Re: Invalid memory alloc

On 23-04-2015 16:55, Marc-André Goderre wrote:
> Hello, I'm processing  a 100Million row table.
> I get error message about memory and I'ld like to know what can cause this issue.
>
> ...
> psql:/home/ubuntu/create_topo.sql:12: NOTICE:  104855000 edges processed
> psql:/home/ubuntu/create_topo.sql:12: NOTICE:  104856000 edges processed
> psql:/home/ubuntu/create_topo.sql:12: NOTICE:  104857000 edges processed
> psql:/home/ubuntu/create_topo.sql:12: NOTICE:  invalid memory alloc request size 1677721600
> psql:/home/ubuntu/create_topo.sql:12: NOTICE:  UPDATE public.way_noded SET source = 88374866,target = 88362922 WHERE
id=  142645362 
>   pgr_createtopology
> --------------------
>   FAIL
> (1 row)
>
> The server  has a 10Gb of shared_buffer.
> Do you thing this quantity of memory allowed should normaly be enough to process the data?
>
> Thanks
> Marc
>
>
My question would sound stupid... you have 10Gb shared buffer, but how
much physical memory on this server?
How have you configured the kernel swappines, overcommit_memoryt,
overcommit_ratio?
Have you set anything different in shmmax or shmall?

Edson