topic kill -9 in Operating System - HP-UX

kill -9

Chen Khin wai — Tue, 22 Feb 2000 20:33:05 GMT

Hi

i want to know why some process can't be kill using command kill -9 xxx (xxx is
the pid)? Only a reboot will do.

Re: kill -9

Melvyn Burnard_1 — Wed, 23 Feb 2000 06:05:25 GMT

Usually a process cannot ignore SIGKILL (kill -9), unless it is blocked
awaiting completion of some I/O traffic.
This will normally be to something like a tape drive, or disc.
If the unit fails to respond, then the process sits blocked on I/O and will
ignore a kill -9

Re: kill -9

Brian Bates_1 — Wed, 23 Feb 2000 10:28:30 GMT

Have you tried using

kill s 9 xxx

instead of just

kill -9 xxx

- Brian

Re: kill -9

Chen Khin wai — Wed, 23 Feb 2000 17:46:00 GMT

Melvyn,

What symptoms causes this situation to occur?

Does this means I have a disk bottleneck or my disk is having problem?

Many Thanks.

Re: kill -9

Chen Khin wai — Wed, 23 Feb 2000 17:48:28 GMT

Brian,

I have not tried kill s 9. BUt I'll try when it occurs again. Actually what's
the difference with kill -9. I don't forsee it works either.

Re: kill -9

Brian Bates_1 — Thu, 24 Feb 2000 01:58:13 GMT

I'm not sure if kill -s 9 will work in place of kill -9 for you, but a
colleague of mine recently had similar problems on hp-ux 11 where he said kill
-9 didn't seem to work.

He later told me that using kill -s 9 was now the way to do it, and that kill
-9 was 'defunct'. Whether that is totally true or not I don't know.

Worth a try anyhow, I guess. Let me know if it works for you.

- Brian