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Thread: dbmail-lmtpd memory usage
dbmail-lmtpd memory usage
country flaguser name
United Kingdom		 2008-02-24 12:55:10 

  


  

    

Hi Guys,


 


I'm not sure if this is a cause for concern or 
not.  Our dbmail-lmtpd memory usage just seems to be creeping up and 
up to the extent that our boxes are running out of memory.  It's a fairly 
heavily used mail cluster, so i'm torn between it just out growing its hardware 
or whether there's a possible memory leak in dbmail-lmtpd??


 


One of our boxes running dbmail-lmtpd has died two 
or three times in the past few months and it appears to have been down to memory 
usage.  dbmail-lmtpd seems to always be on top, right now each process of 
dbmail-lmtpd is using approximately 40m-50m RES (Resident) memory, however, at 
times when the machine has exhausted memory, lmtpd has been using up to 130m RES 
per process, is this normal??


 


P.S we're running 2.2.7


 


Kind Regards



 


James Greig

  

  
  
   
     
    

  

    Re:  dbmail-lmtpd memory usage
  


  

     country flaguser name
Italy		
     2008-02-25 04:01:30
  


  

    
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one more potential issue that could affect more than lmtp,
is that if
db_connect in dbmodule.c is called on an already open
connection, no
free is done on the previuos connection.
Although I expect that db_connect is supposed to be called
only once, I
did some tracing and it seems it can get called twice during
program
startup. Not sure at the moment how it ends up being called
more than
once. In any case it could be worthwhile to add a guard to
db_connect.
John

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    Re:  dbmail-lmtpd memory usage
  


  

     country flaguser name
Netherlands		
     2008-02-28 02:17:36
  


  

    
John Fawcett wrote:

> misc.c: 2336 dbmail_iconv_decode_field can get a
non-null pointer
> returned from dbmail_iconv_str_to_utf8 and stored into
tmp_raw, which is
> not freed before tmp_raw is destroyed.

Yep. Looks like a leak to me.

-- 
 
____________________________________________________________
____
  Paul Stevens                                      paul at
nfg.nl
  NET FACILITIES GROUP                     GPG/PGP:
1024D/11F8CD31
  The Netherlands________________________________http://www.nfg.nl
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