Re: [ECOS] Problem with mbufs...

[Stephen Whitaker <whitaker at binarywave dot ca>]

Hi Prem,

It may be possible that this warning is not really a code problem but 
more of a performance issue.  If you stop flooding the target with pings 
and send them normally does the problem still occur?

Later,

Steve

M.PREM KUMAR wrote:

> > Hi,
> >
> >   I updated to latest version of ecos2.0 (16-12-02) taken source from
> > ecoscentric and ported on our custom board (MPC860 based). 
> >   Still we are facing the problems with  mbufs especially when we give
> > flood ping of size 1500 (pkt size). 
> > 	eg. ping -f -s 1500 <ip-addr>   will immediately start giving
> > "warning: eth_recv out of mbufs".
> >
> >  
> > regards
> > prem.
> >
> >
> >
> >
> > On 18 Dec 2002, Gary Thomas wrote:
> >
> >    
> > > On Wed, 2002-12-18 at 09:29, M.PREM KUMAR wrote:
> > >      
> > > > Hi Andrew,
> > > >
> > > > 	I am using ecos version 1.3.1
> > > >        
> > >                   ^^^^^^^^^^^^^^^^^^
> > >
> > > Here's your problem!  This code is terribly old and the network
> > > stack has lots of problems, especially in the area of memory management.
> > >
> > > Update to the latest CVS and your problems will probably go away.
> > >
> > >      
> > > > I made CYG_PKG_MEM_USAGE to double the size of default value. Still
> > > > there was no use.
> > > >
> > > > regards
> > > > prem.	
> > > >  
> > > >
> > > >
> > > >
> > > >
> > > > On Wed, 18 Dec 2002, Andrew Lunn wrote:
> > > >
> > > >        
> > > > > On Wed, Dec 18, 2002 at 06:04:50PM +0500, M.PREM KUMAR wrote:
> > > > >          
> > > > > > Hi Andrew,
> > > > > >
> > > > > > 	First let me thankyou for the information provided.
> > > > > > I am not using latest version of eCos. Is there any bug w.r.t mbufs in
> > > > > > older version?
> > > > > >            
> > > > > Depends on how old, but yes.
> > > > >
> > > > >          
> > > > > > 	Further, I am sorry I couldn't get your question, "Checking of
> > > > > > receiver half of the code is not leaking as well"
> > > > > > 	Can you kindly elaborate it.
> > > > > >            
> > > > > ping sends and receives. You say you have checked eth_drv_tx_done. So
> > > > > you have checked for leaks in mbufs used for transmitting. Have you
> > > > > looked for leaks of mbufs when receiving the ICMP ECHO reply?
> > > > >
> > > > >          
> > > > > > Current value of CYGPKG_NET_MEM_USAGE  is 262144 (Default value). 
> > > > > >            
> > > > > This controls the number of mbufs, clusters and memory pool. See
> > > > > packages/net/tcpip/current/src/ecos/support.c If you want more mbufs,
> > > > > increase this.
> > > > >
> > > > > Also, please CC ecos-discuss@sources.redhat.com
> > > > >
> > > > >      Andrew
> > > > >
> > > > >          
> > > > > > rgds
> > > > > > prem  
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > On Wed, 18 Dec 2002, Andrew Lunn wrote:
> > > > > >
> > > > > >            
> > > > > > > Are you using the latest version of eCos from anoncvs?
> > > > > > >
> > > > > > >              
> > > > > > > > 	I am running ping program on our card (Uses MPC860 as base
> > > > > > > > processor). When trying to send more pings, there is a warning of
> > > > > > > > "eth_recv out of Mbufs" and I am not able to send further pings. Ethernet
> > > > > > > > driver is calling eth_drv_tx_done() properly for freeing resources (in
> > > > > > > > this case
> > > > > > > > mbufs.) 
> > > > > > > >                
> > > > > > > Have you checked that the receiver half of the code is not leaking as
> > > > > > > well?
> > > > > > >
> > > > > > >              
> > > > > > > > I want to give a try by increasing amount of Mbufs. Can anyone tell how
> > > > > > > > to increase the amount of MBufs. Further, if anyone already had a similar
> > > > > > > > problem,  provide with the necessary information to solve. 
> > > > > > > >                
> > > > > > > Increase CYGPKG_NET_MEM_USAGE.
> > > > > > >
> > > > > > >         Andrew
> > > > > > >
> > > > > > >              
> > > > > >            
> > > > > --
> > > > > Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> > > > > and search the list archive: http://sources.redhat.com/ml/ecos-discuss
> > > > >
> > > > >
> > > > >          
> > > > --
> > > > Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> > > > and search the list archive: http://sources.redhat.com/ml/ecos-discuss
> > > >        
> > > --
> > > ------------------------------------------------------------
> > > Gary Thomas                 |
> > > MLB Associates              |  Consulting for the
> > > +1 (970) 229-1963           |    Embedded world
> > > http://www.mlbassoc.com/    |
> > > email: <gary@mlbassoc.com>  |
> > > gpg: http://www.chez-thomas.org/gary/gpg_key.asc
> > > ------------------------------------------------------------
> > >
> > >
> > >      
>
>  


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