Questions tagged [windbg]
12 questions
4
votes
3 answers
IIS7 w3wp process hung on recycle
A single server has started to sometime leave zombie w3wp.exe processes when trying to recycle. A new process is spawned properly and everything seems to work, except the old processes are still present and take up memory. Task manager reports…
Mark S. Rasmussen
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3
votes
1 answer
Windbg: Can't get next object after a Free object
I know that fragmentation typically occurs when an object collected by
garbage collection is marked as a "free" block, but the object
occupying the next address space is pinned. I can get a list of Free
objects, but cannot seem to find out what is…
Jeff Costa
- 481
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- 9
2
votes
1 answer
What steps are required to debug a memory.dmp? (walkthrough included)
I woke up to this in my eventlog today:
The computer has rebooted from a bugcheck.
The bugcheck was: 0x000000ef (0xffffe0018668f080, 0x0000000000000000, 0x0000000000000000, 0x0000000000000000).
A dump was saved in: C:\Windows\MEMORY.DMP. Report…
makerofthings7
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2
votes
1 answer
Windbg / minidump - how do I get a process list with memory use
I've used Windbg only for the most simple !analyze -v in the past. Now I've got a bit of a problem...
Some process is running wild and consumes all available memory (I can see it spike in monitoring sw), but I've not been able to get eyes on when…
Gomibushi
- 1,303
- 1
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2
votes
2 answers
Where (and how) to put PDB files for custom .NET code?
Our developer sent me a PDB file to help debug a custom application. I currently have my symbol directory set to c:\symbols, and several Microsoft symbols are there in this folder format:
ntdll.pdb
| -----GUID
| ---->…
Jeff Costa
- 481
- 3
- 9
1
vote
0 answers
What are Potential Causes of Windows to Flash Orange at Startup
On a Windows 7 PosReady operating system, observe an orange flash at startup. It happens very quickly, it is almost unnoticeable. To capture it I launched in Hyper-V and set CPU to max use 1% to slow down boot process. A google search of this…
Malcolm McCaffery
- 273
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1
vote
4 answers
How can I interpret a windows dmp file analysis using Windbg?
I have uploaded the full debug output here.
I've got a Windows 7 RTM 64 bit machine that is crashing intermittently and I managed to load the correct symbols and get what seems to be a proper analysis. I don't know where to go from here or go about…
user26105
1
vote
1 answer
Analyzing crashdump, wrong symbols
I am having trouble analyzing a crashdump with windbg. I run:
.sympath SRV*c:\symbols*http://msdl.microsoft.com/download/symbols
.reload /f /i
To get the symbols. All symbols seem to have downloaded to c:\symbols and then i run:
analyze -v
To…
Sebastian Hoffback
- 111
- 2
1
vote
1 answer
Excessive NonPaged Pool Usage
This is the output of !vm command from an hang dump. The system hangs every 3-4 days.
*** Virtual Memory Usage ***
Physical Memory: 16774339 ( 67097356 Kb)
Page File: \??\C:\pagefile.sys
Current: 68157440 Kb Free Space: 68145560…
daewonyoon
- 113
- 3
0
votes
0 answers
IIS 7 Application Pool Crash how to debug
We have several websites configured on our windows server 2012 and we noticed that one site seems crashing intermittently and the only way to get back this online is to restart that particular site and for some reason recycle application pool seems…
0
votes
0 answers
Sudden High Cpu on Windows Server 2012 R2
We have simple ASP.NET web application(ASP.NET 2.0) on production with 2 web server and each web server has 64GB RAM and 32 cores. The production site sometimes suddenly spike the CPU to 90-100% on both servers(offcourse only w3wp.exe). Also, we…
user960567
- 329
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0
votes
1 answer
w3wp hanging - possible blocked threads? Trying to debug with WinDbg
I have been having trouble for the past week where one of my web apps running on IIS is hanging at random times at least once a day, I have to recycle the app pool to kick it back into life. CPU and memory seems normal.
When I look at the active…
Paul Hinett
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