diff options
Diffstat (limited to 'src/backend/postmaster/postmaster.c')
| -rw-r--r-- | src/backend/postmaster/postmaster.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c index 41099d9c05d..281b95fe906 100644 --- a/src/backend/postmaster/postmaster.c +++ b/src/backend/postmaster/postmaster.c @@ -10,7 +10,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/postmaster/postmaster.c,v 1.102 1999/02/19 06:06:00 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/postmaster/postmaster.c,v 1.103 1999/02/21 01:41:43 tgl Exp $ * * NOTES * @@ -162,14 +162,15 @@ static IpcMemoryKey ipc_key; * adding to this. */ -static int MaxBackends = MAXBACKENDS; +static int MaxBackends = DEF_MAXBACKENDS; /* - * MaxBackends is the actual soft limit on the number of backends - * we will start. It defaults to the hard limit established at compilation - * time, but can be readjusted with postmaster's xxx switch. - * One reason to reduce MaxBackends is to allow startup under a kernel - * that won't let us get MAXBACKENDS semaphores! + * MaxBackends is the actual limit on the number of backends we will start. + * The default is established by configure, but it can be readjusted + * from 1..MAXBACKENDS with the postmaster -N switch. + * Note that a larger MaxBackends value will increase the size of the + * shared memory area as well as cause the postmaster to grab more + * kernel semaphores, even if you never actually use that many backends. */ static int NextBackendTag = MAXINT; /* XXX why count down not up? */ @@ -641,8 +642,8 @@ usage(const char *progname) fprintf(stderr, "\t-b backend\tuse a specific backend server executable\n"); fprintf(stderr, "\t-d [1|2|3]\tset debugging level\n"); fprintf(stderr, "\t-i \t\tlisten on TCP/IP sockets as well as Unix domain socket\n"); - fprintf(stderr, "\t-N nprocs\tset max number of backend servers (1..%d)\n", - MAXBACKENDS); + fprintf(stderr, "\t-N nprocs\tset max number of backends (1..%d, default %d)\n", + MAXBACKENDS, DEF_MAXBACKENDS); fprintf(stderr, "\t-n \t\tdon't reinitialize shared memory after abnormal exit\n"); fprintf(stderr, "\t-o option\tpass 'option' to each backend servers\n"); fprintf(stderr, "\t-p port\tspecify port for postmaster to listen on\n"); |