[OpenIndiana-discuss] Aggregation performance measurement

[Peter Tribble]

On Mon, Oct 17, 2011 at 4:12 PM, Gabriele Bulfon <gbulfon at sonicle.com> wrote:
> Hi,
> I recently could join an old Sun Sparc machine to an OpenIndiana storage, by adding a couple of
> ethernets to the Sparc machine running Solaris 10/08.
> The Sparc machine is now connected to the storage switch, LACP capable.
> I understand that dladm on Solaris 10 is still different from the OpenIndiana version, so maybe
> the problem I see comes from here.
> I created two trunks of two ports each on the switch, connected the Sparc on one trunk, the storage
> on the other trunk, aggregated cards on both machines through dladm, configured aggr1 on both
> machines,

Ah, but how? What's the actual configuration you used?

In particular, what's the sharing policy ('dladm show-aggr -L')?

My experience with S10 was that I only got both paths in use when
I set the sharing policy to combine L2 and L3.

> All four links are up and quiet on the switch, nothing was moving.
> So I used "netio" to check network throughput, resulting around 90MB/sec: strange, this is
> less than 1Gb/sec! Is aggregation workgin?
> So, I started transfering data from the Sparc to the storage via NFS, and looking at the switch,
> I could see one machine working on both ports of his trunk, while the other one was almost
> working on just one port......that is something more than 1Gb/sec!....why??
> So I tried removing the "sleeping" cable, and measured the same throughput....
> Strangely, I tried removing the "working" cable, and insterted the "sleeping" one, and still
> everything was working on one port, the "sleeping" one became operational.
> Added again the second one, and that was become the "sleeping" one....
> Looks like aggregation is not using all the available throughput......what am I missing? is there
> any incompatibility between Solaris10/08 and OpenIndiana?
> Thanx for any help.
> Gabriele.
>
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>



-- 
-Peter Tribble
http://www.petertribble.co.uk/ - http://ptribble.blogspot.com/