OpenVMS Alpha System Analysis Tools Manual

Document revision date: 30 March 2001

OpenVMS Alpha System Analysis Tools Manual

Contents

Index

SHOW STACK

Displays the location and contents of the process stacks (of the SDA current process) and the system stack.

Format

SHOW STACK {range|/ALL|[/EXECUTIVE|/INTERRUPT|/KERNEL |/PHYSICAL|/SUPERVISOR|/SYSTEM|/USER]} {/LONG|/QUAD (d)}

Parameter

range
Range of memory locations you want to display in stack format. You can express a range using the following syntax:

m:n Range of addresses from m to n

m;n Range of addresses starting at m and continuing for n bytes

Qualifiers

/ALL
Displays the locations and contents of the four process stacks for the current SDA process and the system stack.
/EXECUTIVE
Shows the executive stack for the SDA current process.
/INTERRUPT
Shows the system stack and is retained for compatibility with OpenVMS VAX. The interrupt stack does not exist in OpenVMS Alpha.
/KERNEL
Shows the kernel stack for the SDA current process.
/LONG
Displays longword width stacks. If this qualifier is not specified, SDA by default displays quadword width stacks.
/PHYSICAL
Treats the start and/or end addresses in the given range as physical addresses. This qualifier is only relevant when a range is specified. By default, SDA treats range addresses as virtual addresses.
/QUAD
Displays quadword width stacks. This is the default.
/SUPERVISOR
Shows the supervisor stack for the SDA current process.
/SYSTEM
Shows the system stack.
/USER
Shows the user stack for the SDA current process.

Description

The SHOW STACK command, by default, displays the stack that was in use when the system failed, or, in the analysis of a running system, the current operating stack. For a process that became the SDA current process as the result of a SET PROCESS command, the SHOW STACK command by default shows its current operating stack.
The various qualifiers to the command allow display of any of the four per-process stacks for the SDA current process, as well as the system stack for the SDA current CPU. In addition, any given range can be displayed in stack format.
You can define SDA process and CPU context by using the SET CPU, SHOW CPU, SHOW CRASH, SET PROCESS, and SHOW PROCESS commands as indicated in their command descriptions. A complete discussion of SDA context control appears in Chapter 2, Section 2.5.
SDA provides the following information in each stack display:

Section Contents

Identity of stack SDA indicates whether the stack is a process stack (user, supervisor, executive, or kernel) or the system stack.

Stack pointer The stack pointer identifies the top of the stack. The display indicates the stack pointer by the symbol SP =>.

Stack address SDA lists all the addresses that the operating system has allocated to the stack. The stack addresses are listed in a column that increases in increments of 8 bytes (one quadword), unless you specify the /LONG qualifier in which case addresses are listed in increments of 4 (one longword).

Stack contents SDA lists the contents of the stack in a column to the right of the stack addresses.

Symbols SDA attempts to display the contents of a location symbolically, using a symbol and an offset.
If the stack is being displayed in quadword width and the location cannot be symbolized as a quadword, SDA will attempt to symbolize the least significant longword and then the most significant longword. If the address cannot be symbolized, this column is left blank.

Canonical stack When displaying the kernel stack of a noncurrent process in a crash dump, SDA identifies the stack locations used by the scheduler to store the register contents of the process.

Mechanism array
Signal array
Exception frame When displaying the current stack in a FATALEXCPT, INVEXCEPTN, SSRVEXCEPT, or UNXSIGNAL bugcheck, SDA identifies the stack locations used to store registers and other key data for these structures.

If a stack is empty, the display shows the following:
SP => (STACK IS EMPTY)

Section	Contents
Identity of stack	SDA indicates whether the stack is a process stack (user, supervisor, executive, or kernel) or the system stack.
Stack pointer	The stack pointer identifies the top of the stack. The display indicates the stack pointer by the symbol SP =>.
Stack address	SDA lists all the addresses that the operating system has allocated to the stack. The stack addresses are listed in a column that increases in increments of 8 bytes (one quadword), unless you specify the /LONG qualifier in which case addresses are listed in increments of 4 (one longword).
Stack contents	SDA lists the contents of the stack in a column to the right of the stack addresses.
Symbols	SDA attempts to display the contents of a location symbolically, using a symbol and an offset. If the stack is being displayed in quadword width and the location cannot be symbolized as a quadword, SDA will attempt to symbolize the least significant longword and then the most significant longword. If the address cannot be symbolized, this column is left blank.
Canonical stack	When displaying the kernel stack of a noncurrent process in a crash dump, SDA identifies the stack locations used by the scheduler to store the register contents of the process.
Mechanism array Signal array Exception frame	When displaying the current stack in a FATALEXCPT, INVEXCEPTN, SSRVEXCEPT, or UNXSIGNAL bugcheck, SDA identifies the stack locations used to store registers and other key data for these structures.

