Re: [Condor-users] timeout reading buffer

[Preston Smith <psmith@xxxxxxxxxx>]

On Mar 1, 2006, at 1:12 PM, Maxim Kovgan wrote:

> Hi, Preston.
>
> Qs:
> * Are you using host based firewalls ?
 No.

> * Can you look at /var/log/messages too ?

 Nothing syslogged besides gridftp connections.

> * Are you using a good equipment (routers/switches) ?

 Yea. All my condor gear is directly connected into a Cisco 6509  
core switch.
 Cluster nodes are all on cisco 4948 leaf switches with 10 Gbit links
 back to said core switch.


> * What is the topology of your network ?
 see above

> I suspect the problem is either with OS or network, anyway, not  
> condor related.

 This schedd has been humming along busily for weeks, right up until  
it got to
 about 3000 jobs queued up.

 The problem goes away when I hold half or so of the jobs in this  
schedd.
 Now, with a large chunk of the queue held, condor's negotiated and  
started
 hundreds of jobs like it should. I've got the queue drained by now,  
though, just by
 holding a big chunk, and periodically releasing 6-700 jobs..

 So while I never really solved the problem, I've worked around it.

-Preston

--
Preston Smith  <psmith@xxxxxxxxxx>
Systems Research Engineer
Rosen Center for Advanced Computing, Purdue University