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Networking: Still waiting for mbuf cluster
- Date: Fri, 24 Oct 2003 19:39:17 +0200
- From: mmarkov at dkts.co.yu (Mirko Markov)
- Subject: Networking: Still waiting for mbuf cluster
Rolf Schroedter wrote:
> My RTEMS application communicates with a Linux-PC via connectionless
> UDP socket,
> receiving and replying UDP packets every ~20 milliseconds.
> After a few minutes the application stops communicating.
> The application is still running, but no more UDP packets are received.
> From time to time a message is displayed at the console:
> "Still waiting for mbuf cluster."
> With [ethereal] I see that correct UDP packets are coming from the PC.
> Additionally the PC is sending ARP requests:
> "Who has 192.168.0.100 ? Tell 192.168.0.1"
> which are also not answered by RTEMS.
> What does this mean ?
> How can the UDP communication be restarted ?
> Any suggestions are highly appreciated.
Try to configure larger number of mbufs and mbuf clusters in
You may have to enlarge heap size, also.