benchmark: factor out runner
benchmark: factor out runner

bunnyblue/tchannel,vanloswang/tchannel,i/tchannel,i/tchannel,vanloswang/tchannel,RyanTech/tchannel,savaki/tchannel,savaki/tchannel,vanloswang/tchannel,RyanTech/tchannel,sasa233/tchannel,chenwenbin928/tchannel,i/tchannel,chenwenbin928/tchannel,hustxiaoc/tchannel,benfleis/tchannel,bunnyblue/tchannel,sasa233/tchannel,hustxiaoc/tchannel,chenwenbin928/tchannel,Zirpon/tchannel,savaki/tchannel,hustxiaoc/tchannel,benfleis/tchannel,Zirpon/tchannel,bunnyblue/tchannel,benfleis/tchannel,sasa233/tchannel,Zirpon/tchannel,RyanTech/tchannel