Re: Generate NMI to crash a hung system...


Hi,

Thanks for all of the replies. I'm more or less convinced that the
cause of our systems hanging is a combination of buggy kernels
(RHEL-AS-3-U3 2.4.21-20 or thereabouts) and a depletion of system
memory resulting in the hang (most of these servers are running Oracle
9 and 10 DBs) or Middleware type appservers (WebSphere etc).

However, the particular server I'm talking about DID write something to
the netdump server - it chucked out some logs. Normally we'll get a
section of appropriate console ouput put into a file called
/var/crash/<client_ip_date_time/log on the Netdump server. However we
should have also got a vmcore or at least a vmcore-incomplete which is
the memory dump that we were after. It was this that didn't get dumped
and I'm wondering if there is something I had to configure beforehand
on the netdump client to allow it to perform the full memory dump.

Thanks - Lee


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