diff options
| -rw-r--r-- | src/backend/port/sysv_shmem.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/src/backend/port/sysv_shmem.c b/src/backend/port/sysv_shmem.c index 01385032740..3b5df03c1c1 100644 --- a/src/backend/port/sysv_shmem.c +++ b/src/backend/port/sysv_shmem.c @@ -10,7 +10,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/port/sysv_shmem.c,v 1.57 2010/07/06 19:18:57 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/port/sysv_shmem.c,v 1.57.2.1 2010/08/25 20:10:59 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -135,7 +135,13 @@ InternalIpcMemoryCreate(IpcMemoryKey memKey, Size size) } /* - * Else complain and abort + * Else complain and abort. + * + * Note: at this point EINVAL should mean that either SHMMIN or SHMMAX + * is violated. SHMALL violation might be reported as either ENOMEM + * (BSDen) or ENOSPC (Linux); the Single Unix Spec fails to say which + * it should be. SHMMNI violation is ENOSPC, per spec. Just plain + * not-enough-RAM is ENOMEM. */ ereport(FATAL, (errmsg("could not create shared memory segment: %m"), @@ -157,7 +163,9 @@ InternalIpcMemoryCreate(IpcMemoryKey memKey, Size size) (unsigned long) size, NBuffers, MaxBackends) : 0, (errno == ENOMEM) ? errhint("This error usually means that PostgreSQL's request for a shared " - "memory segment exceeded available memory or swap space. " + "memory segment exceeded available memory or swap space, " + "or exceeded your kernel's SHMALL parameter. You can either " + "reduce the request size or reconfigure the kernel with larger SHMALL. " "To reduce the request size (currently %lu bytes), reduce " "PostgreSQL's shared_buffers parameter (currently %d) and/or " "its max_connections parameter (currently %d).\n" |