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Message-ID: <20231202202305.jizoinhgzo5c4gew@google.com> Date: Sat, 2 Dec 2023 20:23:05 +0000 From: Shakeel Butt <shakeelb@...gle.com> To: Coco Li <lixiaoyan@...gle.com> Cc: Jakub Kicinski <kuba@...nel.org>, Eric Dumazet <edumazet@...gle.com>, Neal Cardwell <ncardwell@...gle.com>, Mubashir Adnan Qureshi <mubashirq@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew@...n.ch>, Jonathan Corbet <corbet@....net>, David Ahern <dsahern@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org, Chao Wu <wwchao@...gle.com>, Wei Wang <weiwan@...gle.com>, Pradeep Nemavat <pnemavat@...gle.com> Subject: Re: [PATCH v8 net-next 3/5] netns-ipv4: reorganize netns_ipv4 fast path variables On Wed, Nov 29, 2023 at 07:27:54AM +0000, Coco Li wrote: > Reorganize fast path variables on tx-txrx-rx order. > Fastpath cacheline ends after sysctl_tcp_rmem. > There are only read-only variables here. (write is on the control path > and not considered in this case) > > Below data generated with pahole on x86 architecture. > Fast path variables span cache lines before change: 4 > Fast path variables span cache lines after change: 2 > > Suggested-by: Eric Dumazet <edumazet@...gle.com> > Reviewed-by: Wei Wang <weiwan@...gle.com> > Reviewed-by: David Ahern <dsahern@...nel.org> > Signed-off-by: Coco Li <lixiaoyan@...gle.com> Reviewed-by: Shakeel Butt <shakeelb@...gle.com>
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