[hobbit] Highlights of the 4.3.0 version

[Hubbard, Greg L]

Well, we watch for the presence of processes today.  It would be nice to
be able to track cpu and size of "important" processes over time.

Another problem is detecting CPU hogs (sometimes things run away),
another problem is detecting processes with memory leaks -- they just
grow and grow and grow.  How can Hobbit help?

GLH 

-----Original Message-----
From: Henrik Stoerner [mailto:henrik at hswn.dk] 
Sent: Tuesday, July 24, 2007 3:31 PM
To: hobbit at hswn.dk
Subject: Re: [hobbit] Highlights of the 4.3.0 version

On Sat, Jul 21, 2007 at 07:16:12PM -0400, Asif Iqbal wrote:
> - Display column only when  it is red
>  (http://www.*hobbit*mon.com/*hobbit*on/2006/08/msg00920.html)

I'll leave that for later. There will probably be an entire new version
with just display things.

> - SNMP trap by default
> - SNMP probe option builtin

Too much for now. I need to dig into the Net-SNMP library API to do
that.

> - Process specific alert
>  (http://www.hswn.dk/hobbiton/2005/11/msg00159.html)

Already in 4.2.0 via the GROUP definition in hobbit-clients.cfg and the
corresponding rule in hobbit-alerts.cfg

> - Comment TAG for DOWNTIME
>  (http://www.hobbitmon.com/hobbiton/2007/04/msg00141.html)

Has been implemented for 4.3.0

> - Add functionalities in `delay'
>  (http://www.hswn.dk/hobbiton/2005/06/msg00272.html)

Haven't looked at that.

> - CPU/Memory Usage per process
>  (http://osdir.com/ml/monitoring.hobbit/2007-01/msg00429.html)

Probably impossible. Most "ps" implementations can report the current
amount of cpu/memory a process uses, but that's a snapshot (ever noticed
how "top" always has itself in the top list of cpu-using processes?). 
What's interesting is not how much cpu/memory a process uses exactly
when the Hobbit client runs the "ps" command, but how much it has used
on average since the last client run - similar to what "vmstat" reports
for the system as a whole. I don't know of any way to get this data.

Another problem with this is identifying what a process is. A
long-running daemon often forks child-processes that are short-lived;
should we add their cpu-utilisation to that of the long-running process?
If yes, then we have to monitor all processes that are started (so
running once every N seconds is not sufficient); if no, then you won't
spot the cpu hog because it was spawned as a child process.

> - Text based alert for `msgs'. Currently it shows as html in my email
>  (http://osdir.com/ml/monitoring.hobbit/2007-01/msg00203.html)

Easily done with an alert script.


Regards,
Henrik


To unsubscribe from the hobbit list, send an e-mail to
hobbit-unsubscribe at hswn.dk