[ECOS] Problem with mbufs...

[Stephen Whitaker]

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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