On Tue, 4 Mar 2025 11:22:50 -0800 Patrick Mahan <ma...@mahan.org> wrote:
> Morning, > > This might be simple question, but it has my curiosity itching. > > I did a quick scan through the documentation, but I did not see any good > guidelines for determining the number of HugeTLB based on the number of PMDs > and > number of RX/TX queues. > > I'm am looking at three different platforms, one has 2 ports (ixgbe), one has > 3 > ports (1 e1000 and 2 i40es) and a third has 2 ports (1 e1000 and 1 Cavium > liquidIO). > > I'm trying to come up with some means of defining the HugeTLB requirements > other > than trial and error. > > Thanks, > > Patrick There is on exact way to estimate this. But for most applications the largest memory footprint is the mbuf pool. For sizing the mbuf pool you need to account for all the NIC's, queues, and descriptor arrays as well as any internal staging buffers.
