HP Visualize J5000 hp Visualize J5000, J7000 workstations owner's guide (a4978 - Page 175

Memory Failures,

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Troubleshooting Memory Failures Memory Failures The J5000/J7000 systems use Memory Page Deallocation, a feature that allows the system to provide information to the operating system about memory failures. Note that you must be superuser (root) to use the commands in this section. HP-UX 10.20 uses Memory Page Deallocation information to map out the failing memory areas, and continue normal operation. You can use the command memrpt with the detail switch to obtain information about the Memory Page Deallocation Table (PDT) as well as single-bit errors logged by the system. To test this command, type /usr/sbin/sysdiag at the shell prompt (#) and press Enter. At the DUI> prompt, type logtool and press Enter. At the LOGTOOL> prompt, type memrpt detail and press Enter. To exit the sysdiag and logtool utilities, use the exit command. The PDT can also be checked using the pdt command in the Service menu of the boot console handler. If a failing DIMM is replaced, use the Service menu pdt clear command to clear out the PDT. Chapter 9 175

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Chapter 9
175
Troubleshooting
Memory Failures
Memory Failures
The J5000/J7000 systems use Memory Page Deallocation, a feature that
allows the system to provide information to the operating system about
memory failures. Note that you must be superuser (
root
) to use the
commands in this section.
HP-UX 10.20 uses Memory Page Deallocation information to map out the
failing memory areas, and continue normal operation. You can use the
command
memrpt
with the
detail
switch to obtain information about
the Memory Page Deallocation Table (PDT) as well as single-bit errors
logged by the system. To test this command, type
/usr/sbin/sysdiag
at the shell prompt (
#
) and press
Enter
. At the
DUI>
prompt, type
logtool
and press
Enter
. At the
LOGTOOL>
prompt, type
memrpt detail
and press
Enter
.
To exit the
sysdiag
and
logtool
utilities, use the
exit
command.
The PDT can also be checked using the
pdt
command in the Service
menu of the boot console handler. If a failing DIMM is replaced, use the
Service menu
pdt clear
command to clear out the PDT.