Re: kproc

Greg Wimpey <greg.wimpey_at_westerngeco*removetomail*.com.invalid> wrote:

>Paul Bennett <spacey845_at_my-deja.com> writes:
>
>> After reboot, when I run a ps -fu"oracle" (or a ps -ef), there are
>> about a dozen different kproc processes running, all owned by user
>> oracle and all started within a second of each other.
>>
>> Is this normal/expected? Are these zombies that are midway thru being
>> reaped? Do I need to reconfig something?
>
>They are definitely not zombies. They are processes providing kernel
>services (thus the name "kproc"). I would suspect that they are
>asynchronous IO servers. You can verify this with the "pstat -A"
>command. If you see these processes listed as "aioserver", then
>that's what you've got. I don't know of any other kernel process that
>runs as a user other than root. The AIO processes run under the user
>ID that first requested an AIO operation. However, they continue to
>provide service to any user making AIO requests.
>
>Hope this helps.
>--
>Greg Wimpey

I'll second this. Having recently gone through the exercise of tuning Async I/O.

Ted.

| Ted Linnell                 <edlinnell_at_zcslink.net.au>     |
| BSc GradDipDP CNA MACS PCP                                 |
| Nunawading, Victoria , Australia                           |
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