1. A method for processing transactions in a computing environment with transactional memory, the method comprising: executing, by a processor, a transaction-hint instruction associated with a first transaction, the transaction-hint instruction specifying a transaction-count-to-completion (CTC) value, the CTC value indicating how far the first transaction is from completion; adjusting, by the processor, the CTC value based on progress of the first transaction; identifying, by the processor, a disruptive event while processing the first transaction, the disruptive event associated with inducing transactional aborts; determining, by the processor, whether the adjusted CTC value satisfies deferral criteria; and based on determining that the adjusted CTC value satisfies the deferral criteria, deferring processing of the disruptive event.