Example


SDA> SHOW STACK Current Operating Stack (SYSTEM): FFFFFFFF.8244BD08 FFFFFFFF.800600FC SCH$REPORT_EVENT_C+000FC FFFFFFFF.8244BD10 00000000.00000002 FFFFFFFF.8244BD18 00000000.00000005 FFFFFFFF.8244BD20 FFFFFFFF.8060C7C0 SP => FFFFFFFF.8244BD28 FFFFFFFF.8244BEE8 FFFFFFFF.8244BD30 FFFFFFFF.80018960 EXE$HWCLKINT_C+00260 FFFFFFFF.8244BD38 00000000.000001B8 FFFFFFFF.8244BD40 00000000.00000050 FFFFFFFF.8244BD48 00000000.00000210 UCB$N_RSID+00002 FFFFFFFF.8244BD50 00000000.00000000 FFFFFFFF.8244BD58 00000000.00000000 FFFFFFFF.8244BD60 FFFFFFFF.804045D0 SCH$GQ_IDLE_CPUS FFFFFFFF.8244BD68 FFFFFFFF.8041A340 EXE$GL_FKWAITFL+00020 FFFFFFFF.8244BD70 00000000.00000250 UCB$T_MSGDATA+00034 FFFFFFFF.8244BD78 00000000.00000001 CHF$IS_MCH_ARGS FFFFFFFF.8244BD80 00000000.0000002B CHF$PH_MCH_FRAME FFFFFFFF.8244BD88 FFFFFFFF.8244BFB0 CHF$IS_MCH_DEPTH FFFFFFFF.8244BD90 80000000.FFFFFFFD G CHF$PH_MCH_DADDR FFFFFFFF.8244BD98 00000000.00001600 CTL$C_CLIDATASZ+00060 CHF$PH_MCH_ESF_ADDR FFFFFFFF.8244BDA0 FFFFFFFF.8244BF40 CHF$PH_MCH_SIG_ADDR FFFFFFFF.8244BDA8 FFFFFFFF.8244BEE8 CHF$IH_MCH_SAVR0 FFFFFFFF.8244BDB0 FFFFFFFF.8041FB00 SMP$RELEASEL+00640 CHF$IH_MCH_SAVR1 FFFFFFFF.8244BDB8 00000000.00000000 CHF$IH_MCH_SAVR16 FFFFFFFF.8244BDC0 00000000.0000000D CHF$IH_MCH_SAVR17 FFFFFFFF.8244BDC8 0000FFF0.00007E04 CHF$IH_MCH_SAVR18 FFFFFFFF.8244BDD0 00000000.00000000 CHF$IH_MCH_SAVR19 FFFFFFFF.8244BDD8 00000000.00000001 CHF$IH_MCH_SAVR20 FFFFFFFF.8244BDE0 00000000.00000000 CHF$IH_MCH_SAVR21 FFFFFFFF.8244BDE8 FFFFFFFF.805AE4B6 SISR+0006E CHF$IH_MCH_SAVR22 FFFFFFFF.8244BDF0 00000000.00000001 CHF$IH_MCH_SAVR23 FFFFFFFF.8244BDF8 00000000.00000010 CHF$IH_MCH_SAVR24 FFFFFFFF.8244BE00 00000000.00000008 CHF$IH_MCH_SAVR25 FFFFFFFF.8244BE08 00000000.00000010 CHF$IH_MCH_SAVR26 FFFFFFFF.8244BE10 00000000.00000001 CHF$IH_MCH_SAVR27 FFFFFFFF.8244BE18 00000000.00000000 CHF$IH_MCH_SAVR28 FFFFFFFF.8244BE20 FFFFFFFF.804045D0 SCH$GQ_IDLE_CPUS FFFFFFFF.8244BE28 30000000.00000300 UCB$L_PI_SVA FFFFFFFF.8244BE30 FFFFFFFF.80040F6C EXE$REFLECT_C+00950 FFFFFFFF.8244BE38 18000000.00000300 UCB$L_PI_SVA FFFFFFFF.8244BE40 FFFFFFFF.804267A0 EXE$CONTSIGNAL+00228 FFFFFFFF.8244BE48 00000000.7FFD00A8 PIO$GW_IIOIMPA FFFFFFFF.8244BE50 00000003.00000000 FFFFFFFF.8244BE58 FFFFFFFF.8003FC20 EXE$CONNECT_SERVICES_C+00920 FFFFFFFF.8244BE60 FFFFFFFF.8041FB00 SMP$RELEASEL+00640 FFFFFFFF.8244BE68 00000000.00000000 FFFFFFFF.8244BE70 FFFFFFFF.8042CD50 SCH$WAIT_PROC+00060 FFFFFFFF.8244BE78 00000000.0000000D FFFFFFFF.8244BE80 0000FFF0.00007E04 FFFFFFFF.8244BE88 00000000.00000000 FFFFFFFF.8244BE90 00000000.00000001 FFFFFFFF.8244BE98 00000000.00000000 FFFFFFFF.8244BEA0 FFFFFFFF.805AE4B6 SISR+0006E FFFFFFFF.8244BEA8 00000000.00000001 FFFFFFFF.8244BEB0 00000000.00000010 FFFFFFFF.8244BEB8 00000000.00000008 FFFFFFFF.8244BEC0 00000000.00000010 FFFFFFFF.8244BEC8 00000000.00000001 FFFFFFFF.8244BED0 00000000.00000000 FFFFFFFF.8244BED8 FFFFFFFF.804045D0 SCH$GQ_IDLE_CPUS FFFFFFFF.8244BEE0 00000000.00000001 CHF$L_SIG_ARGS FFFFFFFF.8244BEE8 0000000C.00000005 CHF$L_SIG_ARG1 FFFFFFFF.8244BEF0 FFFFFFFC.00010000 SYS$K_VERSION_08 FFFFFFFF.8244BEF8 00000300.FFFFFFFC UCB$L_PI_SVA FFFFFFFF.8244BF00 00000002.00000001 FFFFFFFF.8244BF08 00000000.0000000C FFFFFFFF.8244BF10 00000000.00000000 FFFFFFFF.8244BF18 00000000.FFFFFFFC FFFFFFFF.8244BF20 00000008.00000000 FFFFFFFF.8244BF28 00000000.00000001 FFFFFFFF.8244BF30 00000008.00000000 FFFFFFFF.8244BF38 00000000.FFFFFFFC INTSTK$Q_R2 FFFFFFFF.8244BF40 FFFFFFFF.80404668 SCH$GL_ACTIVE_PRIORITY INTSTK$Q_R3 FFFFFFFF.8244BF48 FFFFFFFF.8042F280 SCH$WAIT_KERNEL_MODE INTSTK$Q_R4 FFFFFFFF.8244BF50 FFFFFFFF.80615F00 INTSTK$Q_R5 FFFFFFFF.8244BF58 00000000.00000000 INTSTK$Q_R6 FFFFFFFF.8244BF60 FFFFFFFF.805AE000 INTSTK$Q_R7 FFFFFFFF.8244BF68 00000000.00000000 INTSTK$Q_PC FFFFFFFF.8244BF70 00000000.FFFFFFFC INTSTK$Q_PS FFFFFFFF.8244BF78 30000000.00000300 UCB$L_PI_SVA FFFFFFFF.8244BF80 FFFFFFFF.80404668 SCH$GL_ACTIVE_PRIORITY FFFFFFFF.8244BF88 00000000.7FFD00A8 PIO$GW_IIOIMPA FFFFFFFF.8244BF90 00000000.00000000 FFFFFFFF.8244BF98 FFFFFFFF.8042CD50 SCH$WAIT_PROC+00060 FFFFFFFF.8244BFA0 00000000.00000044 FFFFFFFF.8244BFA8 FFFFFFFF.80403C30 SMP$GL_FLAGS Prev SP (8244BFB0) => FFFFFFFF.8244BFB0 FFFFFFFF.8042CD50 SCH$WAIT_PROC+00060 FFFFFFFF.8244BFB8 00000000.00000000 FFFFFFFF.8244BFC0 FFFFFFFF.805EE040 FFFFFFFF.8244BFC8 FFFFFFFF.8006DB54 PROCESS_MANAGEMENT_NPRO+0DB54 FFFFFFFF.8244BFD0 FFFFFFFF.80404668 SCH$GL_ACTIVE_PRIORITY FFFFFFFF.8244BFD8 FFFFFFFF.80615F00 FFFFFFFF.8244BFE0 FFFFFFFF.8041B220 SCH$RESOURCE_WAIT FFFFFFFF.8244BFE8 00000000.00000044 FFFFFFFF.8244BFF0 FFFFFFFF.80403C30 SMP$GL_FLAGS FFFFFFFF.8244BFF8 00000000.7FF95E00

