If the IRQ is delayed, I don't understand the following situation
with a periodic task :
A periodic task is running under RTL3.0-2.2.19 on a Pentium-II board with integrated
ethernet chip (Intel PRO/100+).
The task is setup to run every 3ms with a runtime of approx. 300us. As long as there is
no traffic on the network part where the board is attached to, the start time and run
time of
the task is stable.
As soon as the ethernet load on the LAN segment gets more heavy, the start time of
the task varies around 250us and the run time of the task varies around 100us.
The traffic on the LAN does not belong to my board, it's a file transfer between
to other nodes on the network.
The driver for the ethernet chip is loaded as a linux driver (not a RTL driver).
What can I do to get stable start and run time of the task ?
Do I have to disable the interrupt of the chip while my RT task is running or is
this done automatically by RT-Linux when my RT task gets active ?
Oliver
-------- Original Message --------
Subject: Re: [rtl] RTLinux IRQ handler (19-Feb-2002 18:37)
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
> Delayed.
>
> On Tue, Feb 19, 2002 at 12:34:46PM -0500, [EMAIL PROTECTED] wrote:
> > Suppose you have a rtlinux thread running and a hard irq is raised, which
> > is not handled by rtlinux but by the linux system, is the linux irq handler
> > activated immediatly, or is it delayed until the linux kernel gets
> > activated again?
> >
> > Thanks in advance
> >
> > Damien GUIHAL
> > Nantes France
> > --
> >
> >
> >
> >
> > __________________________________________________________________
> > Your favorite stores, helpful shopping tools and great gift ideas.
> > Experience the convenience of buying online with Shop@Netscape! http://
> > shopnow.netscape.com/
> >
> > Get your own FREE, personal Netscape Mail account today at http://webmail.
> > netscape.com/
> >
> > -- [rtl] ---
> > To unsubscribe:
> > echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR
> > echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED]
> > --
> > For more information on Real-Time Linux see:
> > http://www.rtlinux.org/
>
> --
> ---------------------------------------------------------
> Victor Yodaiken
> Finite State Machine Labs: The RTLinux Company.
> www.fsmlabs.com www.rtlinux.com
>
> -- [rtl] ---
> To unsubscribe:
> echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR
> echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED]
> --
> For more information on Real-Time Linux see:
> http://www.rtlinux.org/
>
To: [EMAIL PROTECTED]
[EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
-- [rtl] ---
To unsubscribe:
echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR
echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED]
--
For more information on Real-Time Linux see:
http://www.rtlinux.org/
