2a) By default, only 4MB of shared memory is supported by BSDI. Keep in
mind that shared memory is not pageable. It is locked in RAM.
-To increase the number of buffers supported by the postmaseter, increase
-SHMMAXPGS by 1024 for every additional 4MB of shared memory:
+To increase the number of buffers supported by the postmaseter, add the
+following to your kernel config file. A SHMMAXPGS value of 1024
+represents 4MB of shared memory. Increase it accordingly:
-/sys/sys/shm.h:69:#define SHMMAXPGS 1024 /* max hardware pages...
+options "SHMMAXPGS=4096"
-The default setting of 1024 is for a maximum of 4MB of shared memory.
+The default is 1024 which allows a maximum of 4MB of shared memory.
For those running 4.1 or later, just recompile the kernel and reboot.
For those running earlier releases, see step 2b.
Next, change SYSPTSIZE to a hard-coded value. Use the bpatch value,
plus add 1 for every additional 4MB of shared memory you desire.
-/sys/i386/i386/i386_param.c:28:#define SYSPTSIZE 0 /* dynamically...
+options "SYSPTSIZE=13"
sysptsize can not be changed by sysctl on the fly.