TCP/IP problem : 'Still waiting for mbuf cluster'

Sylvain Prestavoine sylvain.prestavoine at
Wed Sep 13 15:42:05 UTC 2006

----- Original Message ----- 
From: "Sergei Organov" <osv at>
To: <rtems-users at>
Sent: Wednesday, September 13, 2006 4:44 PM
Subject: Re: TCP/IP problem : 'Still waiting for mbuf cluster'

> When client reads the data fast, your RTEMS app doesn't use all the
> memory configured for socket buffers, I think, thus it continues to work
> even though the socket buffer size limit is high.
> -- Sergei.

Thanks for this remark.
In this case, if I decrease SND_BUF, is it to avoid the initial problem (
mbuff allocation) ?
I am afraid that problem put back later...

Do you think so too ?


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