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Old 05-06-2011, 12:56 PM
Christopher Judd
 
Default Multiple instances of udev daemon?

Hi,

Is it normal to have multiple instances of udev daemon running?

user@gibbs:~/data/icp-ms/Routine/2011/Agilent7500$ ps aux | grep udev
root 381 0.0 0.0 21424 848 ? Ss May05 0:00 udevd --
daemon
root 7189 0.0 0.0 21420 472 ? S May05 0:00 udevd --
daemon
root 7190 0.0 0.0 21420 472 ? S May05 0:00 udevd --
daemon

-Chris

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| Christopher Judd, Ph. D. |
| Research Scientist III |
| NYS Dept. of Health judd@wadsworth.org |
| Wadsworth Center - ESP |
| P. O. Box 509 518 486-7829 |
| Albany, NY 12201-0509 |
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Old 05-06-2011, 03:45 PM
Camaleón
 
Default Multiple instances of udev daemon?

On Fri, 06 May 2011 08:56:35 -0400, Christopher Judd wrote:

> Is it normal to have multiple instances of udev daemon running?
>
> user@gibbs:~/data/icp-ms/Routine/2011/Agilent7500$ ps aux | grep udev
> root 381 0.0 0.0 21424 848 ? Ss May05 0:00 udevd --daemon
> root 7189 0.0 0.0 21420 472 ? S May05 0:00 udevd --daemon
> root 7190 0.0 0.0 21420 472 ? S May05 0:00 udevd --daemon

Only three? That sounds reasonable, at least to me. Maybe the daemon is
started by default with a predefined number of instances :-?

In lenny I only have one running, though:

sm01@stt008:~$ ps aux | grep udev
root 1085 0.0 0.0 18296 2424 ? S<s 07:43 0:00 udevd --daemon
sm01 7192 0.0 0.0 7240 828 pts/0 R+ 17:37 0:00 grep udev

Greetings,

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Camaleón


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Old 05-06-2011, 03:51 PM
Henrique de Moraes Holschuh
 
Default Multiple instances of udev daemon?

On Fri, 06 May 2011, Camaleón wrote:
> On Fri, 06 May 2011 08:56:35 -0400, Christopher Judd wrote:
> > Is it normal to have multiple instances of udev daemon running?
> >
> > user@gibbs:~/data/icp-ms/Routine/2011/Agilent7500$ ps aux | grep udev
> > root 381 0.0 0.0 21424 848 ? Ss May05 0:00 udevd --daemon
> > root 7189 0.0 0.0 21420 472 ? S May05 0:00 udevd --daemon
> > root 7190 0.0 0.0 21420 472 ? S May05 0:00 udevd --daemon

pstree can help. "pstree | grep udev" says:

udevd---2*[udevd]

I.e. udev forked two children.

It looks like normal (if new) behaviour.

--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh


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Old 05-06-2011, 03:56 PM
Simon Brandmair
 
Default Multiple instances of udev daemon?

Hello,

On 6/5/2011 15:00 Christopher Judd wrote:
> Is it normal to have multiple instances of udev daemon running?

I don't know if it is "normal". But on my system, I have three instances
of udev daemon as well.

Cheers,
Simon


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Old 05-06-2011, 10:41 PM
Stan Hoeppner
 
Default Multiple instances of udev daemon?

On 5/6/2011 10:45 AM, Camaleón wrote:

On Fri, 06 May 2011 08:56:35 -0400, Christopher Judd wrote:


Is it normal to have multiple instances of udev daemon running?

user@gibbs:~/data/icp-ms/Routine/2011/Agilent7500$ ps aux | grep udev
root 381 0.0 0.0 21424 848 ? Ss May05 0:00 udevd --daemon
root 7189 0.0 0.0 21420 472 ? S May05 0:00 udevd --daemon
root 7190 0.0 0.0 21420 472 ? S May05 0:00 udevd --daemon


Only three? That sounds reasonable, at least to me. Maybe the daemon is
started by default with a predefined number of instances :-?

In lenny I only have one running, though:

sm01@stt008:~$ ps aux | grep udev
root 1085 0.0 0.0 18296 2424 ? S<s 07:43 0:00 udevd --daemon
sm01 7192 0.0 0.0 7240 828 pts/0 R+ 17:37 0:00 grep udev


I was going to ask this same question myself. In Lenny I had only one,
in Squeeze I have 3.


Camaleón I'm surprised you haven't upgraded yet.

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Stan


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Archive: 4DC4790A.1050402@hardwarefreak.com">http://lists.debian.org/4DC4790A.1050402@hardwarefreak.com
 
Old 05-09-2011, 06:48 PM
Christopher Judd
 
Default Multiple instances of udev daemon?

On Friday 06 May 2011 11:56:05 Simon Brandmair wrote:
> Hello,
>
> On 6/5/2011 15:00 Christopher Judd wrote:
> > Is it normal to have multiple instances of udev daemon running?
>
> I don't know if it is "normal". But on my system, I have three instances
> of udev daemon as well.

I was curious about this, so I asked the maintainer. It is intentional,
similar to apache preforked.

-Chris

------------------------------------------------------------------------
| Christopher Judd, Ph. D. |
| Research Scientist III |
| NYS Dept. of Health judd@wadsworth.org |
| Wadsworth Center - ESP |
| P. O. Box 509 518 486-7829 |
| Albany, NY 12201-0509 |
------------------------------------------------------------------------


IMPORTANT NOTICE: This e-mail and any attachments may contain
confidential or sensitive information which is, or may be, legally
privileged or otherwise protected by law from further disclosure. It
is intended only for the addressee. If you received this in error or
from someone who was not authorized to send it to you, please do not
distribute, copy or use it or any attachments. Please notify the
sender immediately by reply e-mail and delete this from your
system. Thank you for your cooperation.



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