merge of #4198 speed up feeds.mocha
merge of #4198 speed up feeds.mocha

branch: larkost/4198-speedup-feeds.mocha
review: CR 3228

eliangidoni/rethinkdb,mbroadst/rethinkdb,grandquista/rethinkdb,robertjpayne/rethinkdb,jmptrader/rethinkdb,tempbottle/rethinkdb,catroot/rethinkdb,gavioto/rethinkdb,KSanthanam/rethinkdb,tempbottle/rethinkdb,JackieXie168/rethinkdb,dparnell/rethinkdb,eliangidoni/rethinkdb,mcanthony/rethinkdb,mbroadst/rethinkdb,pap/rethinkdb,tempbottle/rethinkdb,bchavez/rethinkdb,mbroadst/rethinkdb,mbroadst/rethinkdb,dparnell/rethinkdb,pap/rethinkdb,pap/rethinkdb,catroot/rethinkdb,grandquista/rethinkdb,bchavez/rethinkdb,robertjpayne/rethinkdb,jmptrader/rethinkdb,KSanthanam/rethinkdb,bpradipt/rethinkdb,mbroadst/rethinkdb,bchavez/rethinkdb,mcanthony/rethinkdb,bpradipt/rethinkdb,niieani/rethinkdb,eliangidoni/rethinkdb,jmptrader/rethinkdb,Qinusty/rethinkdb,JackieXie168/rethinkdb,grandquista/rethinkdb,niieani/rethinkdb,dparnell/rethinkdb,eliangidoni/rethinkdb,mcanthony/rethinkdb,victorbriz/rethinkdb,JackieXie168/rethinkdb,robertjpayne/rethinkdb,pap/rethinkdb,tempbottle/rethinkdb,bchavez/rethinkdb,victorbriz/rethinkdb,grandquista/rethinkdb,dparnell/rethinkdb,mcanthony/rethinkdb,robertjpayne/rethinkdb,robertjpayne/rethinkdb,pap/rethinkdb,tempbottle/rethinkdb,dparnell/rethinkdb,eliangidoni/rethinkdb,niieani/rethinkdb,dparnell/rethinkdb,robertjpayne/rethinkdb,grandquista/rethinkdb,grandquista/rethinkdb,gavioto/rethinkdb,tempbottle/rethinkdb,KSanthanam/rethinkdb,gavioto/rethinkdb,jmptrader/rethinkdb,pap/rethinkdb,catroot/rethinkdb,grandquista/rethinkdb,victorbriz/rethinkdb,Qinusty/rethinkdb,Qinusty/rethinkdb,tempbottle/rethinkdb,JackieXie168/rethinkdb,mcanthony/rethinkdb,Qinusty/rethinkdb,JackieXie168/rethinkdb,victorbriz/rethinkdb,catroot/rethinkdb,eliangidoni/rethinkdb,KSanthanam/rethinkdb,bpradipt/rethinkdb,JackieXie168/rethinkdb,eliangidoni/rethinkdb,catroot/rethinkdb,gavioto/rethinkdb,mbroadst/rethinkdb,JackieXie168/rethinkdb,KSanthanam/rethinkdb,Qinusty/rethinkdb,victorbriz/rethinkdb,victorbriz/rethinkdb,jmptrader/rethinkdb,JackieXie168/rethinkdb,niieani/rethinkdb,bchavez/rethinkdb,jmptrader/rethinkdb,Qinusty/rethinkdb,bpradipt/rethinkdb,grandquista/rethinkdb,grandquista/rethinkdb,pap/rethinkdb,bpradipt/rethinkdb,dparnell/rethinkdb,mbroadst/rethinkdb,mbroadst/rethinkdb,robertjpayne/rethinkdb,pap/rethinkdb,niieani/rethinkdb,gavioto/rethinkdb,Qinusty/rethinkdb,bchavez/rethinkdb,jmptrader/rethinkdb,robertjpayne/rethinkdb,gavioto/rethinkdb,Qinusty/rethinkdb,dparnell/rethinkdb,victorbriz/rethinkdb,jmptrader/rethinkdb,mcanthony/rethinkdb,robertjpayne/rethinkdb,niieani/rethinkdb,bchavez/rethinkdb,JackieXie168/rethinkdb,dparnell/rethinkdb,bpradipt/rethinkdb,niieani/rethinkdb,catroot/rethinkdb,victorbriz/rethinkdb,mcanthony/rethinkdb,KSanthanam/rethinkdb,bpradipt/rethinkdb,bchavez/rethinkdb,Qinusty/rethinkdb,eliangidoni/rethinkdb,mbroadst/rethinkdb,bchavez/rethinkdb,KSanthanam/rethinkdb,bpradipt/rethinkdb,tempbottle/rethinkdb,KSanthanam/rethinkdb,mcanthony/rethinkdb,catroot/rethinkdb,gavioto/rethinkdb,catroot/rethinkdb,eliangidoni/rethinkdb,bpradipt/rethinkdb,gavioto/rethinkdb,niieani/rethinkdb