[HTCondor-users] Preemption very slow?

[Sam Copeland <SCopeland@xxxxxxxxxxxx>]

Hi,

 

I have setup my PREEMPTION_REQUIREMENTS variable in my central manager and my machine config file with

 

use POLICY : PREEMPT_IF_MEMORY_EXCEEDED

WANT_VACATE = FALSE

WANT_SUSPEND = FALSE

 

PREEMPTION_REQUIREMENTS = (SubmitterGroupResourcesInUse < SubmitterGroupQuota) && (ifThenElse(isUndefined(RemoteGroupResourcesInUse),1000000,RemoteGroupResourcesInUse) > ifThenElse(isUndefined(RemoteGroupQuota),0,RemoteGroupQuota))

 

To test, I am submitting many jobs to a group where quota is zero but accept_surplus is true until the resources available are maxed out. Then, I am submitting jobs to a group where the quota is greater than 0. Jobs are evicted from the first batch (that’s over its quota), but they are evicted very slowly, one at a time, every 30 seconds or so.

 

Why is it so slow? Is there a way to speed it up? Is it only able to evict one job per negotiation cycle?

 

Thanks,

Sam

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