Is DRF unreasonable in scenarios with multiple frameworks registered at the same time?

[sujz . buaa]

Suppose I registered two frameworks namely marathon and chronos(both in role *) 
one after another, successfully deployed  and run one app app1 by marathon, 
also deployed one cron app app2 by chronos, before app2 due or after app2 
finished, I can't deploy and launch any new app by marathon although there are 
many resources left, because mesos will send offer to chronos all the time as 
share of chronos is smaller according to DRF, so is DRF unreasonable and is 
there any advice on how to allocate resources in this scenario?  Any suggestipn 
will be appreciate.
Best regards!