Spinlock error

Hi folks,

I got a problem with a production database, it's a little
busy with 2 to 5 queries per second.

Running on Redhat 6.0, 2.2.5-15 SMP (intel)

Currently thre are 128 backends ( postmaster -N 128 )
with share mem set at 256.

in pg_options verbose = 2, syslog = 2,

here are the errors..

FATAL: s_lock(4001404d) at spin.c:125, stuck spinlock. Aborting.

After those spinlock errors the postmaster died.... I tries to start it
back up and it failed with this error.

FindExec: found "/usr/bin/postgres" using argv[0]
IpcMemoryCreate: shmget failed (Identifier removed) key=5432010,
size=120, permission=700
IpcMemoryIdGet: shmget failed (Identifier removed) key=5432010, size=120,
permission=0
IpcMemoryAttach: shmat failed (Invalid argument) id=-2
FATAL 1: AttachSLockMemory: could not attach segment
proc_exit(0) [#0]
shmem_exit(0) [#0]
exit(0)

Since this is a production database, what are teh first steps i should
take ?

======================================================
Jeff MacDonald
jeff(at)pgsql(dot)com irc: bignose on EFnet
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