Icons for Memory Dump Analysis Patterns (Part 23)
Tuesday, April 13th, 2010Today we introduce an icon for Insufficient Memory (handle leak) pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Archive for the ‘Crash Dump Patterns’ Category
Icons for Memory Dump Analysis Patterns (Part 22)
Monday, April 12th, 2010Today we introduce an icon for Insufficient Memory (committed memory) pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 21)
Friday, April 9th, 2010Today we introduce an icon for No Component Symbols pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Memory Dump and Software Trace Analysis Training and Seminars
Friday, April 9th, 2010Plan to start providing training and seminars in my free time. If you are interested please answer these questions (you can either respond here in comments or use this form for private communication http://www.dumpanalysis.org/contact):
- Are you interested in on-site training, prefer traveling or attending webinars?
- Are you interested in software trace analysis as well?
- What specific topics are you interested in?
- What training level (beginner, intermediate, advanced) are you interested in? (please provide an example, if possible)
Additional topics of expertise that can be integrated into training include Source Code Reading and Analysis, Debugging, Windows Architecture, Device Drivers, Troubleshooting Tools Design and Implementation, Multithreading, Deep Down C and C++, x86 and x64 Assembly Language Reading.
Looking forward to your responses. Any suggestions are welcome.
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 20)
Thursday, April 8th, 2010Today we introduce an icon for OMAP Code Optimization pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 19)
Wednesday, April 7th, 2010Today we introduce an icon for Incorrect Stack Trace pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Crash Dump Analysis Patterns (Part 28b)
Wednesday, April 7th, 2010Previously introduced Coupled Processes pattern involves an active request (or an action) and an active wait for a response (or the action status):
It is illustrated on this simple UML sequence diagram (process timeline represent collective request-response threads):
However, there is so called weak coupling when a process subscribes for notifications. Such threads most of the time are passive and processes are not blocked:
The coupling manifests itself when notifier threads start spiking CPU and bring their share of CPU consumption to the notified threads:
Here is an example of such threads from the forthcoming pattern interaction case study:
5 Id: 61018.dbec Suspend: 1 Teb: 7ffae000 Unfrozen
ChildEBP RetAddr
01e3fa68 7c82787b ntdll!KiFastSystemCallRet
01e3fa6c 77c80a6e ntdll!NtRequestWaitReplyPort+0xc
01e3fab8 77c7fcf0 rpcrt4!LRPC_CCALL::SendReceive+0x230
01e3fac4 77c80673 rpcrt4!I_RpcSendReceive+0x24
01e3fad8 77ce315a rpcrt4!NdrSendReceive+0x2b
01e3fec0 771f4fbd rpcrt4!NdrClientCall2+0x22e
01e3fed8 771f4f60 winsta!RpcWinStationWaitSystemEvent+0x1c
01e3ff20 6582116c winsta!WinStationWaitSystemEvent+0x51
[...]
01e3ffec 00000000 kernel32!BaseThreadStart+0x34
In cases of synchronous notifications if a notified thread is blocked we have an instance of a reversed strong coupling.
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 18)
Tuesday, April 6th, 2010Today we introduce an icon for Changed Environment pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
The Korean Edition of Memory Dump Analysis Anthology, Volume 1
Monday, April 5th, 2010I’m very pleased to announce that the Korean edition is available:
The book can be found on:
- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 17)
Thursday, April 1st, 2010Today we introduce an icon for Deadlock (mixed objects, kernel space) pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 16)
Wednesday, March 31st, 2010Today we introduce an icon for Deadlock (LPC) pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 15)
Tuesday, March 30th, 2010Today we introduce an icon for Deadlock (mixed objects, user space) pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 14)
Monday, March 29th, 2010Today we introduce an icon for Deadlock (executive resources) pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 13)
Friday, March 26th, 2010Today we introduce an icon for Deadlock (critical sections) pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 12)
Thursday, March 25th, 2010Today we introduce an icon for Hidden Exception pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 11)
Wednesday, March 24th, 2010Today we introduce an icon for Inconsistent Dump pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 10)
Wednesday, March 24th, 2010Today we introduce an icon for NULL Pointer (data) pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 9)
Monday, March 22nd, 2010Today we introduce an icon for NULL Pointer (code) pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 8)
Friday, March 19th, 2010Today we introduce an icon for Invalid Pointer (general) pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -
Icons for Memory Dump Analysis Patterns (Part 7)
Thursday, March 18th, 2010Today we introduce an icon for Optimized Code pattern:
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- Dmitry Vostokov @ DumpAnalysis.org + TraceAnalysis.org -