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Thread: PostgreSQL and Linux CPU's

PostgreSQL and Linux CPU's

From
Sbob
Date:
All;


I am looking for information on how PostgreSQL leverages or interfaces 
with CPU's on Linux. Does PostgreSQL let Linux do the work? Does it 
bypass the OS? Any information or docs you can send my way would be much 
appreciated.


Thanks in advance

Re: PostgreSQL and Linux CPU's

From
"David G. Johnston"
Date:
On Thu, Jan 20, 2022 at 4:22 PM Sbob <sbob@quadratum-braccas.com> wrote:
I am looking for information on how PostgreSQL leverages or interfaces
with CPU's on Linux. Does PostgreSQL let Linux do the work? Does it
bypass the OS? Any information or docs you can send my way would be much
appreciated.


PostgreSQL is a user land process in Linux.  Linux doesn't allow itself to be bypassed by user land processes when dealing with the CPU.  That is kind of its main reason for existing...

PostgreSQL uses a process forking model and each process runs on a single thread.

You can probably verify all of that by perusing the PostgreSQL documentation.  Don't know what to recommend regarding Linxu, user land, kernel mode, and CPUs...

David J.