thread dump analysis

Tags: nts reposition HTML generally picture brings tool string ASE1. Introduction of the article1.1 Download and install1.2 Debugger1.3 Operator Interface2. Command Chapter2.1 Breakdown by Source2.1.1 Basic commands2.1.2-dollar Command2.1.3 Extension Commands2.2 Breakdown by function2.2.1 System Information2.2.2 Process2.2.3 Module2.2.4 Symbol2.2.5 Threads2.2.6 Memory2.2.7 Events3. Explore the article3.1 Method Inline3.2 String Resident Pool 1. Introduction of the articleIntroduction of the arti

The core dump information of the lingke vro is normal for network administrators when a router suddenly fails to be used, most of which are caused by a router crash, in this case, we must first save the key information of the memory. This is what we will talk about today. I. Core Dump Information(1) core dump refers to a complete image copy of The vro memory info

Since entering a start-up company, gradually become a dog, but have no harvest, feel their technical ability to play a few, work life in business logic upside down.The previous antennas on the service memory is tight, let operation to take down the dump, analysis of consolation.Let's start by counting the big object information.0:000>!dumpheap-min 85000-statstatistics: MT Count totalsize

WinDbg use a bit of trouble, but also to sign the table or something. Tried, the feeling shows very messy, analysis is not comprehensive ...Try something else! Today the computer is blue screen, use its dump file test, as follows:1, first, the most detailed , to be the Osr Online analysis website:Open its analysis addr

Test program Public classHeapoom {Private Static inti = 0; Static classOomobject {} Public Static voidMain (string[] args) {ListNewArraylist(); Try { while(true) {List.add (Newoomobject ()); I++; } } finally { //810325System.out.println (i); } }}Output:[GC (Allocation Failure) 5142k->3031k (19968K), 0.0070246secs] [GC (Allocation Failure) 8663K->7062k (19968K), 0.0066110secs] [GC (Allocation Failure) 12694K->12708k (19968K), 0.0091115secs] [Full GC (ergonomics) 1

Often encounter such scenes, self-test and single point of testing without any problems, but in the concurrent environment or production environment sometimes irregular anomalies, errors and so on. Adding a log in your code is one of the solutions, and when you crawl a specified exception, you can quickly locate the problem by WinDbg.Procdump Command Example: Procdump-ma-e 1–f SqlException w3wp.exeSeemingly procdump unable to crawl crash dump file, it

__unguarded_partition_pivot__comp=0x119d5c at/opt/arm-2010.09/bin/. /LIB/GCC/ARM-NONE-LINUX-GNUEABI/4.5.1/. /.. /.. /.. /arm-none-linux-gnueabi/include/c++/4.5.1/bits/stl_algo.h:2260#6 std::__introsort_loop__comp=0x119d5c at/opt/arm-2010.09/bin/. /LIB/GCC/ARM-NONE-LINUX-GNUEABI/4.5.1/. /.. /.. /.. /arm-none-linux-gnueabi/include/c++/4.5.1/bits/stl_algo.h:2302#7 0x0052ae68 in sortat/opt/arm-2010.09/bin/. /LIB/GCC/ARM-NONE-LINUX-GNUEABI/4.5.1/. /.. /.. /.. /arm-none-linux-gnueabi/include/c++/4.5.

Official Reference Document: Http://help.eclipse.org/juno/index.jsp?topic=%2Forg.eclipse.mat.ui.help%2Ftasks%2Fanalyzingthreads.html code/** * -XX:+PrintGC -Xloggc:gc.log * * VM args: -Xms20m -Xmx20m -XX:+HeapDumpOnOutOfMemoryError */public class HeapOOM {static class OOMObject {} public Static void main ( string [] ) throws interruptedexception { ListOOMObject> list = new ArrayListwhile(true){list.add(new OOMObject());//System.out.println("sleep");//Thread.sleep(1000l);}}The left

ObjectiveAfter we released our app, the error report mechanism of Windows phone helps us to collect the crash information of the program and send it to Microsoft's server, which can help the developers to improve the stability of the app.So how do you use these dump file? First we need to download these dump file from the Microsoft Developer website, and then use the Debug tool for

