Re: [Devmon] Solution for the purple issue?

[Buchan M. <bg...@st...>]

Re-sending my mail from 2008-12-08 that didn't make it to the list ....

On Monday 13 October 2008 14:35:32 Thomas Kähn wrote:
> Hi Buchan,
>
> On Fri, Oct 10, 2008 at 11:13:58AM +0200, Buchan Milne wrote:
> > On Thursday 09 October 2008 22:02:04 Stewart, Tom L. wrote:
> > > I use to have issues running devmon on a memory constrained Solaris
> > > box. I have now moved it to a RH ES 5.1 system. Since then I have not
> > > had an issue for 62 days straight (knock on wood) and the RH system has
> > > plenty of memory.
> >
> > I have 3 boxes running devmon in production. 2 are RHEL4, one is
> > RHEL5(.2). The RHEL5 box hasn't seen devmon purple in 68 days, one of the
> > RHEL4 boxes has gone purple 7 times since Feb (one stretch of 144 days of
> > green), the other has gone purple 9 times since Feb (one stretch of 88
> > days of green).
> >
> > Now that I do actually ave some time to spend on devmon I will try and
> > track it down (but we really needed the weathermap feature, and we have
> > no other use for cacti, all the trending we had on it was much easier to
> > implement on devmon).
>
> this sounds good. As I said before - if you need someone to test
> patches please contact me.

I've now made devmon's --debug mode continue to send status messages to the 
BB/Hobbit server, so it is now possible to run devmon in debug mode (e.g. 
under screen or similar), until it hits the problem. The last few lines of 
output when devmon stops reporting may be useful.

We're still only seeing this about once a week (on RHEL4 - no occurrences in 
127 days on RHEL5), so if others are seeing it more often, please try this 
patch, and then run devmon in a screen session with '-vvvvv --debug'

http://devmon.svn.sourceforge.net/viewvc/devmon/trunk/modules/dm_msg.pm?view=patch&r1=93&r2=92&pathrev=93

I would like to try and get a beta release of 0.3.1 out this week if possible, 
with or without fixing the root cause (to at least enable more people to try 
and find the problem), although I would much prefer trying to fix it if 
possible.

Regards,
Buchan