Hi.
I think that a calculation sheet will be made.
However, calculation does not suitable.:-(
It is this.(8.2.5 Default-FreeBSD)
--
max_locks_per_transaction 64
max_connections 40
max_prepared_transactions 5
shared_buffers 28MB
wal_buffers 64kB
max_fsm_relations 1000
max_fsm_pages 179200
inet% ipcs -b -m
Shared Memory:
T ID KEY MODE OWNER GROUP SEGSZ
m 917504 5432001 --rw------- saito wheel 32571392
40*(400+270*64)= 7072005*(600+270*64)= 89400 28MB= 29360128 64kB= 65536 1000*70= 70000
179200*6= 1075200
Total :31367464
ipcs-m:32571392 -1203928 (difference is large: why?)
Table 16-2. Configuration parameters affecting PostgreSQL's shared memory usage
http://www.postgresql.org/docs/8.2/static/kernel-resources.html#SYSVIPC
It may be the bug of postgres or whether the document is wrong....
or My misapprehension.
Can someone see a near value?
Regards,
Hiroshi Saito
