block network devices

[dsr-mzpnVDyJpH4k7aNtvndDlA at public.gmane.org (Dan Ritter)]

I've been looking at cluster filesystems over iSCSI and AoE, and
on moderate hardware, performance appears to be execrable.
Anyone around have experience with this sort of thing?

For a simple example, I have:

- a network that I can measure 93 MB/s across
- a disk that I can measure 74 MB/s reading
- a best-case ext3 over AoE of 41 MB/s
- a usual-case ocfs2 over iSCSI of 15MB/s

Anyone have a clue about the disparities between disk speed and
transferring data from that disk over the network?

-dsr-

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