RE: [ECOS] Stall in Ethernet Stack

["Richard Rauch" <Richard dot Rauch at vipa dot de>]

Thanks for your hint. The stack works now better, but It seems, that there
are more than one problem!

We have following outputs from the stack:

"DEBUG: Circular MBUF 0x204a3500!"
"PANIC: eth_drv_send: no header mbuf"

This happens every few minutes only with a very fast PC as communication
partner.
When this happens, the communication hangs a while, but is continued after
timeout.

Richard


-----Original Message-----
From: ecos-discuss-owner@ecos.sourceware.org
[mailto:ecos-discuss-owner@ecos.sourceware.org]On Behalf Of Steve West
Sent: Dienstag, 5. Oktober 2004 14:02
To: Richard Rauch; ecos-discuss@sources.redhat.com
Subject: Re: [ECOS] Stall in Ethernet Stack


I had a similar problem. I put a mutex around zalloci() & zfreei() in
support.c.

Steve



----- Original Message -----
From: "Richard Rauch" <Richard.Rauch@vipa.de>
To: <ecos-discuss@sources.redhat.com>
Sent: Tuesday, October 05, 2004 5:40 AM
Subject: [ECOS] Stall in Ethernet Stack


> Hi All,
>
> we have a problem with the Ethernet Stack (FreeBSD).
> We have heavy communication load on Ethernet. After a while the stack
hangs.
> It looks like, that events inside the stack are lost.
> We changed some default values from the stack configuration, because we
need
> some more sockets (about 30).
> We found, when we are increasing the Value "Number of supported pending
> network events", then the stacks works better.
> But when we have connections over several sockets at the same time with
> communication load, then the stack hangs again.
> What is the functionality behind this Parameter. How we have to calculate
> the correct value?
> Is our problem only, that the value of this parameter is to small, or is
the
> problem somerwhere else inside the stack?
>
>
> Thanks in advance
>
> Richard
>
>
>
> --
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> and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
>


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