Re: [Devil-Linux-discuss] [BULK] Re: [BULK] Re: RAM Usage

[Frank W. <Fra...@ct...>]

Hi John,

I restart snmpd more or less once a week. Once a month is definately not=20
enough for some of mine (presumably those that run ipsec tunnels)

Regards,

=46rank

On Wednesday 07 November 2007 11:27:41 John Jore wrote:
> Frank,
> Thank you very much for this. My DL box was having problems last night and
> a reboot solved it. and it was low on memory with INIT constantly
> re-spawning. And I too use net-snmpd.
>
> In your experience, was it enough to restart snmpd and would adding this =
to
> a cron job once a month potentially be enough to avoid restarting the
> entire DL?
>
>
> Regards,
> John Jore
>
>
>
> ________________________________________
> From: dev...@li...
> [dev...@li...] On Behalf Of Frank We=
is
> [Fra...@ct...] Sent: 07 November 2007 07:28
> To: dev...@li...
> Subject: Re: [Devil-Linux-discuss] [BULK] Re:  RAM Usage
>
> On Tuesday 06 November 2007 20:28:07 Serge Leschinsky wrote:
> > Hi Matthew,
> >
> > Matthew Hattersley wrote:
> > > We have around 150 DL boxes out in the wild now, and there may be a
> > > small problem that keeps happening. Under heavy load the boxes will
> > > start running low on RAM, at which point we get malloc errors for some
> > > daemons running on the unit. First thing to go is usual snmpd, which
> > > isn't a major issue. But further down the line we start loosing things
> > > like ssh, and in some cases even more crtical processes.
> >
> > That's weird! I've just finished troubleshooting of terrible memory lea=
ks
> > in our application (not DL related) and faced that net-snmp 5.4.0 eats
> > memory with greate speed (especially libsnmp). The release notes for
> > 5.4.1 show that some leaks were fixed in 5.4.1 (  [BUG 1619827],[PATCH
> > 1616912], [PATCH 1592706]). I think we may update net-snmp to 5.4.1 but
> > I've not checked yet if the update really solves our problem (and I can=
't
> > guarantee it solves your problem).
>
> I can confirm the memory leakage in net-snmpd. At the time I discovered it
> I googled around a bit, and it seemed to be a well known problem with
> net-snmpd.
>
> snmpd eats up to 90% of memory on my DLs (256 MB RAM), and then stuff
> starts to fail. I obviously notice it when ssh fails.
>
> As a workaround, I just restart snmpd on all my DLs every once in a
> while.... MRTG handles this nicely, and I don't loose to much information.
>
> It looks like the problem occurs mostly/sooner on boxes that run ipsec
> tunnels too.
>
> Matthew: wow, 150 DLs. How do you manage them?
>
> Have a nice day,
>
> Frank
> --
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=2D-=20
_______________________________________________
 Centre de Technologie de l'Education
 29 avenue John F. Kennedy
 L-1855 Luxembourg-Kirchberg
 email: Fra...@ct...
 t=E9l.: +352 478-5973
 fax: +352 333797
 _______________________________________________