SOS System Table Summary
The System Table Summary Screen
The System Table Summary screen reports configuration and utilization information of system
tables and caches. The screen is available in graphical and tabular formats.
To access the System Table Summary screen from any SOS display screen:
Type s from the SOS Enter command: prompt to view the Screen Selection Menu screen.
From the Screen Selection Menu screen, enter b (System Table Summary). The System Table Summary screen will display.
Type t to toggle between the graphical and tabular formats.
System Table Summary Screen Display Items
Graphical Format
An example of the System Table Summary in graphical format is shown in
Figure 23.1.
Figure 23.1 SOS System Table Summary screen (graphical format)
SYSTEM TABLE/CACHE SUMMARY
Table 23.1 SOS SYSTEM TABLE/CACHE SUMMARY data items
|
Data Item
|
Description
|
|
File Table Used%
|
The percentage of entries in the file table used.
|
|
File Table Entries
|
The number of entries configured for the file table.
|
|
File Lock Table Used%
|
The percentage of entries in the flock table used.
|
|
File Lock Table Entries
|
The number of entries configured for the flock table.
|
|
Pseudo TTY Table Used%
|
The percentage of entries in the pty table used.
|
|
Pseudo TTY Table Entries
|
The number of entries configured for the pty table.
|
|
Process Table Used%
|
The percentage of entries in the process table used.
|
|
Process Table Entries
|
The number of entries configured for the process table.
|
|
Inode Cache Used%
|
The percentage of entries in the inode cache used.
|
|
Inode Cache Entries
|
The number of entries configured for the inode cache.
|
|
Message Table Used%
|
The percentage of entries in the message queue table used.
|
|
Message Table Entries
|
The number of entries configured for the message queue table.
|
|
Message Buf Cache Used%
|
The percentage of entries in the message buffer cache used.
|
|
Message Buf Cache Entries
|
The size of the message buffer cache.
|
|
Semaphore Table Used%
|
The percentage of SysV semaphore identifiers used.
|
|
Semaphore Table Entries
|
The number of SysV semaphore identifiers configured.
|
|
Shared Mem Table Used%
|
The percentage of shared memory identifiers used.
|
|
Shared Mem Table Entries
|
The number of shared memory identifiers configured.
|
|
Shared Mem Used%
|
The percentage of shared memory pool used.
|
|
Shared Mem Entries
|
The size of shared memory pool, which may exceed the size of virtual memory.
|
|
DNLC Cache Hit%
|
The percentage of file name lookups that are satisfied in the DNLC (dynamic name lookup cache).
|
|
DNLC Cache Entries
|
The number of names configured in for the table.
|
|
SysV Buf Header Used%
|
The percentage of buffer headers used.
|
|
SysV Buf Header Entries
|
The number of buffer headers configured.
|
|
SysV Buf Cache Used%
|
The percentage of buffer cache used.
|
|
SysV Buf Cache Entries
|
The number of buffer cache entries configured.
|
|
SysV Buf Cache Hit%
|
The percentage of page faults satisfied in the buffer
cache.
|
.
Tabular Format
An example of the System Table Summary in tabular format is shown in
Figure 23.2.
Figure 23.2 SOS System Table Summary screen (tabular format)
MISC TABLE/CACHE SUMMARY
This section provides information about miscellaneous caches and tables.
Table 23.2 SOS MISC TABLE/CACHE SUMMARY data items
|
Data Item
|
Description
|
|
File Table
|
Entries
|
The configured number of entries for the file table.
|
|
Used
|
The number of file table entries used.
|
|
Used %
|
The percentage of file table entries used.
|
|
High
|
The highest number of file table entries used since SOS was started.
|
|
File Lock Table
|
Entries
|
The configured number of entries for the flock table.
|
|
Used
|
The number of file locks used.
|
|
Used %
|
The percentage of file locks used.
|
|
High
|
The highest number of file locks used since SOS was started.
|
|
Pseudo TTY Table
|
Entries
|
The configured number of entries for the pty table.
|
|
Used
|
The number of pty entries used.
