Re: [Condor-users] lost updates / network issues?

[Steven Timm <timm@xxxxxxxx>]

The two problems are related--if you miss that many updates
then the collector will give up on a resource from time to time
and time out the classad.  This may be a time to turn on
UPDATE_COLLECTOR_WITH_TCP--that will make the updates much
more reliable.  At one point I had this level of updateslost
and changed to tcp and it solved the problem altogether.

Steve


------------------------------------------------------------------
Steven C. Timm, Ph.D  (630) 840-8525
timm@xxxxxxxx  http://home.fnal.gov/~timm/
Fermilab Computing Division, Scientific Computing Facilities,
Grid Facilities Department, FermiGrid Services Group, Assistant Group Leader.

On Mon, 8 Oct 2007, Wojtek Goscinski wrote:

> Howdy All,
>
> I'm hoping maybe someone can give me some advice about how to diagnose a
> problem with our pool.
>
> We're running a test pool with a handful of resources. Condorview is showing
> that resources are sometimes appearing and disappearing (see attached
> screenshot) - though I've only noticed this rarely with condor_status. There
> is no specific reason for resources to join and leave - apart form network
> issues perhaps...
>
> In addition, condor_status shows me that a lot of updates are being lost -
> sometimes around 1/4 (see below).
>
> Hence, i've got 2 questions:
>
> - is this amount of updates lost cause for concern? Machines are on a busy
> student network. Should I be upping the rate at which updates occur?
> - why might condorview be showing me that resources are entering and leaving
> the pool? is this cause for concern?
>
> Regards,
>
> James
>
> UpdatesTotal = 4725
> UpdatesSequenced = 4793
> UpdatesLost = 1028
>
> UpdatesTotal = 5151
> UpdatesSequenced = 5148
> UpdatesLost = 366
>
> UpdatesTotal = 4636
> UpdatesSequenced = 4612
> UpdatesLost = 916
>
> UpdatesTotal = 3688
> UpdatesSequenced = 3630
> UpdatesLost = 1175
>
> UpdatesTotal = 5214
> UpdatesSequenced = 5213
> UpdatesLost = 361
>
> UpdatesTotal = 5202
> UpdatesSequenced = 5201
> UpdatesLost = 1471
>
> UpdatesTotal = 5221
> UpdatesSequenced = 5220
> UpdatesLost = 284