How to debug KDB?
How do I debug code in kdb?
- type ‘(single quote) to pop the stack.
- type :(colon) to resume execution.
- type \(slash) to exit debug mode.
How do you use KDB?
To enter kdb using a breakpoint, first invoke kdb using the Magic SysRq key (see above), then set a breakpoint. Then type ‘go’ to continue execution. When the breakpoint is hit, the debugger shell will appear. In the example that follows, items in italics are commands typed by a user.
How do I run KGDB?
In order to use kgdb you must activate it by passing configuration information to one of the kgdb I/O drivers. If you do not pass any configuration information kgdb will not do anything at all. Kgdb will only actively hook up to the kernel trap hooks if a kgdb I/O driver is loaded and configured.
What is KDB programming?
kdb+ is a column-based relational time series database (TSDB) with in-memory (IMDB) abilities, developed and marketed by Kx Systems. The database is commonly used in high-frequency trading (HFT) to store, analyze, process, and retrieve large data sets at high speed.
What is the full form of KDB?
KDB Full Form
| Full Form | Category | Term |
|---|---|---|
| Kambalda | Airport Code | KDB |
| Kevin De Bruyne | Sports | KDB |
What is the purpose of a kernel debugger?
A kernel debugger might be a stub implementing low-level operations, with a full-blown debugger such as GNU Debugger (gdb), running on another machine, sending commands to the stub over a serial line or a network connection, or it might provide a command line that can be used directly on the machine being debugged.
What is KDB in AIX?
The KDB kernel debugger and the kdb command are useful for debugging device drivers, kernel extensions, and the kernel itself. Although they appear similar, the KDB kernel debugger and the kdb command are two separate tools: KDB KERNEL DEBUGGER.
How do I enable early boot debugging in KGDB?
Early boot debugging requires a KGDB I/O driver that supports early debugging and the driver must be built into the kernel directly. Kgdb I/O driver configuration takes place via kernel or module parameters which you can learn more about in the in the section that describes the parameter kgdboc.
How to debug kgdboc with no debugger proxy?
When using kgdboc with no debugger proxy, you can end up connecting the debugger at one of two entry points. If an exception occurs after you have loaded kgdboc, a message should print on the console stating it is waiting for the debugger. In this case you disconnect your terminal program and then connect the debugger in its place.
How do I build KDB into the kernel?
In order to build kdb into the kernel you follow the same steps as you would for kgdb. The main config option for kdb is CONFIG_KGDB_KDB which is called KGDB_KDB: include kdb frontend for kgdb in the config menu.
How do I debug the kernel?
The kernel has two different debugger front ends (kdb and kgdb) which interface to the debug core. It is possible to use either of the debugger front ends and dynamically transition between them if you configure the kernel properly at compile and runtime.