"Hiroshi Saito" <z-saito(at)guitar(dot)ocn(dot)ne(dot)jp> writes:
> 40*(1800+270*64)= 763200
> 5*(700+270*64)= 89900
> 28MB=29360128
> 64kB= 65536
> 1000*70= 70000
> 179200*6= 1075200
> 700kB= 716800
> Total :32140764
> ipcs-m:32571392
> -430628
> I think it is a permissible range. Thanks!
Most of the remaining discrepancy is because you did not account for the
per-shared-buffer management overhead. The table shows shared_buffers
as costing 8300 bytes each, not 8192.
regards, tom lane