SDA>  SHOW STACK
Current Operating Stack (SYSTEM):
                       FFFFFFFF.8244BD08  FFFFFFFF.800600FC  SCH$REPORT_EVENT_C+000FC
                       FFFFFFFF.8244BD10  00000000.00000002  
                       FFFFFFFF.8244BD18  00000000.00000005  
                       FFFFFFFF.8244BD20  FFFFFFFF.8060C7C0  
                SP =>  FFFFFFFF.8244BD28  FFFFFFFF.8244BEE8  
                       FFFFFFFF.8244BD30  FFFFFFFF.80018960  EXE$HWCLKINT_C+00260
                       FFFFFFFF.8244BD38  00000000.000001B8  
                       FFFFFFFF.8244BD40  00000000.00000050  
                       FFFFFFFF.8244BD48  00000000.00000210  UCB$N_RSID+00002
                       FFFFFFFF.8244BD50  00000000.00000000  
                       FFFFFFFF.8244BD58  00000000.00000000  
                       FFFFFFFF.8244BD60  FFFFFFFF.804045D0  SCH$GQ_IDLE_CPUS
                       FFFFFFFF.8244BD68  FFFFFFFF.8041A340  EXE$GL_FKWAITFL+00020
                       FFFFFFFF.8244BD70  00000000.00000250  UCB$T_MSGDATA+00034
                       FFFFFFFF.8244BD78  00000000.00000001  
CHF$IS_MCH_ARGS        FFFFFFFF.8244BD80  00000000.0000002B  
CHF$PH_MCH_FRAME       FFFFFFFF.8244BD88  FFFFFFFF.8244BFB0  
CHF$IS_MCH_DEPTH       FFFFFFFF.8244BD90  80000000.FFFFFFFD  G
CHF$PH_MCH_DADDR       FFFFFFFF.8244BD98  00000000.00001600  CTL$C_CLIDATASZ+00060
CHF$PH_MCH_ESF_ADDR    FFFFFFFF.8244BDA0  FFFFFFFF.8244BF40  
CHF$PH_MCH_SIG_ADDR    FFFFFFFF.8244BDA8  FFFFFFFF.8244BEE8  
CHF$IH_MCH_SAVR0       FFFFFFFF.8244BDB0  FFFFFFFF.8041FB00  SMP$RELEASEL+00640
CHF$IH_MCH_SAVR1       FFFFFFFF.8244BDB8  00000000.00000000  
CHF$IH_MCH_SAVR16      FFFFFFFF.8244BDC0  00000000.0000000D  
CHF$IH_MCH_SAVR17      FFFFFFFF.8244BDC8  0000FFF0.00007E04  
CHF$IH_MCH_SAVR18      FFFFFFFF.8244BDD0  00000000.00000000  
CHF$IH_MCH_SAVR19      FFFFFFFF.8244BDD8  00000000.00000001  
CHF$IH_MCH_SAVR20      FFFFFFFF.8244BDE0  00000000.00000000  
CHF$IH_MCH_SAVR21      FFFFFFFF.8244BDE8  FFFFFFFF.805AE4B6  SISR+0006E
CHF$IH_MCH_SAVR22      FFFFFFFF.8244BDF0  00000000.00000001  
CHF$IH_MCH_SAVR23      FFFFFFFF.8244BDF8  00000000.00000010  
CHF$IH_MCH_SAVR24      FFFFFFFF.8244BE00  00000000.00000008  
CHF$IH_MCH_SAVR25      FFFFFFFF.8244BE08  00000000.00000010  
CHF$IH_MCH_SAVR26      FFFFFFFF.8244BE10  00000000.00000001  
CHF$IH_MCH_SAVR27      FFFFFFFF.8244BE18  00000000.00000000  
CHF$IH_MCH_SAVR28      FFFFFFFF.8244BE20  FFFFFFFF.804045D0  SCH$GQ_IDLE_CPUS
                       FFFFFFFF.8244BE28  30000000.00000300  UCB$L_PI_SVA
                       FFFFFFFF.8244BE30  FFFFFFFF.80040F6C  EXE$REFLECT_C+00950
                       FFFFFFFF.8244BE38  18000000.00000300  UCB$L_PI_SVA
                       FFFFFFFF.8244BE40  FFFFFFFF.804267A0  EXE$CONTSIGNAL+00228
                       FFFFFFFF.8244BE48  00000000.7FFD00A8  PIO$GW_IIOIMPA
                       FFFFFFFF.8244BE50  00000003.00000000  
                       FFFFFFFF.8244BE58  FFFFFFFF.8003FC20  EXE$CONNECT_SERVICES_C+00920
                       FFFFFFFF.8244BE60  FFFFFFFF.8041FB00  SMP$RELEASEL+00640
                       FFFFFFFF.8244BE68  00000000.00000000  
                       FFFFFFFF.8244BE70  FFFFFFFF.8042CD50  SCH$WAIT_PROC+00060
                       FFFFFFFF.8244BE78  00000000.0000000D  
