topic Re: HowTo check RAM integrity and status in HP-UX 10.20 and 11.00 ? in Operating System - HP-UX

HowTo check RAM integrity and status in HP-UX 10.20 and 11.00 ?

Thomas Pohlen — Thu, 10 May 2001 09:29:09 GMT

Hi all,

i have sometimes problems when programs try to allocate their memory and are killed by the kernel through sig10 or sig11 signals.

Which tools from HP are for free to check the status of the RAM as well as its data integrity ?

Thanks for an reply..

Re: HowTo check RAM integrity and status in HP-UX 10.20 and 11.00 ?

Vincenzo Restuccia — Thu, 10 May 2001 09:34:58 GMT

If you have STM:
echo "selclass qualifier memory;info;wait;infolog"|cstm

Re: HowTo check RAM integrity and status in HP-UX 10.20 and 11.00 ?

Thomas Pohlen — Thu, 10 May 2001 11:11:19 GMT

What will be the result of this command in case of ram integrity errors or physical ram errors ( ok then i wont see the ram in the slots) ?

Regards

Re: HowTo check RAM integrity and status in HP-UX 10.20 and 11.00 ?

Jay Gaffney_4 — Fri, 11 May 2001 10:34:40 GMT

vincenzo restuccia wrote:
"If you have STM:
echo "selclass qualifier memory;info;wait;infolog"|cstm "

I had problems with "info" - Unknown keyword. But I had success putting each cstm command on its own line in a text file and running -

cstm < textfile

I added "view" to the end of the text file so I could see the log file.
I never knew STM worked like this, pretty cool.

THX,
JG

Re: HowTo check RAM integrity and status in HP-UX 10.20 and 11.00 ?

paul courry — Fri, 11 May 2001 13:03:31 GMT

The operating system will stop using any section of memory where the error rate is too high. (Note there IS a known bug (11.0 I believe) where this feature does not work on L class machines. Any patch junkies care to quote chapter and verse?).

However, if you start seeing a bunch of errors reported it is time to replace the card. Period. All memory comes with a lifetime guarantee today and IMHO when you start to see single bit errors being reported then that is gods way of telling you that double bit errors are around the corner and to get that card replaced before it crashes your system. (No card will detect double bit errors, your system simply crashes)