Sudden application crash in servers Post: 303009780

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Operating Systems HP-UX Sudden application crash in servers Post 303009780 by anaigini45 on Tuesday 19th of December 2017 10:06:00 PM

12-19-2017

Registered User

Hi,

Thanks all for the tons of replies and suggestions.

Quote:

Possibly the system has run out of network buffer resources. Has the load/number of users been steadily increasing?

Network configurations determine the number of buffers available for network packets (of various different sizes) arriving and departing, and also the maximum number of connections.

Could be possible that the load/number of users steadily increased.
Network configurations in this sense means? Which file?
Maximum connections you mean maximum ssh connections allowed? I believe it is still at the system default which is 60.
A week or 2 earlier, there were few occurrences of where users were not able to login into the server due to too many ssh connections from one user which had root (0) privilege.

Quote:

You need to tell us all what hardware this is, what O/S you are running and which version. Give us a clue!!

Machine model : HP RX7640 ia64
OS version : HPUX B11.23
CPU : 4 Physical, 8 Core
Memory : 128 G

I am not aware of any security scanning devices used in the server.

There was nothing in particular happening in the server at the time of the crash.

anaigini45

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LEARN ABOUT NETBSD

crash

CRASH(8)						    BSD System Manager's Manual 						  CRASH(8)

NAME

     crash -- examine and debug system images

SYNOPSIS

     crash [-M core] [-N kernel]

DESCRIPTION

     The crash command is used to examine and debug system images.

     If run without any arguments, crash operates on the running system.

     The options are as follows:

     -M core	   Operate on the specified crash dump instead of the default /dev/mem.  Crash dumps should be from the same version of the system
		   and same machine architecture as the running version of crash, and must be uncompressed.

     -N kernel	   Extract the name list from the specified kernel instead of the default /dev/ksyms.

     The command syntax used by crash is the same as the in-kernel debugger.  See the ddb(4) manual page for more information.

     Operations and facilities that require a running system, such as breakpoints, are not supported by crash.

     crash does not provide pagination.  However, by using the pipe symbol, output may be sent to commands available from the shell.  For example:

	 crash> ps | more
	 crash> ps | grep ioflush

SEE ALSO

     ps(1), vmstat(1), ddb(4), pstat(8)

HISTORY

     The crash command appeared in NetBSD 6.0.

BSD
								   March 7, 2009							       BSD