Avernus- 181k peasants. 362 bushels per day needed for.full rations. 2500/wk (Not including militia) and produces ~2000 food per week.
Astrum- 152k peasants. Need 304 bushels per day 2100/wk. They produce on average 1500 bushels and they have/had a crap ton of militia.
So they almost have to have their cities on half rations. Do lowered rations penalties get worse over time? Or do they have a cap?