Experimental Physics and
Industrial Control System

"Paul Sichta" <[email protected]> · Mon, 30 Jul 2001 11:34:30 -0400

Robert,
I had this problem a few years ago,  and Andrew Johnson
provided a solution,  which actually worked!  :}

-ps

From: Andrew Johnson <[email protected]>
Date: Fri, 03 Sep 1999 14:38:10 -0500
Subject: Re: IOC CA client limit?
Message-ID: <[email protected]>

Paul Sichta wrote:
>
> When I connect more than about 24 CA clients to my IOC
they don't connect
> and I get the errors shown below (IOC console display
first,  medm error on
> workstation below that).   spy  shows the CPU is ~90% idle
and   memShow
> shows ~20Mbytes free.  Is there a numerical-limit on how
many clients the
> server will accept ?
>
> IOC>0x1b23070 (CA TCP): CAS: Client accept error
> S_iosLib_TOO_MANY_OPEN_FILESf

There is a numerical limit on the number of open files, and
each TCP/IP
socket is an open file.  You can increase this by rebuilding
your vxWorks
boot image.  Edit <tornado>/target/config/all/configAll.h
and change the
#define NUM_FILES from 50 to something larger - we use 150
here at APS.
Save, then run make in the config/<arch> directory to
rebuild the vxWorks
image and reboot.

- Andrew

--Paul SichtaPrinceton Plasma Physics Laboratory609-243-3477
FAX 3030

----- Original Message -----
From: "Robert Willson" <[email protected]>
To: "tech talk" <[email protected]>
Sent: Monday, July 30, 2001 10:43 AM
Subject: Error Message

>
> I have very recently been receiving this error message
from my IOC, which
> repeats every few seconds:
>
> 0x758828 (CA TCP): CAS: Client accept error was
"S_iosLib_TOO_MANY_OPEN_FILES"
>
> I can still run with this error, but I would like to know
what might have
> caused it.
>
> IOC is MV167, EPICS v.3.13.2, VxWorks v.5.2
>
> -Robert Willson
> [email protected]
>
>
>
>
>

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System