Revert "415062 SelectorManager wakeup optimisation"

This reverts commit b58c05d77ccdee924cd9723cd307bab5e9135526.
Revert "415062 SelectorManager wakeup optimisation"

This reverts commit 2f0becff8fbb95d8eee6d0d0cbfc739c7795dd01.
Revert "415062 SelectorManager wakeup optimisation"

This reverts commit edbf6e07aabb1bae2180cb3f8640482392526fe2.