Re: Scalable postgresql using sys_epoll

On Wed, 10 Mar 2004, Shachar Shemesh wrote:

> >IBM has rewritten their Domino database system to use the new
> >sys_epoll call available in the Linux 2.6 kernel.
> >
> >Would Postgresql benefit from using this API? Is anyone looking at
> >this?

> I'm not familiar enough with the postgres internals, but is using
> libevent (http://monkey.org/~provos/libevent/) an option? It uses state
> triggered, rather than edge triggered, interface, and it automatically
> selects the best API for the job (epoll, poll, select). I'm not sure
> whether it's available for all the platforms postgres is available for.

libevent is cool, but postgres uses a process-per-client
model, so the number of file descriptors of active interest
to a backend at any given time is low.

Matthew.