__FD_SETSIZE question

__FD_SETSIZE question

[Roy Sigurd Karlsbakk]

Hi

I heard the __FD_SETSIZE setting limits the number of open files to a
process... Is this the fact? What happens if I double it?

Thanks

roy
--
from /usr/src/linux/include/linux/posix_types.h

#define __FD_SETSIZE    1024
--
Roy Sigurd Karlsbakk, MCSE, MCNE, CLS, LCA

Computers are like air conditioners.
They stop working when you open Windows.

Re: __FD_SETSIZE question

[Roy Sigurd Karlsbakk]

> It did long ago. Nowdays its limited by proc tunable variables - you do
> however want to use poll() not select()

ok... thanks. That someone mentioned in a discussion about Tux - may I
guess he was mistaken?

roy
--
Roy Sigurd Karlsbakk, MCSE, MCNE, CLS, LCA

Computers are like air conditioners.
They stop working when you open Windows.

Re: __FD_SETSIZE question

[Alan Cox]

> I heard the __FD_SETSIZE setting limits the number of open files to a
> process... Is this the fact? What happens if I double it?

It did long ago. Nowdays its limited by proc tunable variables - you do
however want to use poll() not select()

Re: __FD_SETSIZE question

[Richard B. Johnson]

On Tue, 6 Nov 2001, Roy Sigurd Karlsbakk wrote:

> Hi
> 
> I heard the __FD_SETSIZE setting limits the number of open files to a
> process... Is this the fact? What happens if I double it?
> 
> Thanks
> 
> roy

This just limits the number of fds you can use with select().
Use poll() instead.



Cheers,
Dick Johnson

Penguin : Linux version 2.4.1 on an i686 machine (799.53 BogoMips).

    I was going to compile a list of innovations that could be
    attributed to Microsoft. Once I realized that Ctrl-Alt-Del
    was handled in the BIOS, I found that there aren't any.