AIX 5L Problem Determination - IBM Redbooks

DSIRR Data Storage Interrupt Reason Register
The interrupt priority of the running context is shown in the (intpri=?) field at the
end of the line. The intpri value ranges from 0xb (INTBASE) to 0x0 (INTMAX).
The exception structure is not used for code 700 dumps.
The le subcommand can indicate the kernel extension that an address belongs
to. Take, for example, the address 0x0123cc5c. This is a kernel address, since it
starts 0x01, which indicates it is in segment 0, the kernel segment. To find the
kernel module that contains the code at this address, use the le subcommand.
For example:
> le 0123cc5c
LoadList entry at 0x04db7780
Module start:0x00000000_012316e0 Module filesize:0x00000000_00030fbc
Module *end:0x00000000_0126269c
*data:0x00000000_0125ef40 data length:0x00000000_0000375c
Use-count:0x000c load_count:0x0001 *file:0x00000000
flags:0x00000272 TEXT KERNELEX DATAINTEXT DATA DATAEXISTS
*exp:0x04e0e000 *lex:0x00000000 *deferred:0x00000000 *expsize:0x69626f64
Name: /usr/lib/drivers/pse/pse
ndepend:0x0001 maxdepend:0x0001
*depend[00]:0x04db7580
le_next: 04db7380
In this case, it can be seen that the code at address 0x0123cc5c is in module
/usr/lib/drivers/pse/pse. The le subcommand is only helpful for modules that are
already loaded into the kernel.
The proc subcommand
The proc subcommand displays entries in the process table. The process table is
made up of entries of type struct proc, one per active process. Entries in the
process table are pinned so that they are always resident in physical memory.
The process table contains information needed when the process has been
swapped out in order to get it running again at some point in the future. For
example:
> proc - 0
SLT ST PID PPID PGRP UID EUID TCNT NAME
0 a 0 0 0 0 0 1 swapper
FLAGS: swapped_in no_swap fixed_pri kproc
Links: *child:0xe3000170 *siblings:0x00000000 *uidl:0xe3001fa0
*ganchor:0x00000000 *pgrpl:0x00000000 *ttyl:0x00000000
Dispatch Fields: pevent:0x00000000 *synch:0xffffffff
lock:0x00000000 lock_d:0x01390000
Thread Fields: *threadlist:0xe6000000 threadcount:1
90 IBM ^ Certification Study Guide - AIX 5L Problem Determination Tools and Techniques