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dumpmemory(1M)


dumpmemory -- dump memory while in system state 3

Synopsis

dumpmemory

Description

dumpmemory dumps all memory while the system is in system state 3 (multi-user state) and does not require a reboot of the system. Users can be active on the system when dumpmemory is executed because it doesn't interfere with other things going on in the system.

Unlike a normal system dump, which is a snapshot of the system taken when it is stopped, memory is constantly changing in system state 3. Thus, because of the volatility of the kernel structures, some of the information obtained with dumpmemory may not be valid. Nevertheless, dumpmemory can be very useful when you are analyzing a hung, or poorly performing application, or when you need to diagnose and correct poor system performance.

dumpmemory prompts you for a filename, in which it will save the memory dump. The file you name should be in a filesystem with enough space to hold all the memory on your system because that's what will be dumped.

References

crash(1M)
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004