17 Mar
2021
17 Mar
'21
5:45 a.m.
From: Yunsheng Lin <linyunsheng@huawei.com> Date: Tue, 16 Mar 2021 10:40:56 +0800
On 2021/3/16 7:41, David Miller wrote:
From: Yunsheng Lin <linyunsheng@huawei.com>
At least for the fast path, taking two locks for lockless qdisc hurts performance when handling requeued skb, especially if the lockless qdisc supports TCQ_F_CAN_BYPASS.
The bad txq and gro skb cases are not "fast path", sorry