                       FFFFFFFF.8244BE80  0000FFF0.00007E04  
                       FFFFFFFF.8244BE88  00000000.00000000  
                       FFFFFFFF.8244BE90  00000000.00000001  
                       FFFFFFFF.8244BE98  00000000.00000000  
                       FFFFFFFF.8244BEA0  FFFFFFFF.805AE4B6  SISR+0006E
                       FFFFFFFF.8244BEA8  00000000.00000001  
                       FFFFFFFF.8244BEB0  00000000.00000010  
                       FFFFFFFF.8244BEB8  00000000.00000008  
                       FFFFFFFF.8244BEC0  00000000.00000010  
                       FFFFFFFF.8244BEC8  00000000.00000001  
                       FFFFFFFF.8244BED0  00000000.00000000  
                       FFFFFFFF.8244BED8  FFFFFFFF.804045D0  SCH$GQ_IDLE_CPUS
                       FFFFFFFF.8244BEE0  00000000.00000001  
CHF$L_SIG_ARGS         FFFFFFFF.8244BEE8  0000000C.00000005  
CHF$L_SIG_ARG1         FFFFFFFF.8244BEF0  FFFFFFFC.00010000  SYS$K_VERSION_08
                       FFFFFFFF.8244BEF8  00000300.FFFFFFFC  UCB$L_PI_SVA
                       FFFFFFFF.8244BF00  00000002.00000001  
                       FFFFFFFF.8244BF08  00000000.0000000C  
                       FFFFFFFF.8244BF10  00000000.00000000  
                       FFFFFFFF.8244BF18  00000000.FFFFFFFC  
                       FFFFFFFF.8244BF20  00000008.00000000  
                       FFFFFFFF.8244BF28  00000000.00000001  
                       FFFFFFFF.8244BF30  00000008.00000000  
                       FFFFFFFF.8244BF38  00000000.FFFFFFFC  
INTSTK$Q_R2            FFFFFFFF.8244BF40  FFFFFFFF.80404668  SCH$GL_ACTIVE_PRIORITY
INTSTK$Q_R3            FFFFFFFF.8244BF48  FFFFFFFF.8042F280  SCH$WAIT_KERNEL_MODE
INTSTK$Q_R4            FFFFFFFF.8244BF50  FFFFFFFF.80615F00  
INTSTK$Q_R5            FFFFFFFF.8244BF58  00000000.00000000  
INTSTK$Q_R6            FFFFFFFF.8244BF60  FFFFFFFF.805AE000  
INTSTK$Q_R7            FFFFFFFF.8244BF68  00000000.00000000  
INTSTK$Q_PC            FFFFFFFF.8244BF70  00000000.FFFFFFFC  
INTSTK$Q_PS            FFFFFFFF.8244BF78  30000000.00000300  UCB$L_PI_SVA
                       FFFFFFFF.8244BF80  FFFFFFFF.80404668  SCH$GL_ACTIVE_PRIORITY
                       FFFFFFFF.8244BF88  00000000.7FFD00A8  PIO$GW_IIOIMPA
                       FFFFFFFF.8244BF90  00000000.00000000  
                       FFFFFFFF.8244BF98  FFFFFFFF.8042CD50  SCH$WAIT_PROC+00060
                       FFFFFFFF.8244BFA0  00000000.00000044  
                       FFFFFFFF.8244BFA8  FFFFFFFF.80403C30  SMP$GL_FLAGS
Prev SP (8244BFB0) =>  FFFFFFFF.8244BFB0  FFFFFFFF.8042CD50  SCH$WAIT_PROC+00060
                       FFFFFFFF.8244BFB8  00000000.00000000  
                       FFFFFFFF.8244BFC0  FFFFFFFF.805EE040  
                       FFFFFFFF.8244BFC8  FFFFFFFF.8006DB54  PROCESS_MANAGEMENT_NPRO+0DB54
                       FFFFFFFF.8244BFD0  FFFFFFFF.80404668  SCH$GL_ACTIVE_PRIORITY
                       FFFFFFFF.8244BFD8  FFFFFFFF.80615F00  
                       FFFFFFFF.8244BFE0  FFFFFFFF.8041B220  SCH$RESOURCE_WAIT
                       FFFFFFFF.8244BFE8  00000000.00000044  
                       FFFFFFFF.8244BFF0  FFFFFFFF.80403C30  SMP$GL_FLAGS
                       FFFFFFFF.8244BFF8  00000000.7FF95E00

