netdev - [PATCH v2 0/2] ipvs: speedup ipvs netns dismantle

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Date:   Fri, 27 Sep 2019 12:54:49 +0800
From:   Haishuang Yan <yanhaishuang@...s.chinamobile.com>
To:     Julian Anastasov <ja@....bg>,
        "David S. Miller" <davem@...emloft.net>,
        Pablo Neira Ayuso <pablo@...filter.org>
Cc:     netdev@...r.kernel.org, lvs-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org, netfilter-devel@...r.kernel.org,
        Haishuang Yan <yanhaishuang@...s.chinamobile.com>
Subject: [PATCH v2 0/2] ipvs: speedup ipvs netns dismantle

Implement exit_batch() method to dismantle more ipvs netns
per round.

Tested:
$  cat add_del_unshare.sh
#!/bin/bash

for i in `seq 1 100`
    do
     (for j in `seq 1 40` ; do  unshare -n ipvsadm -A -t 172.16.$i.$j:80 >/dev/null ; done) &
    done
wait; grep net_namespace /proc/slabinfo

Befor patch:
$  time sh add_del_unshare.sh
net_namespace       4020   4020   4736    6    8 : tunables    0    0    0 : slabdata    670    670      0

real    0m8.086s
user    0m2.025s
sys     0m36.956s

After patch:
$  time sh add_del_unshare.sh
net_namespace       4020   4020   4736    6    8 : tunables    0    0    0 : slabdata    670    670      0

real    0m7.623s
user    0m2.003s
sys     0m32.935s

Haishuang Yan (2):
  ipvs: batch __ip_vs_cleanup
  ipvs: batch __ip_vs_dev_cleanup

 include/net/ip_vs.h             |  2 +-
 net/netfilter/ipvs/ip_vs_core.c | 47 ++++++++++++++++++++++++-----------------
 net/netfilter/ipvs/ip_vs_ctl.c  | 12 ++++++++---
 3 files changed, 38 insertions(+), 23 deletions(-)

-- 
1.8.3.1