In a modern pausing GC allocation rates are normally limited by the size of your new generation space so are often best considered in terms of MBs. Thread local

In a modern pausing GC allocation rates are normally limited by the size of your new generation space so are often best considered in terms of MBs. Thread local allocation buffers often allow an allocation to be a simple pointer increment, so the cost per allocation is tiny providing you can collect or promote from that buffer fast enough.