netdev - Re: SO_REUSEPORT - can it be done in kernel?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 27 Jan 2011 13:32:25 -0800
From:	Tom Herbert <therbert@...gle.com>
To:	Daniel Baluta <daniel.baluta@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: SO_REUSEPORT - can it be done in kernel?

On Thu, Jan 27, 2011 at 2:07 AM, Daniel Baluta <daniel.baluta@...il.com> wrote:
> Hi Tom,
>
> How did you solved the issue regarding scaling TCP listeners?
> I think SO_REUSEPORT proposed by patch [1] can be a good
> start. Where there any follow ups?
>

As Bill mentioned we are continue to work on the TCP issues.  Looks
like modifying the TCP listener structures will probably be required.

> Also, solving the problem in users pace can be an option. I want
> to run multiple instances of a DNS server on a multi core system.
> Any suggestions would be welcomed.
>
> SO_REUSEPORT option seems to be already there [2]. Where
> there any plans to have a kernel implementation?
>

Yes, we are still planning this.  The UDP implementation for my
earlier patch should be usable to try for DNS/UDP-- this is in fact
where we saw a major performance gain.  Eric Dumazet had some nice
improvements that should probably be looked at also.

Tom
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html