On Wed, 2007-05-09 at 14:05 +0000, Erich Titl wrote:
> 
> Brad Langhorst wrote:
> > I have a bering ulibc firewall running shorwall and ipsec.
> > 
> > It's badly leaking memory.
> > see:
> > https://development.coopmetrics.coop/munin/mcgruff/mcgruff.html
> > 
> > you can see that it leaks pretty hard during the nightly backups.
> > 
> > i have to reboot every few days or the machine runs out of ram and
> > becomes unstable.
> > 
> > The bad news is that this machine is in production, and i can't take it
> > down any time soon.  
> > 
> > I'm pretty sure that it's ipsec related because i don't lose memory when
> > doing a big scp transfer NOT via the vpn.
> > 
> > Removing the ipsec modules does not free up the ram.
> > 
> > Any ideas?
> > Anybody seen this problem before?
> 
> Not before, but awoken by your message I looked at my freshly installed
> ipsec installation and yes, from the looks of it it appears to leak.
> 
> Can you tell us if this is traffic related, e.g. are you leaking more if
> there is heavy traffic as opposed to just open tunnels?
> 
> What release is this related to?

it is certainly related the the traffic... more with more traffic.
if you have a look at those graphs you can see the free memory decreases
in steps where there is a lot of traffic over ipsec0.

i thought I mentioned the release... sorry
LEAF Bering-uClibc 3.0 Rev 5 uClibc 0.9.28 

I did upgrade the ipsec package recently hoping for a fix
mcgruff# apkg -l ipsec
ipsec 2.4.7 Rev 1 uClibc 0.9.28

here's the kernel info
uname -a
Linux mcgruff 2.4.33 #1 Mon Sep 4 15:52:08 CEST 2006 i686 unknown

I saw in your other mail that you were able to calculate that it leaks 4
bytes at a time.  How did you know that it's at word boundaries?

I don't see this behavior the other side of the link (same hardware,
this software):

LEAF Bering-uClibc 2.3 uClibc 0.9.20 Rev 2
Linux cujo 2.4.32 #1 Sat Mar 4 21:00:13 CET 2006 i686 unknown
ipsec           2.4.4 Rev 4    Openswan IPSEC 

have you tried kernel 2.3.34?

brad






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