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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Mon, 28 Feb 2011 09:13:22 -0500
From:	Thomas Graf <tgraf@...radead.org>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	David Miller <davem@...emloft.net>, rick.jones2@...com,
	therbert@...gle.com, wsommerfeld@...gle.com,
	daniel.baluta@...il.com, netdev@...r.kernel.org
Subject: Re: SO_REUSEPORT - can it be done in kernel?

On Mon, Feb 28, 2011 at 07:36:59PM +0800, Herbert Xu wrote:
> But please do test them heavily, especially if you have an AMD
> NUMA machine as that's where scalability problems really show
> up.  Intel tends to be a lot more forgiving.  My last AMD machine
> blew up years ago :)

This is just a preliminary test result and not 100% reliable
because half through the testing the machine reported memory
issues and disabled a DIMM before booting the tested kernels.

Nevertheless, bind 9.7.3:

2.6.38-rc5+: 62kqps
2.6.38-rc5+ w/ Herbert's patch: 442kqps

This is on a 2 NUMA Intel Xeon X5560 @ 2.80GHz with 16 cores

Again, this number is not 100% reliably but clearly shows that
the concept of the patch is working very well.

Will test Herbert's patch on the machine that did 650kqps with
SO_REUSEPORT and also on some AMD machines.
--
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