I am running a WISP and use Mikrotik RB450G as NAS and my bandwidth pipe from the upstream provider is nearing choke.
I wanted to find out what is the size of ‘Only-hardware-queue’ on RB450G so that I can design a new queue to hold more packets than the hardware queue.
only-hardware-queue > leaves interface with only hw transmit descriptor ring buffer which acts as a queue in itself. Usually at least 100 packets can be queued for transmit in transmit descriptor ring buffer. Transmit descriptor ring buffer size and the amount of packets that can be queued in it varies for different types of ethernet MACs.
So, I believe Mikrotik could be able to determine the exact amount of queue size for a given product. If you didn’t get an answer here, you could try emailing the support.