Re: How to increat [sic.] max open files?
rdm@tad.micro.umn.edu
7 Jan 1997 19:47:43 -0000
Richard Gooch:
> If you really want the kernel to help in a situation where you have
> 20 000 connections, how about implementing the following:
>
> a system call similar to select(2) or poll(2), except that instead of
> the list of FDs being used for input to the kernel and return from the
> kernel, have the input and return list separate. The return list is
> written in a compact form, such that returned FDs are written in the
> first N entries (where N is the number of returned FDs).
Hrm... there are other alternatives.
[For example, plan9 has a call to read from a set of file descriptors,
using a "random but fair" policy.
Unfortunately, I don't remember the exact name of the call off the top
of my head nor do I remember its exact semantics. However, I have the
impression that it's easier to code into an event loop than select().
--
Raul