[hobbit] Hobbid_channel crashing on me

[Sean R. Clark]

 /sw/bbserver/bbvar/rrd> find . -name "*.rrd" -print | wc -l
18102
[sclark][tools-www-01] /sw/bbserver/bbvar/rrd> 


I have 18,102 RRD's, 17,671 of which are controlled by the hobbitd_channel
(the others are written/populated from other sources)


The slice I have the data on has a busy% between 16-88% depending on what's
going on (so yes, high I/O as well)

Iostat -xtc 5 2 :

device       r/s    w/s   kr/s   kw/s wait actv  svc_t  %w  %b 
sd20       382.6  217.2 2863.0  265.4  0.0  2.4    4.0   0  87 

device       r/s    w/s   kr/s   kw/s wait actv  svc_t  %w  %b
sd20       138.7  108.0 1304.1  605.9  0.6  2.6   12.7   1  31  


So I would be interested in your solution ;)

-Sean

-----Original Message-----
From: Henrik Stoerner [mailto:henrik at hswn.dk] 
Sent: Monday, August 27, 2007 10:46 PM
To: hobbit at hswn.dk
Subject: Re: [hobbit] Hobbid_channel crashing on me

On Mon, Aug 27, 2007 at 01:49:55PM -0400, Sean R. Clark wrote:
> Following up on my own thread
> It's crashing with an "Out of memory" abort.
> 
> What can cause the hobbitd channel to reach this condition? Am I 
> sending it too much information?

It shouldn't do that normally, but I have seen some cases where it does that
when the hobbitd_rrd process cannot keep up with the amount of updates being
fed into it.

How many RRD files do you have ? Could you check if this server has a high
I/O load ?

If that is the problem, then I probably do have a solution ready for you
(I've run into the same problem at work).


Regards,
Henrik


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