On Tue, 13 Jul 1999, David Malone wrote: > I think AIX sends all running processes a magic signal (SIGDANGER?) > which indicates that the system is short of resources, and if things > don't improve real soon then it sends a SIGKILL. Not that I'd suggest > that AIX does things the right way...
FYI, from InfoExplorer on an AIX 4.2.1 server: "The system monitors the number of free paging space blocks and detects when a paging-space shortage exists. When the number of free paging-space blocks falls below a threshold known as the paging-space warning level, the system informs all processes (except kprocs) of this condition by sending the SIGDANGER signal. If the shortage continues and falls below a second threshold known as the paging-space kill level, the system sends the SIGKILL signal to processes that are the major users of paging space and that do not have a signal handler for the SIGDANGER signal (the default action for the SIGDANGER signal is to ignore the signal). The system continues sending SIGKILL signals until the number of free paging-space blocks is above the paging-space kill level." Regards, Brian ------------------------------------------------------------------------- | Brian Stark | Internet : bst...@siemens-psc.com | | Siemens PT&D, LLC | Voice : +1 612 536-4697 | | Power Systems Control Division | Fax : +1 612 536-4919 | | 7225 Northland Drive, Brooklyn Park, Minnesota 55428 USA | ------------------------------------------------------------------------- To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-hackers" in the body of the message
