Считаю не плохим результатом, а вы как думаете?

Steve discusses what his team had to do to build a highly available 64-bit based web solution that supports a demanding service level agreement (SLA): more than 3 billion daily transactions, 99.99% of all transactions under 250 ms response time

отсюда

А вообще речь о пользе GC::RegisterForFullGCNotification