From: Eric Dumazet <edumazet@google.com>
To: "David S . Miller" <davem@davemloft.net>
Cc: netdev <netdev@vger.kernel.org>,
Eric Dumazet <edumazet@google.com>,
Willem de Bruijn <willemb@google.com>,
Feng Tang <feng.tang@intel.com>,
Eric Dumazet <eric.dumazet@gmail.com>
Subject: [PATCH net 0/4] tcp: add three static keys
Date: Fri, 14 Jun 2019 16:22:17 -0700 [thread overview]
Message-ID: <20190614232221.248392-1-edumazet@google.com> (raw)
Recent addition of per TCP socket rx/tx cache brought
regressions for some workloads, as reported by Feng Tang.
It seems better to make them opt-in, before we adopt better
heuristics.
The last patch adds high_order_alloc_disable sysctl
to ask TCP sendmsg() to exclusively use order-0 allocations,
as mm layer has specific optimizations.
Eric Dumazet (4):
sysctl: define proc_do_static_key()
tcp: add tcp_rx_skb_cache sysctl
tcp: add tcp_tx_skb_cache sysctl
net: add high_order_alloc_disable sysctl/static key
Documentation/networking/ip-sysctl.txt | 8 +++++
include/linux/bpf.h | 1 -
include/linux/sysctl.h | 3 ++
include/net/sock.h | 12 ++++---
kernel/bpf/core.c | 1 -
kernel/sysctl.c | 44 ++++++++++++++------------
net/core/sock.c | 4 ++-
net/core/sysctl_net_core.c | 7 ++++
net/ipv4/sysctl_net_ipv4.c | 17 ++++++++++
9 files changed, 68 insertions(+), 29 deletions(-)
--
2.22.0.410.gd8fdbe21b5-goog
next reply other threads:[~2019-06-14 23:22 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-14 23:22 Eric Dumazet [this message]
2019-06-14 23:22 ` [PATCH net 1/4] sysctl: define proc_do_static_key() Eric Dumazet
2019-06-14 23:45 ` Alexei Starovoitov
2019-06-14 23:55 ` Eric Dumazet
2019-06-15 0:04 ` Alexei Starovoitov
2019-06-14 23:22 ` [PATCH net 2/4] tcp: add tcp_rx_skb_cache sysctl Eric Dumazet
2019-06-16 7:38 ` Feng Tang
2019-06-14 23:22 ` [PATCH net 3/4] tcp: add tcp_tx_skb_cache sysctl Eric Dumazet
2019-06-16 7:42 ` Feng Tang
2019-06-14 23:22 ` [PATCH net 4/4] net: add high_order_alloc_disable sysctl/static key Eric Dumazet
2019-06-15 3:18 ` [PATCH net 0/4] tcp: add three static keys David Miller
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