shm problems 🔗 link

I'm having memory problems when launching Hobbit on Solaris 9. 

Initially the error in /var/log/hobbit/hobbitlaunch.log is "Could not attach
shm Too many open files", and then later becomes "Could not attach shm
Permission denied". If I then close all hobbit processes and look at
/usr/bin/ipcs I see six shared-memory listings and six semaphore listings. I
can clean these out with ipcrm, but then when I restart hobbit the same set
of symptoms recur. I have appended some logs below, generated with the
hobbitlaunch.cfg --debug switch on.

No processes other than hobbitlaunch ever start up, and no log files other
than hobbitlaunch.log appear. There are plenty of resources available on the
Hobbit server (disk, RAM, swap). 

Thanks in advance for your consideration,

David Mostardi
Advisory Systems Manager
Elsevier MDL 
2440 Camino Ramon, Suite XXX
San Ramon CA XXXXX
XXX.XXX.XXXX
www.mdl.com <www.mdl.com> 


"Could not attach shm Too many open files"

2006-08-22 15:32:38 hobbitlaunch starting
2006-08-22 15:32:38 Loading tasklist configuration from
/usr/local/bb/bb1.9i-btf/etc/hobbitlaunch.cfg
2006-08-22 15:32:38 Loading hostnames
2006-08-22 15:32:38 Opening file /usr/local/bb/bb1.9i-btf/etc/bb-hosts
2006-08-22 15:32:38 Opening file
/usr/local/bb/bb1.9i-btf/etc/client-local.cfg
2006-08-22 15:32:38 Loading saved state
2006-08-22 15:32:38 Cannot access checkpoint file
/usr/local/bb/bb1.9i-btf/tmp/hobbitd.chk for restore
2006-08-22 15:32:38 Setting up network listener on 0.0.0.0:1984
2006-08-22 15:32:38 Setting up signal handlers
2006-08-22 15:32:38 Setting up hobbitd channels
2006-08-22 15:32:38 Setting up status channel (id=1)
2006-08-22 15:32:38 calling ftok('/usr/local/bb/bb1.9i-btf',1)
2006-08-22 15:32:38 ftok() returns: 0x1007F5B
2006-08-22 15:32:38 shmget() returns: 0x65
2006-08-22 15:32:38 Setting up stachg channel (id=2)
2006-08-22 15:32:38 calling ftok('/usr/local/bb/bb1.9i-btf',2)
2006-08-22 15:32:38 ftok() returns: 0x2007F5B
2006-08-22 15:32:38 shmget() returns: 0x66
2006-08-22 15:32:38 Setting up page channel (id=3)
2006-08-22 15:32:38 calling ftok('/usr/local/bb/bb1.9i-btf',3)
2006-08-22 15:32:38 ftok() returns: 0x3007F5B
2006-08-22 15:32:38 shmget() returns: 0x67
2006-08-22 15:32:38 Setting up data channel (id=4)
2006-08-22 15:32:38 calling ftok('/usr/local/bb/bb1.9i-btf',4)
2006-08-22 15:32:38 ftok() returns: 0x4007F5B
2006-08-22 15:32:38 shmget() returns: 0x68
2006-08-22 15:32:38 Setting up notes channel (id=5)
2006-08-22 15:32:38 calling ftok('/usr/local/bb/bb1.9i-btf',5)
2006-08-22 15:32:38 ftok() returns: 0x5007F5B
2006-08-22 15:32:38 shmget() returns: 0x69
2006-08-22 15:32:38 Setting up enadis channel (id=6)
2006-08-22 15:32:38 calling ftok('/usr/local/bb/bb1.9i-btf',6)
2006-08-22 15:32:38 ftok() returns: 0x6007F5B
2006-08-22 15:32:38 shmget() returns: 0x6A
2006-08-22 15:32:38 Setting up client channel (id=7)
2006-08-22 15:32:38 calling ftok('/usr/local/bb/bb1.9i-btf',7)
2006-08-22 15:32:38 ftok() returns: 0x7007F5B
2006-08-22 15:32:38 shmget() returns: 0x4B7
2006-08-22 15:32:38 Could not attach shm Too many open files
2006-08-22 15:32:38 Cannot setup client channel
2006-08-22 15:32:43 Task hobbitd terminated, status 1

"Could not attach shm Permission denied"

2006-08-22 15:28:15 Loading hostnames
2006-08-22 15:28:15 Opening file /usr/local/bb/bb1.9i-btf/etc/bb-hosts
2006-08-22 15:28:15 Opening file
/usr/local/bb/bb1.9i-btf/etc/client-local.cfg
2006-08-22 15:28:15 Loading saved state
2006-08-22 15:28:15 Cannot access checkpoint file
/usr/local/bb/bb1.9i-btf/tmp/hobbitd.chk for restore
2006-08-22 15:28:15 Setting up network listener on 0.0.0.0:1984
2006-08-22 15:28:15 Setting up signal handlers
2006-08-22 15:28:15 Setting up hobbitd channels
2006-08-22 15:28:15 Setting up status channel (id=1)
2006-08-22 15:28:15 calling ftok('/usr/local/bb/bb1.9i-btf',1)
2006-08-22 15:28:15 ftok() returns: 0x1007F5B
2006-08-22 15:28:15 shmget() returns: 0x1
2006-08-22 15:28:15 Could not attach shm Permission denied
2006-08-22 15:28:15 Cannot setup status channel
2006-08-22 15:28:20 Task hobbitd terminated, status 1

On Wed, Aug 23, 2006 at 12:21:09AM +0100, Mostardi, David  (MDL US) wrote:

This usually means you have to tune the kernel parameters. See
http://docs.sun.com/app/docs/doc/817-1759/6mhfh76fr?a=view for shared
memory settings, and
http://docs.sun.com/app/docs/doc/817-1759/6mhfh76fq?a=view for semaphore
settings.

I really cannot see any other explanation than this shared memory
segment already existing, and created by another user on the system.
If you shutdown Hobbit, and then - as root - run the "ipcs -m" command,
what does it say ? Note that you must run it as root, because if you
run it as the hobbit user it will only show its own IPC ressources,
not those owned by others.


Regards,
Henrik