The SHOW STACK command displays a system stack. The data shown above the stack pointer may not be valid. Note that the mechanism array, signal array, and exception frame symbols displayed on the left will appear only for INVEXCEPTN, FATALEXCPT, UNXSIGNAL, and SSRVEXCEPT bugchecks.

SHOW SUMMARY

Displays a list of all active processes and the values of the parameters used in swapping and scheduling these processes.

Format

SHOW SUMMARY [/IMAGE|/PROCESS_NAME=process_name
|/THREAD|/USER=username]

Parameters

None.

Qualifiers

/IMAGE
Causes SDA to display, if possible, the name of the image being executed within each process.
/PROCESS_NAME=process_name
Displays only processes with the specified process name. You can use wildcards in process_name, in which case SDA displays all matching processes. The default action is for SDA to display data for all processes, regardless of process name.
/THREAD
Displays information on all the current threads associated with the current process.
/USER=username
Displays only the processes of the specified user. You can use wildcards in username, in which case SDA displays processes of all matching users. The default action is for SDA to display data for all processes, regardless of username.

Description

The SHOW SUMMARY command displays the information in Table 4-25 for each active process in the system.

Table 4-25 Process Information in the SHOW SUMMARY Display
Column Contents

Extended PID The 32-bit number that uniquely identifies the process.

Indx Index of this process into the PCB array.

Process name Name assigned to the process.

Username Name of the user who created the process.

State Current state of the process. Table 4-26 shows the 14 states and their meanings.

Pri Current scheduling priority of the process.

PCB/KTB Address of the process control block or address of the kernel thread block.

PHD/FRED Address of the process header or address of the floating-point registers and execution data block.

Wkset Number (in decimal) of pages currently in the process working set.

