify the mask to use when displaying the registers.

The most of the examples are heavily inspired by Konrad Kokosa’s excellent book Pro .NET Memory Management.. For troubleshooting .NET (Core) memory or performance issues, there’re a lot of free or commercial tools available. gu ~= g @$ra Change ). This command must be enclosed in quotation marks. wt -i Module [-i Module2] .. Reload symbols for verifier.

u = Unicode string (must not be null-terminated) zu = Unicode string (NULL-terminated), ds [/c #] [Addr] p =StartAddress [Count] ["Command"] d = binary + dword, e[ b | w | d | q | f | D ] Addr Value d*u or = dump return register values (EAX value) of sub-functions .holdmem -d { Range | Address }, Hold and compare memory. x [Options] Module!Symbol StartAddress = Causes execution to begin at the specified address. While !heap -p -a [UserAddr] will dump a call-stack, no source information will be included. q = qword (8b) dS [/c #] [Addr], Dump string struct (struct! Extended page heap help This product This page. Flags must be surrounded by a single set of brackets without spaces. It can be placed any where as long as you reference it via the path. The ObjSize command includes the size of all child objects in addition to the parent. !dlls -i Change ), You are commenting using your Twitter account. List APIs in category # Dump specified regions (RegionUsageStack, RegionUsagePageHeap, ..), Brief Help

r Reg1, Reg2 MaxCount = max # elements to dump d = dword (4b) ]Name [-n|y] [Field] [Addr] -abcehioprsv. l+t, l-t, show line numbers
For remote debugging there are situtations where you may want to set these to different values. dt [-n|y] [mod! The default is 20 (0x14). Passes = Activate breakpoint after #Passes (it is ignored before) Executed every time the BP is hit. EEClass: 00007fff38f711e8 -y Name = partially match instead of default exact match Summary info, i.e. !heap -h [HeapAddr | Idx | 0] Below are some examples. x /n .. ub = Unsigned byte Default is full register length, thus r eax:uw would display two values as EAX is a 32-bit register. Total 6767 objects, !DumpHeap -mt 00007fff38dd6668 2. a) From WinDbg's command line do a !heap -p -h [HeapHandle], where [HeapHandle] is the value returned by HeapCreate. Learn more about installation and configuration in WinDbg Preview - Installation. id = Signed dword (4b) all threads

sort by name !heap Heap -B [alloc | realloc | free], Set conditional breakpoint in the heap manager [Heap = HeapAddr | Idx | 0] If the file exists, it will be overwritten. If this value matches any known symbol, this symbol is displayed as well. .echo "String". Set c++ as the default expression evaluator -> which processor's unwinder is used for stack tracing ------- Dump a list of possible Mask bits !dlls I've been staring at it for quite some time but I can't figure out where I'm doing wrong. ib = Signed byte Addr = start address of the list That is useful to understand if snapshot collected during peak pressure. EEClass: 00007fff8bb56c08 For general information on the startup parameters, see WinDbg Command-Line Options. NULL-terminated Unicode string. Debugging Tools for Windows, For an explanation of the possible, Creates a smart client, and connects to a process server that is already running. : r eax=5, edx=6)

sxe Change ), Production Debugging: A story about “Exception code: 0xe053534f” - Fog Creek Blog, Production Debugging: A story about “Exception code: 0xe053534f” - SkyOffice Consulting | SkyOffice Consulting, Uncovering a Memory Leak using WinDbg | Steve's Programming Blog, Load SOS extension (will identify sos location by loaded mscorwks path), .load c:\Windows\Microsoft.NET\Framework\v2.0.50727\sos, Latest extension commands help (SOS,SOSEX,PSSCOR), Like !help but for specifically for SOSEX, Display this screen or details about the specified command (SOSEX), Run dumpstack on all threads and show only ‘interesting’ (lock, hijacked, managed), unmanaged and managed call stack, better than !dumpheap (sosex), Unmanaged stack with arguments (kb4 limits stack to 4 frames), Unmanaged stacks without duplication, nice if have many worker threads, !dso [-verify] [top stack [bottom stack]], Objects stack trace (the actual object type and not where the method is), !mdso [/a | /r | /c:n | /t: | /mt:], Dumps object references on the stack and in CPU registers in the current context, !name2ee mscorlib.dll System.Threading.Thread. dqs [/c #] [Addr], Display words and symbols (memory at Addr is assumed to be a series of addresses in the symbol table) I believe from .NET 4.0 (new CLR) that’s the correct command, […] dump, open it up in windbg, and look around (there are tons of windbg cheat sheets around like this one, this one, or this one).

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