Hi All,

Thanks Richard for the additional link. The information is very useful.

The restore completed successfully in 2.5 hours in the new 2GB box, with the same configuration parameters. I think if I can tweak the parameters a little more, I should be able to get it down to the 1 hr down time that we can afford.

Thanks again for all the help.

Sincerely,
Saranya

Richard Broersma Jr <rabroersma@yahoo.com> wrote:
> Thank you very much for the information. The SHMMAX was set to 33554432, and that's why it
> failed to start the postmaster. Thanks for the link to the kernel resources article. I guess
> changing these parameters would require recompiling the kernel.
>
> Is there any work around without changing these parameters to make maximum use of RAM?
>
> We got a new server now with 2GB RAM, but it also has the same value for SHMMAX.
>
> And I am trying the restore with the following conf
> sort_mem = 40960 (changed from 1024)
> shared_buffers = 3000 (changed from 64)
> max_connections = 128 (changed from 32)

This is one of the best links that I can give you in addition to the Postgresql Kernel resource
link.
http://www.powerpostgresql.com/PerfList

I am pretty much a beginner at resource tuning also. In fact, after googling for sources that
describe how to tune kernel parameters, the postgresql documents remains the best documents I've
found so far.

I would be interested if anyone else on the list knows of any resources or books that have an in
depth discussion on methods/strategies to tune kernel parameters to maximized usage of system
resources and at the same time allow for harmonious sharing between various programs/services.

Regards,

Richard Broersma Jr.



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