Table 4-26 Current State Information
State Meaning

COM Computable and resident in memory

COMO Computable, but outswapped

CUR nn Currently executing on CPU ID nn

CEF Waiting for a common event flag

LEF Waiting for a local event flag

LEFO Outswapped and waiting for a local event flag

HIB Hibernating

HIBO Hibernating and outswapped

SUSP Suspended

SUSPO Suspended and outswapped

PFW Waiting for a page that is not in memory (page-fault wait)

FPG Waiting to add a page to its working set (free-page wait)

COLPG Waiting for a page collision to be resolved (collided-page wait); this usually occurs when several processes cause page faults on the same shared page

MWAIT Miscellaneous wait

RWxxx Waiting for system resource xxx

**Table 4-25 Process Information in the SHOW SUMMARY Display**
Column	Contents
Extended PID	The 32-bit number that uniquely identifies the process.
Indx	Index of this process into the PCB array.
Process name	Name assigned to the process.
Username	Name of the user who created the process.
State	Current state of the process. Table 4-26 shows the 14 states and their meanings.
Pri	Current scheduling priority of the process.
PCB/KTB	Address of the process control block or address of the kernel thread block.
PHD/FRED	Address of the process header or address of the floating-point registers and execution data block.
Wkset	Number (in decimal) of pages currently in the process working set.

**Table 4-26 Current State Information**
State	Meaning
COM	Computable and resident in memory
COMO	Computable, but outswapped
CUR nn	Currently executing on CPU ID nn
CEF	Waiting for a common event flag
LEF	Waiting for a local event flag
LEFO	Outswapped and waiting for a local event flag
HIB	Hibernating
HIBO	Hibernating and outswapped
SUSP	Suspended
SUSPO	Suspended and outswapped
PFW	Waiting for a page that is not in memory (page-fault wait)
FPG	Waiting to add a page to its working set (free-page wait)
COLPG	Waiting for a page collision to be resolved (collided-page wait); this usually occurs when several processes cause page faults on the same shared page
MWAIT	Miscellaneous wait
RWxxx	Waiting for system resource xxx

Example


SDA> SHOW SUMMARY Current process summary ----------------------- Extended Indx Process name Username State Pri PCB/KTB PHD/FRED Wkset -- PID -- ---- --------------- ----------- ------- --- -------- -------- ------ 00000041 0001 SWAPPER HIB 16 80C641D0 80C63E00 0 00000045 0005 IPCACP SYSTEM HIB 10 80DC0780 81266000 39 00000046 0006 ERRFMT SYSTEM HIB 8 80DC2240 8126C000 57 00000047 0007 OPCOM SYSTEM HIB 8 80DC3340 81272000 31 00000048 0008 AUDIT_SERVER AUDIT$SERVER HIB 10 80D61280 81278000 152 00000049 0009 JOB_CONTROL SYSTEM HIB 10 80D620C0 8127E000 50 0000004A 000A SECURITY_SERVER SYSTEM HIB 10 80DC58C0 81284000 253 0000004B 000B TP_SERVER SYSTEM HIB 10 80DC8900 8128A000 75 0000004C 000C NETACP DECNET HIB 10 80DBFE00 8125A000 78 0000004D 000D EVL DECNET HIB 6 80DCA080 81290000 76 0000004E 000E REMACP SYSTEM HIB 8 80DE4E00 81296000 14 00000050 0010 DECW$SERVER_0 SYSTEM HIB 8 80DEF940 812A2000 739 00000051 0011 DECW$LOGINOUT <login> LEF 4 80DF0F00 812A8000 273 00000052 0012 SYSTEM SYSTEM LEF 9 80D772C0 81260000 75

SDA>  SHOW SUMMARY
Current process summary
-----------------------
 Extended Indx Process name    Username    State   Pri PCB/KTB  PHD/FRED Wkset
-- PID -- ---- --------------- ----------- ------- --- -------- -------- ------
 00000041 0001 SWAPPER                      HIB     16 80C641D0 80C63E00   0
 00000045 0005 IPCACP          SYSTEM       HIB     10 80DC0780 81266000  39
 00000046 0006 ERRFMT          SYSTEM       HIB      8 80DC2240 8126C000  57
 00000047 0007 OPCOM           SYSTEM       HIB      8 80DC3340 81272000  31
 00000048 0008 AUDIT_SERVER    AUDIT$SERVER HIB     10 80D61280 81278000 152
 00000049 0009 JOB_CONTROL     SYSTEM       HIB     10 80D620C0 8127E000  50
 0000004A 000A SECURITY_SERVER SYSTEM       HIB     10 80DC58C0 81284000 253
 0000004B 000B TP_SERVER       SYSTEM       HIB     10 80DC8900 8128A000  75
 0000004C 000C NETACP          DECNET       HIB     10 80DBFE00 8125A000  78
 0000004D 000D EVL             DECNET       HIB      6 80DCA080 81290000  76
 0000004E 000E REMACP          SYSTEM       HIB      8 80DE4E00 81296000  14
 00000050 0010 DECW$SERVER_0   SYSTEM       HIB      8 80DEF940 812A2000 739
 00000051 0011 DECW$LOGINOUT   <login>      LEF      4 80DF0F00 812A8000 273
 00000052 0012 SYSTEM          SYSTEM       LEF      9 80D772C0 81260000  75

The SHOW SUMMARY command describes all active processes in the system at the time of the system failure. Note that there was no process in the CUR state at the time of the failure.

