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Re: [lwip-users] memp_malloc: out of memory in pool TCP_PCB


From: Simon Goldschmidt
Subject: Re: [lwip-users] memp_malloc: out of memory in pool TCP_PCB
Date: Fri, 4 Nov 2011 11:45:23 +0100

Anirudha Sarangi <address@hidden> wrote:

memp_malloc: out of memory in pool TCP_PCB
 
Inspite of these messages webserver works. But these messages are really annoying and tell us that something horrible has happened.

No, that's normal: you ran out of pcbs, but the tcp code then closes that oldest pcb in TIME-WAIT state and then calls memp_malloc again, which then succeeds. This is why the web server continues to run normally.

In tcp, pcbs stay in TME_WAIT state for some minutes, so you would have to configure the tcp pcb pool very large to get rid of this message.

Simon

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