netdev - Re: [PATCH net-next 0/3] openvswitch: Add STT support.

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: <1421871749.4832.32.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Wed, 21 Jan 2015 12:22:29 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Tom Herbert <therbert@...gle.com>
Cc:	Pravin Shelar <pshelar@...ira.com>,
	David Miller <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 0/3] openvswitch: Add STT support.

On Wed, 2015-01-21 at 11:45 -0800, Tom Herbert wrote:
> > I used bare metal intel servers. All VXLAN tests were done using linux
> > kernel device without any VMs. All STT tests are done using OVS bridge
> > and STT port.
> >
> So right off the bat you're running the baseline differently than the
> target. Anyway, I cannot replicate your numbers for VXLAN, I see much
> better performance and this with pretty old servers and dumb NICs. I
> suspect you might not have GSO/GRO properly enabled, but instead of
> trying to debug your setup, I'd rather restate my request that you
> provide a network interface to STT so we can do our own fair
> comparison.

I have not read specs nor the patch, but I would expect that with a TCP
stream, you simply can coalesce as many inner segments as you want.

So you could build a single TSO packet containing 400 'messages' of 160
bytes or so.

Something that a datagram tunneling cannot really do, assuming you want
full offloading support.




--
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