Re: [PATCH net-next 0/5] skbuff: introduce skbuff_heads bulking and reusing
From: Eric Dumazet <edumazet@google.com>
Date: 2021-01-12 12:34:05
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On Tue, Jan 12, 2021 at 11:56 AM Alexander Lobakin [off-list ref] wrote:
Ah, I should've mentioned that I use UDP GRO Fraglists, so these numbers are for GRO.
Right, this suggests UDP GRO fraglist is a pathological case of GRO, not saving memory. Real GRO (TCP in most cases) will consume one skb, and have page fragments for each segment. Having skbs linked together is not cache friendly. So I would try first to make this case better, instead of trying to work around the real issue.