Index: doc/src/sgml/runtime.sgml
===================================================================
RCS file: /home/projects/pgsql/cvsroot/pgsql/doc/src/sgml/runtime.sgml,v
retrieving revision 1.59
diff -c -r1.59 runtime.sgml
*** doc/src/sgml/runtime.sgml 2001/05/01 03:00:28 1.59
--- doc/src/sgml/runtime.sgml 2001/05/02 16:58:24
***************
*** 1449,1455 ****
SHMMAX>>
Maximum size of shared memory segment (bytes)>
! 512 kB + 8192 * buffers + extra ... infinity
--- 1449,1455 ----
SHMMAX>>
Maximum size of shared memory segment (bytes)>
! 700 kB + 8192 * buffers + extra ... infinity
***************
*** 1459,1464 ****
--- 1459,1470 ----
+ SHMALL>>
+ Total amount of shared memory available (bytes or pages)>
+ if bytes, same as SHMMAX; if pages, ceil(SHMMAX/PAGE_SIZE)>
+
+
+
SHMSEG>>
Maximum number of shared memory segments per process>
only 1 segment is needed, but the default is much higher>
***************
*** 1588,1629 ****
By default, only 4 MB of shared memory is supported. Keep in
mind that shared memory is not pageable; it is locked in RAM.
! The shared memory parameters are:
!
! #define SHMMAX /* max shared memory segment size (bytes) */
! #define SHMMIN /* min shared memory segment size (bytes) */
! #define SHMMNI /* max number of shared memory identifiers */
! #define SHMSEG /* max shared memory segments per process */
! #define SHMALL /* max amount of shared memory (pages) */
!
!
! To increase the number of buffers supported by the postmaster, add the
! following to your kernel config file. A SHMALL> value of 1024
! represents 4MB of shared memory. Increase it accordingly:
! options "SHMALL=4096"
options "SHMMAX=\(SHMALL*PAGE_SIZE\)"
! For those running 4.1 or later, just recompile the kernel and
! reboot. For those running earlier releases, use
! bpatch> to find the sysptsize> value
! for the current kernel. This is computed dynamically at
! bootup.
$ bpatch -r sysptsize>
0x9 = 9>
! Next, change SYSPTSIZE> to a hard-coded value. Use
! the bpatch value, plus add 1 for every additional 4 MB of
shared memory you desire.
! options "SYSPTSIZE=13"
! sysptsize> can not be changed by sysctl on the fly.
--- 1594,1630 ----
By default, only 4 MB of shared memory is supported. Keep in
mind that shared memory is not pageable; it is locked in RAM.
!
! To increase the number of shared buffers supported by the
! postmaster, add the following to your kernel config file. A
! SHMALL> value of 1024 represents 4MB of shared
! memory. The following increases the maximum shared memory area
! to 32 MB:
! options "SHMALL=8192"
options "SHMMAX=\(SHMALL*PAGE_SIZE\)"
! For those running 4.1 or later, just make the above changes,
! recompile the kernel, and reboot. For those running earlier
! releases, use bpatch> to find the
! sysptsize> value in the current kernel. This is
! computed dynamically at bootup.
$ bpatch -r sysptsize>
0x9 = 9>
! Next, add SYSPTSIZE> as a hard-coded value in the
! kernel config file. Increase the value you found using
! bpatch>. Add 1 for every additional 4 MB of
shared memory you desire.
! options "SYSPTSIZE=16"
! sysptsize> can not be changed by sysctl.
***************
*** 1635,1651 ****
-
- The defaults are in /sys/sys/sem.h>:
-
- #define SEMMNI 10 /* # of semaphore identifiers */
-
- #define SEMMNS 60 /* # of semaphores in system */
-
- #define SEMUME 10 /* max # of undo entries per process */
-
- #define SEMMNU 30 /* # of undo structures in system */
-
Set the values you want in your kernel config file, e.g.:
options "SEMMNI=40"
--- 1636,1641 ----