On Mon, 2016-12-05 at 01:31 +0200, Saeed Mahameed wrote:
> Alexei, we should start considering PPC archs for XDP use cases,
> demanding page per packet on those archs is a little bit heavy
> requirement
Well, 'little' is an understatement ;)
Note that PPC had serious problems before commit bd68a2a854ad5a85f0
("net: set SK_MEM_QUANTUM to 4096")
So I suspect one page per frame will likely be a huge problem
for hosts dealing with 10^5 or more TCP sockets.
Either skb->truesize is set to 64KB and TCP window must be really tiny,
or skb->truesize is set to ~2KB and OOM is waiting to happen.
