Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1729384

Re: [PATCH] ipv4: Namespaceify tcp_max_orphans knob

From Cong Wang <xiyou.wangcong@gmail.com>
Newsgroups linux.kernel
Subject Re: [PATCH] ipv4: Namespaceify tcp_max_orphans knob
Date 2017-09-09 06:40 +0200
Message-ID <unFIJ-mk-5@gated-at.bofh.it> (permalink)
References <umVwd-2xy-3@gated-at.bofh.it> <unzMZ-4J3-7@gated-at.bofh.it> <unCKS-6S9-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

On Fri, Sep 8, 2017 at 6:25 PM, 严海双 <yanhaishuang@cmss.chinamobile.com> wrote:
>
>
>> On 2017年9月9日, at 上午6:13, Cong Wang <xiyou.wangcong@gmail.com> wrote:
>>
>> On Wed, Sep 6, 2017 at 8:10 PM, Haishuang Yan
>> <yanhaishuang@cmss.chinamobile.com> wrote:
>>> Different namespace application might require different maximal number
>>> of TCP sockets independently of the host.
>>
>> So after your patch we could have N * net->ipv4.sysctl_tcp_max_orphans
>> in a whole system, right? This just makes OOM easier to trigger.
>>
>
> From my understanding, before the patch, we had N * net->ipv4.sysctl_tcp_max_orphans,
> and after the patch, we could have ns1.sysctl_tcp_max_orphans + ns2.sysctl_tcp_max_orphans
> + ns3.sysctl_tcp_max_orphans, is that right? Thanks for your reviewing.

Nope, by N I mean the number of containers. Before your patch, the limit
is global, after your patch it is per container.

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH] ipv4: Namespaceify tcp_max_orphans knob Haishuang Yan <yanhaishuang@cmss.chinamobile.com> - 2017-09-07 05:20 +0200
  Re: [PATCH] ipv4: Namespaceify tcp_max_orphans knob Cong Wang <xiyou.wangcong@gmail.com> - 2017-09-09 00:20 +0200
    Re: [PATCH] ipv4: Namespaceify tcp_max_orphans knob 严海双 <yanhaishuang@cmss.chinamobile.com> - 2017-09-09 03:30 +0200
      Re: [PATCH] ipv4: Namespaceify tcp_max_orphans knob Cong Wang <xiyou.wangcong@gmail.com> - 2017-09-09 06:40 +0200
        Re: [PATCH] ipv4: Namespaceify tcp_max_orphans knob David Miller <davem@davemloft.net> - 2017-09-09 07:20 +0200
          Re: [PATCH] ipv4: Namespaceify tcp_max_orphans knob 严海双 <yanhaishuang@cmss.chinamobile.com> - 2017-09-09 12:30 +0200
        Re: [PATCH] ipv4: Namespaceify tcp_max_orphans knob 严海双 <yanhaishuang@cmss.chinamobile.com> - 2017-09-09 07:20 +0200

csiph-web