Florin Would you run PHP against 10k+ req/s in production without opcode caching? > On how many machines without / with?
I'm not sure about your stack, but every stack I've seen at that high of a load is built very custom for the problem at hand. And it isn't typically upgraded across minor versions (in fact, it's typically only upgraded for security). At least that's my experience everywhere I've seen that big of a farm... And when it is upgraded, it's usually a very coordinated effort that takes a LOT of planning and has a lot of moving parts... And to be fair, how many installs are there that get 10k req/s? A few hundred? That's not the kind of system we should be targeting when discussing a language feature/change. Sure it's sexy, but it represents less than 1% of the install base of PHP (much less, prob on the order of 0.01%). So while I wouldn't write them off (far from it), justifying a change because it matters to that scale is like justifying ejection seats in cars because hitting a wall at 200mph on a race track can kill you...
