Pseudorandom number generation in taobench slowpaths

[ss7pro]

Folks,

Is it possible to replace taobench pseudo-random number generation in taobench with implementation we have in feedsim?

[excelle08]

Does folly::Random::rand32() has the same lock contention problem as in std::rand()?

[lukalt]

Does folly::Random::rand32() has the same lock contention problem as in std::rand()?

No, it uses a thread-local random generator, so no global lock here.