SHOW SYMBOL

Displays the hexadecimal value of a symbol and, if the value is equal to an address location, the contents of that location.

Format

SHOW SYMBOL [/ALL [/ALPHA|/VALUE]] symbol-name

Parameter

symbol-name
Name of the symbol to be displayed. You must provide a symbol-name, unless the /ALL qualifier is specified.

Qualifiers

/ALL
Displays information on all symbols whose names begin with the characters specified in symbol-name. If no symbol name is given, all symbols are displayed.
/ALPHA
When used with the /ALL qualifier, displays the symbols sorted only in alphabetical order. The default is to display the symbols twice, sorted alphabetically and then by value.
When used with a wildcard symbol name, displays the symbols in alphabetical order. This is the default action.
/VALUE
When used with the /ALL qualifier, displays the symbols sorted only in value order. The default is to display the symbols twice, sorted alphabetically and then by value.
When used with a wildcard symbol name, displays the symbols in value order.

Description

The SHOW SYMBOL command with the /ALL qualifier outputs all symbols whose names begin with the characters specified in symbol-name in both alphabetical order and in value order. If no symbol-name is given, all symbols are output.
The SHOW SYMBOL/ALL command is useful for determining the values of symbols that belong to a symbol set, as illustrated in the second example below.
The SHOW SYMBOL command without the /ALL qualifier allows for standard wildcards in the symbol-name parameter. By default, matching symbols are displayed only in alphabetical order. If you specify SHOW SYMBOL/VALUE, then matching symbols are output sorted by value. If you specify SHOW SYMBOL/ALPHA/VALUE, then matching symbols are displayed twice, sorted alphabetically and then by value.
The SHOW SYMBOL command without the /ALL qualifier and no wildcards in the symbol-name parameter outputs the value associated with the given symbol.
When displaying any symbol value, SDA also treats the value as an address and attempts to obtain the contents of the location. If successful, the contents are also displayed.

Examples

#1
SDA> SHOW SYMBOL G G = FFFFFFFF.80000000 : 6BFA8001.201F0104

The SHOW SYMBOL command evaluates the symbol G as FFFFFFFF.80000000₁₆ and displays the contents of address FFFFFFFF.80000000₁₆ as 6BFA8001.201F0104₁₆.

#2
SDA> SHOW SYMBOL/ALL BUG Symbols sorted by name ---------------------- BUG$L_BUGCHK_FLAGS = FFFFFFFF.804031E8 : 00000000.00000001 BUG$L_FATAL_SPSAV = FFFFFFFF.804031F0 : 00000000.00000001 BUG$REBOOT = FFFFFFFF.8042E320 : 00000000.00001808 BUG$REBOOT_C = FFFFFFFF.8004F4D0 : 47FB041D.47FD0600 . . . Symbols sorted by value ---------------------- BUG$REBOOT_C = FFFFFFFF.8004F4D0 :47FB041D.47FD0600 BUG$L_BUGCHK_FLAGS = FFFFFFFF.804031E8 :00000000.00000001 BUG$L_FATAL_SPSAV = FFFFFFFF.804031F0 :00000000.00000001 BUG$REBOOT = FFFFFFFF.8042E320 :00000000.00001808 . . .

SDA>  SHOW SYMBOL/ALL BUG
Symbols sorted by name
----------------------
BUG$L_BUGCHK_FLAGS          = FFFFFFFF.804031E8 : 00000000.00000001
BUG$L_FATAL_SPSAV           = FFFFFFFF.804031F0 : 00000000.00000001
BUG$REBOOT                  = FFFFFFFF.8042E320 : 00000000.00001808
BUG$REBOOT_C                = FFFFFFFF.8004F4D0 : 47FB041D.47FD0600
   .
   .
   .
Symbols sorted by value
----------------------
BUG$REBOOT_C                = FFFFFFFF.8004F4D0 :47FB041D.47FD0600
BUG$L_BUGCHK_FLAGS          = FFFFFFFF.804031E8 :00000000.00000001
BUG$L_FATAL_SPSAV           = FFFFFFFF.804031F0 :00000000.00000001
BUG$REBOOT                  = FFFFFFFF.8042E320 :00000000.00001808
   .
   .
   .

This example shows the display produced by the SHOW SYMBOL/ALL command. SDA searches its symbol table for all symbols that begin with the string "BUG" and displays the symbols and their values. Although certain values equate to memory addresses, it is doubtful that the contents of those addresses are actually relevant to the symbol definitions in this instance.

