linux-kernel - Re: [net-next 1/2] ipvs: batch __ip_vs

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Date:   Mon, 29 Jul 2019 23:03:31 +0300 (EEST)
From:   Julian Anastasov <ja@....bg>
To:     Haishuang Yan <yanhaishuang@...s.chinamobile.com>
cc:     "David S. Miller" <davem@...emloft.net>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Simon Horman <horms@...ge.net.au>, netdev@...r.kernel.org,
        lvs-devel@...r.kernel.org, linux-kernel@...r.kernel.org,
        netfilter-devel@...r.kernel.org
Subject: Re: [net-next 1/2] ipvs: batch __ip_vs_cleanup


	Hello,

On Thu, 18 Jul 2019, Haishuang Yan wrote:

> As the following benchmark testing results show, there is a little performance improvement:

	OK, can you send v2 after removing the LIST_HEAD(list) from
both patches, I guess, it is not needed. If you prefer, you can
include these benchmark results too.

> $  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
> 
> 
> > 
> >> +		ipvs = net_ipvs(net);
> >> +		ip_vs_conn_net_cleanup(ipvs);
> >> +		ip_vs_app_net_cleanup(ipvs);
> >> +		ip_vs_protocol_net_cleanup(ipvs);
> >> +		ip_vs_control_net_cleanup(ipvs);
> >> +		ip_vs_estimator_net_cleanup(ipvs);
> >> +		IP_VS_DBG(2, "ipvs netns %d released\n", ipvs->gen);
> >> +		net->ipvs = NULL;

Regards

--
Julian Anastasov <ja@....bg>