Hi,
We are running Lotus Domino R 6.0 on Linux 2.4.18-14 Kernel (Redhat Linux 8.0).
The server crashed with the following messages on the logs.
Thread=[26476:00002-08192]
Stack base=0xBFFFEC7C, Stack size = 9348 bytes
PANIC: Insufficient semaphores to handle number of concurrent owned critical regions. Please reconfigure your kernel.
Stack base = 0xbfffec7c, Stack size = 10852 bytes
Fatal Error signal = 0x0000000b PID/TID = 26476/8192
Wed May 28 01:00:28 Running cleanup script
NSD is in progress …
Please attach the following files to your bug report along with the server log:
Log file : ./nsd_all_Linux_IS-DOMINO_05_28@01_00.log
Domino Halted. Type ‘quit’ to Terminate/Cleanup
Session terminated, killing shell…- Child Terminated from signal 11
Domino Halted. Type ‘quit’ to Terminate/Cleanup …killed.
Hence i just had to restart the server. Can anybody help me, what might have caused the server to crash? Eagerly awaiting your reply.
Regards,
Brian.
Subject: PANIC: Insufficient semaphores to handle number of concurrent owned critical regions.
Given that there is a message regarding this only 4 posts below yours I can only assume that you not only didn’t search the forum you didn’t even look at it!
There are two entire threads on this problem in the forum. Why not try reading them?
Stephen Lister
Subject: RE: PANIC: Insufficient semaphores to handle number of concurrent owned critical regions.
Why don’t YOU try reading them - there are no solutions there!
I would love to find one though - the server went down twice today after several months of being fine.
Subject: RE: PANIC: Insufficient semaphores to handle number of concurrent owned critical regions.
I had this same error for the first time last week (6th Aug) on a W2K Server with SP3 running Domino 6 server which has been fine for several months since being installed. Prior to the crash there were ‘Hardware/OS’ error messages reported in the Notes log. This may not be a Notes problem as such but an OS/Resource/Notes config issue, maybe a memory leak.
We are looking at increasing the RAM to 2gb as this seems to be a better fit for what the system recommends as a ‘page file size’. To try to resolve this error we have also put the following settings in notes.ini: -
Set SERVER_SESSION_TIMEOUT to 60
Set NSF_DBCACHE_MAXENTRIES to 1872 (max setting)
Set SERVER_MAX_SESSIONS to peak users +50
Set BUFFER_POOLSIZE to 25% of RAM, i.e. 256 (to be increased when additional RAM is installed)
Origianlly the server was spec’d with 2 CPU’s but got delivered woth only one. The second CPU is not yet installed but will be soon.
Hopefully the problem will not ocurr again but if it does I’ll be back…