SHOW TQE

Displays the entries in the timer queue. The default output is a summary display of all timer queue entries (TQEs) in chronological order.

Format

SHOW TQE [/ADDRESS=n][/ALL][/BACKLINK][/PID=n]
[/ROUTINE=n]

Parameters

None.

Qualifiers

/ADDRESS=n
Outputs a detailed display of the TQE at the specified address.
/ALL
Outputs a detailed display of all TQEs.
/BACKLINK
Outputs the display of TQEs, either detailed (/ALL) or brief (default), in reverse order, starting at the entry furthest into the future.
/PID=n
Limits the display to the TQEs that affect the process with the specified internal PID. Note that the PID format required is the entire internal PID, including both the process index and the sequence number, and not the extended PID, or process index alone, as used elsewhere in SDA.
/ROUTINE=n
Limits the display to the TQEs for which the specified address is the fork PC.

Description

The SHOW TQE command allows the timer queue to be displayed. By default a summary display of all TQEs is output in chronological order, beginning with the next entry to become current.
The /ADDRESS, /PID, and /ROUTINE qualifiers are mutually exclusive. The /ADDRESS and /BACKLINK qualifiers are mutually exclusive.
In the summary display, the TQE type is given as a five-character code, as in the following:

Column Symbol Meaning

1 T Timer ($SETIMR) entry

S System subroutine entry

W Scheduled wakeup ($SCHDWK) entry

2 S Single-shot entry

R Repeated entry

3 D Delta time

A Absolute time

4 C CPU time

-- Elapsed time

5 E Extended format (64-bit TQE)

-- 32-bit TQE

Column	Symbol	Meaning
1	T	Timer ($SETIMR) entry
	S	System subroutine entry
	W	Scheduled wakeup ($SCHDWK) entry
2	S	Single-shot entry
	R	Repeated entry
3	D	Delta time
	A	Absolute time
4	C	CPU time
	--	Elapsed time
5	E	Extended format (64-bit TQE)
	--	32-bit TQE

Examples

1. SDA> SHOW TQE Timer queue entries ------------------- System time: 30-MAY-2000 14:49:46.17 First TQE time: 30-MAY-2000 14:49:46.19 TQE PID/ address Expiration Time Type routine -------- ----------------------------------------- ----- -------- 81214D40 009EADCE.C2B6EAB2 30-MAY-2000 14:49:46.19 TSD-- 0001000E 81352780 009EADCE.C2BD790E 30-MAY-2000 14:49:46.23 SRD-- 83955BA0 8126CB58 009EADCE.C2C4E946 30-MAY-2000 14:49:46.28 SRD-- 81184230 81210F00 009EADCE.C2CDEC76 30-MAY-2000 14:49:46.34 SRD-- 8252EAF8 8103FB28 009EADCE.C2E8C81B 30-MAY-2000 14:49:46.51 SRD-- 81041930 81210BC0 009EADCE.C2F0603A 30-MAY-2000 14:49:46.56 TSD-- 0001000E 83975948 009EADCE.C313B1BB 30-MAY-2000 14:49:46.79 SRD-- 83974B10 8131F5C0 009EADCE.C332AFCB 30-MAY-2000 14:49:47.00 SRD-- 811FDCD0 ... 8103FB00 FFFFFFFF.FFFFFFFF -<end>- TSD-- 00000000

This example shows the summary display of all TQEs.

2. SDA> SHOW TQE/ADDRESS=8131F5C0 Timer queue entry 8131F5C0 -------------------------- TQE Address: 8131F5C0 Type: 00000005 SYSTEM_SUBROUTINE REPEAT FLink: 8129C6D8 BLink: 83975948 Requestor process ID: 00000000 Access Mode: 00000000 Expiration time: 009EADD2.417463F4 30-MAY-2000 15:14:47.31 +67860 Delta repeat time: 00000000.00989680 0 00:00:01.00 Fork PC: 811FDCD0 NETDRIVER+190D0 Fork R3: 00000000.00000000 Fork R4: FFFFFFFF.8131DB00

Contents

Index

privacy and legal statement

6549PRO_020.HTML

m:n	Range of addresses from m to n
m;n	Range of addresses starting at m and continuing for n bytes

OpenVMS Alpha System Analysis Tools Manual

SHOW STACK

Format

Parameter

range

Qualifiers

/ALL

/EXECUTIVE

/INTERRUPT

/KERNEL

/LONG

/PHYSICAL

/QUAD

/SUPERVISOR

/SYSTEM

/USER

Description

Example

SHOW SUMMARY

Format

Parameters

Qualifiers

/IMAGE

/PROCESS_NAME=process_name

/THREAD

/USER=username

Description

Example

SHOW SYMBOL

Format

Parameter

symbol-name

Qualifiers

/ALL

/ALPHA

/VALUE

Description

Examples

SHOW TQE

Format

Parameters

Qualifiers

/ADDRESS=n

/ALL

/BACKLINK

/PID=n

/ROUTINE=n

Description