pthread_create() fails SysV in myDaemon on boot

[Michael D. Berger]

Please pardon me if you see this twice.  I thought that the
newsgroup and the e-mail list were the same thing, but I now
see they are not.

In F15_64, on starting SysV myDaemon in level 3, with S99myDaemon

rtn = pthread_create() fails with:
   rtn=1=Operation not permitted

man pthread_create says this means:
   No permission to set the scheduling policy and parameters specified in
   attr.

This happens for:
   policy = SCHED_FIFO
   policy = SCHED_RR

This code works if, after boot, I start it with:
   /etc/init.d/myDaemon start

and starts on boot in my old CentOS 5 box.

Thanks for your suggestions.
Mike.

--
Michael D. Berger
[e-mail]
http://www.rosemike.net/

[Rick Stevens]

On 11/02/2011 02:54 PM, Michael D. Berger wrote:
> Please pardon me if you see this twice.  I thought that the
> newsgroup and the e-mail list were the same thing, but I now
> see they are not.
>
> In F15_64, on starting SysV myDaemon in level 3, with S99myDaemon
>
> rtn = pthread_create() fails with:
>    rtn=1=Operation not permitted
>
> man pthread_create says this means:
>    No permission to set the scheduling policy and parameters specified in
>    attr.
>
> This happens for:
>    policy = SCHED_FIFO
>    policy = SCHED_RR
>
> This code works if, after boot, I start it with:
>    /etc/init.d/myDaemon start
>
> and starts on boot in my old CentOS 5 box.

When you start it via the initscripts (/etc/init.d), are you doing as
the root user or as an unprivileged user?  I'm suspecting a permissions
issue here in that the threads (actually lightweight processes) are
being run as different users.

You might try using "ps uax -L" and looking at the various threads
involved to see who's running what.
----------------------------------------------------------------------
- Rick Stevens, Systems Engineer, C2 Hosting          [e-mail] -
- AIM/Skype: therps2        ICQ: 22643734            Yahoo: origrps2 -
-                                                                    -
-                Huked on foniks reely wurked for me!                -
----------------------------------------------------------------------

[Michael D. Berger]

> -----Original Message-----
> From: [e-mail] 
> [mailto:[e-mail]] On Behalf Of 
> Rick Stevens
> Sent: Wednesday, November 02, 2011 18:03
> To: Community support for Fedora users
> Subject: Re: pthread_create() fails SysV in myDaemon on boot

[...]
> When you start it via the initscripts (/etc/init.d), are you 
> doing as the root user or as an unprivileged user?  I'm 
> suspecting a permissions issue here in that the threads 
> (actually lightweight processes) are being run as different users.
>
> You might try using "ps uax -L" and looking at the various 
> threads involved to see who's running what.

[...]

Its all done as root.  "ps uax -L" shows six rows for myDaemon,
which is about right for the number of threads.

Mike.
--
Michael D. Berger
[e-mail]
http://www.rosemike.net/

[Tim]

On Wed, 2011-11-02 at 17:54 -0400, Michael D. Berger wrote:
> Please pardon me if you see this twice.  I thought that the
> newsgroup and the e-mail list were the same thing, but I now
> see they are not.

Depends which news group you're referring to.  The gmane one does
interact with this list.  There could be a propagation delay, though.