Re: best practice maximum number of OS processes
- From: De DBA <dedba@xxxxxxxxxx>
- To: Josh.Collier@xxxxxxxxxxxx
- Date: Thu, 13 Jun 2013 09:25:17 +1000
No, that sounds quite silly to me. As an example, my workstation (admittedly
Debian Squeeze 64bit, not Redhat, but otherwise quite comparable) runs
currently 282 processes on only 2 cores. This provides perfect performance. Of
the 282 processes, 133 are root (system) processes, providing various essential
services. Restricting the OS to 8 * cores processes (=16 in my case) would make
it impossible to run the OS, let alone user programs.
Perhaps they refer to the run queue, rather than the total number of processes?
Hth,
Tony
On 13/06/13 08:35, Josh Collier wrote:
> Hi,
> I am trying to validate the following statement for red hat linux 64bit 5.4,
> 11.2.0.2:
>
> It is a best practice to limit the number of operating system processes to no
> more than 8 times the number of CPU cores
>
>
> Does this sound reasonable? This would mean on a 32 core system I would be
> limited to no more 256 processes to serve my queries. In a partitioned data
> warehouse.
>
> Thanks for your time,
>
> JoshC.
>
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