netdev - Re: [PATCH 2/2] net: Use Toeplitz for IPv4 and IPv6 connection hashing

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]

Message-ID: <20130923161115.5d756838@nehalam.linuxnetplumber.net>
Date:	Mon, 23 Sep 2013 16:11:15 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Tom Herbert <therbert@...gle.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org,
	jesse.brandeburg@...el.com
Subject: Re: [PATCH 2/2] net: Use Toeplitz for IPv4 and IPv6 connection
 hashing

On Mon, 23 Sep 2013 15:44:51 -0700 (PDT)
Tom Herbert <therbert@...gle.com> wrote:

> Toeplitz
>   IPv4
>     58.72% CPU utilization
>     110/146/198 90/95/99% latencies
>     1.72549e+06 tps
>   IPv6
>     72.38% CPU utilization
>     117/168/255 90/95/99% latencies
>     1.58545e+06 tps
> 
> Jhash
>   IPv4
>     57.67% CPU utilization
>     111/146/196 90/95/99% latencies
>     1.71574e+06 tps
>   IPv6
>     71.84% CPU utilization
>     117/166/248 90/95/99% latencies
>     1.59359e+06 tps

It looks slower and more complex than Jhash, what is the benefit?
Have you investigated using Murmur instead?
--
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