|
|
Used %
|
The percentage of pty entries used.
|
|
High
|
The highest number of pty entries used since SOS was started.
|
|
Process Table
|
Entries
|
The configured number of entries for the process table.
|
|
Used
|
The number of process table entries used.
|
|
Used %
|
The percentage of process table entries used.
|
|
High
|
The highest number of process table entries used since SOS was started.
|
|
Inode Cache
|
Entries
|
The configured number of entries for the inode cache.
|
|
Used
|
The number of inode entries used.
|
|
Used %
|
The percentage of inode entries used.
|
|
High
|
The highest number of inode entries used since SOS was started.
|
IPC TABLE/CACHE SUMMARY
Table 23.3 SOS IPC TABLE/CACHE SUMMARY data items
|
Data Item
|
Statistics
|
Description
|
|
Message Table
|
Size
|
Not applicable.
|
|
Entries
|
The number of message queue entries configured.
|
|
Used
|
The number of message queues used.
|
|
Used %
|
The percentage of message queues used.
|
|
High
|
The highest number of message queues used.
|
|
Message Buffer Cache
|
Size
|
The configured size (bytes) of the message buffer cache.
|
|
Entries
|
Not applicable.
|
|
Used
|
The amount of message buffer cache used.
|
|
Used %
|
The percentage of message buffer cache used.
|
|
High
|
The highest amount of message buffer cache used.
|
|
Semaphore Table
|
Size
|
Not applicable.
|
|
Entries
|
The number of SysV semaphore identifiers configured.
|
|
Used
|
The number of SysV semaphore identifiers used.
|
|
Used %
|
The percentage of SysV semaphore identifiers used.
|
|
High
|
The highest number of SysV semaphore identifiers used.
|
|
Shared Memory Table
|
Size
|
Not applicable.
|
|
Entries
|
The number of shared memory identifiers configured.
|
|
Used
|
The number of shared memory identifiers used.
|
|
Used %
|
The percentage of shared memory identifiers used.
|
|
High
|
The highest number of shared memory identifiers used.
|
|
Shared Memory
|
Size
|
The configured size of shared memory pool, which can exceed the size of virtual memory.
|
|
Entries
|
Not applicable.
|
|
Used
|
The amount of shared memory pool used.
|
|
Used %
|
The percentage of shared memory pool used.
|
|
High
|
The highest amount of shared memory pool used.
|
DNLC CACHE SUMMARY
The DNLC CACHE SUMMARY portion of the System Table Summary screen displays
information about the DNLC (dynamic name lookup cache).
Table 23.4 SOS DNLC CACHE SUMMARY data items
|
Data Item
|
Description
|
|
Entries
|
The configured number of entries for DNLC.
|
|
Hit %
|
The percentage of file name lookups found in DNLC, avoiding expensive lookup.
|
|
Lookups/s
|
The number of file name lookups per second.
|
SYSV BUFFER CACHE SUMMARY
The SYSV BUFFER CACHE SUMMARY portion of the System Table Summary screen displays
information about the SysV buffer cache.
Table 23.5 SOS SYSV BUFFER CACHE SUMMARY data items
|
Data Item
|
Description
|
|
HEADER TABLE
|
Entries
|
The number of buffer headers configured.
If a DBC is configured, this number will change over time. For a definition of buffer headers, see "buffer cache headers".
|
|
Used
|
The number of buffer headers used.
|
|
Used %
|
The percentage of buffer headers used.
|
|
DATA CACHE
|
Min Size
|
The minimum size allowed for the dynamic buffer cache. If a fixed size buffer cache is configured, "N/A" will be displayed.
|
|
Max Size
|
The maximum size allowed for the dynamic buffer cache. If a fixed size buffer cache is configured, "N/A" will be displayed.
|
|
Size
|
The current size of the buffer cache.
|
|
Used
|
The kilobytes of buffer cache used.
|
|
Used %
|
The percentage of the buffer cache used.
|
|
High
|
The largest amount of buffer cache used.
|
|
Hit %
|
The percentage of reads/writes satisfied by the buffer cache.
|