First, generate dump file mode1.1 Task ManagerAfter the program crashes, do not close the program, in the task Manager to find the process corresponding to the program. Create a dump file right-click.A dump file is created in the default directory.As you can see, this method only applies if the program crashes but does not immediately exit itself. This method is

In oracle, the default index type is B-tree index. Bitmap indexes, reverse key indexes, hash indexes, and function-based indexes. This article mainly introduces the B-tree index through dump analysis. For the index scan type, the basic operations of the index are not described in detail. System Information: [oracle @ localhost ~] $ CatetcissueEnterpriseLinuxEnt In oracle, the default index type is B-tree in

minidump_exception_information Loexceptioninfo; atLoexceptioninfo.exceptionpointers =Exceptioninfo; -Loexceptioninfo.threadid =GetCurrentThreadID (); -Loexceptioninfo.clientpointers =TRUE; -MiniDumpWriteDump (GetCurrentProcess (), GetCurrentProcessId (), Lhdumpfile, Minidumpnormal, loexceptioninfo, NULL, NULL); - - CloseHandle (lhdumpfile); in - /* to * Exception_continue_search: Passing exceptions to the debugger + * Exception_execute_handler: Error message not displayed - */ the retur

Here, we use the memory analyzer tool of eclipse to achieve Intelligent Analysis convenience. Download and install the tool first. We will equip the memory material below, starting from a simple one. Suppose there is a class that does not contain other information about the task. It is null: public class Node{}Then there is a mail function public class Main{public static void main(String[] args){Node n = new Node();}}Run the program and obtain a memor

Gossip Recent analysis of the problem, found in my environment, often have user-state process abnormal exit, but there is no core file generation, a simple look at the relevant kernel process, mark. Core Dump Fundamentals When the application in the user state exception, such as common segment errors, usually generate core files, through GDB analysis of core fil

Heap Dump Files1. Create a new project and set the size of the Eclispe Java heap:(1) Limit Java heap Size: The minimum-xms parameter is the same as the maximum value-XMX parameter setting to avoid the expansion of the heap-xmx20m-xms20m-xmn10m-xss1m (2) by parameter:-xx:+heapdumponoutofmemoryerrorAllows the VM to dump the current memory heap dump snapshot when a

termination failed to kill one or more processes Trace file analysis (trace too long extract key parts):SERVICE NAME: (sys$background) 2015-10-21 03:22:11.264Session ID: (1646.3) 2015-10-21 03:22:11.2642015-10-21 03:22:11.264Unable to get Enqueue on resource cf-00000000-00000000 (GES mode req=3 held=6)Possible local blocker ospid=367 sid=1648 sser=1 time_held=37 secs (GES mode req=6 held=4)Dump local bloc

dumpproject.pdb file, about the symbol file generation, as shown in the setup:Run the programDouble-click the DumpProject.exe file, according to the code logic, because the program has an exception, so the dump file will be generated, running the result as shown:The Project.dmp file is also generated, as shown in:Analyze problemsGet the DMP file, symbol file, while there is the corresponding source code, then use the WinDbg tool to solve the problem,

, the dumpproject.pdb file, about the symbol file generation, as shown in the setup:Run the programDouble-click the DumpProject.exe file, according to the code logic, because the program has an exception, so the dump file will be generated, running the result as shown:The Project.dmp file is also generated, as shown in:Analyze problemsGet the DMP file, symbol file, while there is the corresponding source code, then use the WinDbg tool to solve the pro

The development of the collection of vehicle data program ran for 3-5 hours, the following results will appear The Discovery program runs the memory in these several red dots fluctuation, in the cpu100% appears for a period of time the program will automatically end. Later, the use of tool commands to analyze the problem is due to insufficient memory leading to the GC because GC Task thread occupies a higher CPU. The specific steps are as follo

dumpproject.pdb file, about the symbol file generation, as shown in the setup:Run the programDouble-click the DumpProject.exe file, according to the code logic, because the program has an exception, so the dump file will be generated, running the result as shown:The Project.dmp file is also generated, as shown in:Analyze problemsGet the DMP file, symbol file, while there is the corresponding source code, then use the WinDbg tool to solve the problem,