Re: [HTCondor-users] Possible delays for starting a shadow?

[ervikrant06@xxxxxxxxx]

Hello,Â

If I am understanding your query correctly, It could possibly be related to the following settings (set to higher value than default).

MAX_FILE_DESCRIPTORS = 102400
SCHEDD_MAX_FILE_DESCRIPTORS = 102400
SHARED_PORT_MAX_FILE_DESCRIPTORS = 102400

https://stackoverflow.com/questions/56650579/why-should-i-close-all-file-descriptors-after-calling-fork-and-prior-to-callin

Thanks & Regards,

Vikrant Aggarwal

On Thu, Dec 30, 2021 at 4:35 PM Sever, Krunoslav <krunoslav.sever@xxxxxxx> wrote:

Hi,

at the moment I am investigating a case in which a scheduler delays starting a shadow for unknown reasons.

The job is minimal, no file transfers, executes just some echo statements - as soon as the job is actually started, it is done immendiately.

When submitted to another sched (should have same config), there is consistently no delay.

>From the logs, which are currently still on default level I see:

* job is submitted to and transformed on sched
* negotiator matches the job to a worker a short time later

In the working case the shadow is started on the sched without any delay.

Not so on the sched I am looking at

* the job is in running state according to condor_q
* the job ad has no mention of the matched worker node (yet)
* on the worker I find nothing about the job id in the logs

I have actually a job id right now where I am waiting for the shadow to start with loglevel increased to D_FULLDEBUG but no output for the job yet - but the increase happened after matching, might have missed the interesting stuff.

Do you have any ideas what could cause this behavior?

Best
 Kruno

--
------------------------------------------------------------------------
Krunoslav Sever      Deutsches Elektronen-Synchrotron (IT-Systems)
            Ein Forschungszentrum der Helmholtz-Gemeinschaft
                              Notkestr. 85
phone:Â +49-40-8998-1648Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â22607 Hamburg
e-mail: krunoslav.sever@xxxxxxx                 Germany
------------------------------------------------------------------------
_______________________________________________
HTCondor-users mailing list
To unsubscribe, send a message to htcondor-users-request@xxxxxxxxxxx with a
subject: Unsubscribe
You can also unsubscribe by visiting
https://lists.cs.wisc.edu/mailman/listinfo/htcondor-users

The archives can be found at:
https://lists.cs.wisc.edu/archive/htcondor-users/