[HTCondor-users] ResidentSetSize

[Bob Ball <ball@xxxxxxxxx>]

It would appear that the ResidentSetSize value does not immediately 
appear in the Job ClassAd as a job starts, but only some short time 
later.  OK, I can live with that.

However, what is harder to understand is that we have seen instances 
where it will display a value of 27GB when a job starts!  I was trying 
to use this on the schedd machine
   SYSTEM_PERIODIC_REMOVE = ResidentSetSize > 5000*RequestMemory
but that 27GB cut was killing the jobs.  However, once I removed this 
from the schedd, similar jobs finished fine, with ClassAds reporting 
only about 2.7GB of final ResidentSetSize.

Has anyone seen this kind of thing before?  How could this be real, and 
why does the ResidentSetSize not appear in the job ClassAd at job start?

We are running HTCondor 8.4.6 with cgroups enabled.

Thanks in advance,
bob