> It strikes me that possibly you were using the 2.2 kernel.
Yes, the performance tests were on 2.2 -- and surely things have changed
in 2.4 -- most notably, as you mention, the request merging stuff.
> But in general I find that Enbd goes
> either at the speed of the net or at the speed of the remote disk,
> whichever is slower.
Well, that's as good as it gets. I had noticed that NBD on 2.2 was
also capable of writing at speeds just under the TCP bandwidth with
100Mb/s ethernet. (I wonder if it would scale nicely to 1Gb/s?)
-- Paul Clements Paul.Clements@SteelEye.com- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/