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SubjectRe: voluntary-preempt-2.6.8.1-P1 seems to lose UDP messages.
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On Wed, 2004-08-18 at 07:10, P.O. Gaillard wrote:
> Hello,
>
> I have a real-time application that transmits 20 MBytes/s over UDP/Gigabit
> Ethernet between 2 PCs.

> But when I use the voluntary-preemt-2.6.8.1-P1 patch on the receiving PC, the
> app starts complaining about lost messages.

It sounds like you need to set the network card irq to be non-threaded.
What is the output of:

root@mindpipe:/home/rlrevell/kernel-source/linux-2.6.8.1-P3# find
/proc/irq/ -name threaded -print -a -exec cat {} \;
/proc/irq/15/ide1/threaded
1
/proc/irq/14/ide0/threaded
1
/proc/irq/12/uhci_hcd/threaded
1
/proc/irq/11/eth0/threaded
1
/proc/irq/11/uhci_hcd/threaded
1
/proc/irq/10/EMU10K1/threaded
0
/proc/irq/10/uhci_hcd/threaded
1
/proc/irq/8/rtc/threaded
0
/proc/irq/1/i8042/threaded
1

You probably want all of these to be 1 except ethX.

Lee

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