[leafnode-list] Memory leak (Was: Limiting leafnode run time and/or memory usage?)

[Lloyd Zusman]

One more thing: this occurs under Linux ...

  % uname -sr
  Linux 2.4.20-021stab022.8.777-enterprise

I don't see this problem under FreeBSD.


On Sun, Dec 26, 2004 at 01:17:25PM -0500, Lloyd Zusman wrote:
> I have more information about this issue (see below).
> 
> There appears to be a significant memory leak in leafnode-20041215a.
> 
> I'm running this in a local-group-only configuration.  Every time I
> issue a "group local.newsgroup" command from within an nntp session,
> the leafnode process grabs around 320,000 bytes of memory that it
> never releases. This is consistent: each and every time I issue that
> command, the memory footprint of the leafnode process increases by
> this amount.  This has continued all the way up to 256 meg.
> 
> I can hack my way around this problem by putting the following line
> within the xinetd "service" block quoted at the bottom of this
> message.
> 
>   rlimit_as  4M
> 
> However, this is not an optimal solution, because it could cause
> leafnode to die in the middle of processing a command, thereby
> causing users to receive error messages.  The ideal solution is to
> fix the memory leak, of course.
> 
> I thought I'd report this here.  I'll try to find this leak, but it
> might take me a while because it's been years since I have dug
> through the leafnode code.  Someone else with more familiarity with
> the source to leafnode would probably be able to diagnose and fix
> this more quickly.
> 
> 
> 
> On Sun, Dec 26, 2004 at 07:13:32AM -0500, Lloyd Zusman wrote:
> > Is there a way to ensure that leafnode doesn't eat up too much memory?
> > 
> > I'm using leafnode-20041215a, and I have the following xinetd entry
> > for starting up leafnode (see below), but the daemon appears to
> > remain running, even when there is no nntp activity.  As time goes
> > on and nntp requests are being made, leafnode consumes more and more
> > memory until it holds up to 256 meg.
> > 
> > Is there a way to start up leafnode so that it doesn't remain
> > running all the time, or so that it doesn't keep consuming more and
> > more memory?
> > 
> > Thanks in advance.
> > 
> > Here's my xinetd entry for starting leafnode:
> > 
> >   # default: on
> >   # description: The leafnode NNTP service.
> > 
> >   service nntp
> >   {
> >         socket_type = stream
> >         protocol    = tcp
> >         wait        = no
> >         user        = news
> >         server      = /usr/local/sbin/leafnode
> >   }
> > 
> > 
> > -- 
> >  Lloyd Zusman
> >  ljz at asfast.com
> >  God bless you.
> > -- 
> > _______________________________________________
> > leafnode-list mailing list
> > leafnode-list at dt.e-technik.uni-dortmund.de
> > http://www.dt.e-technik.uni-dortmund.de/mailman/listinfo/leafnode-list
> > http://leafnode.sourceforge.net/
> 
> -- 
>  Lloyd Zusman
>  ljz at asfast.com
>  God bless you.
> -- 
> _______________________________________________
> leafnode-list mailing list
> leafnode-list at dt.e-technik.uni-dortmund.de
> http://www.dt.e-technik.uni-dortmund.de/mailman/listinfo/leafnode-list
> http://leafnode.sourceforge.net/

-- 
 Lloyd Zusman
 ljz at asfast.com
 God bless you.