[lustre-discuss] Terrible BW via lustre network

[Peter Grandi]

> [...] 1 OSS (60 HDDs configured as a single dRAID3 pool, one vdev)

That is *amazing*. :-(

> 1 Client (using the same Lustre server image)

1 OSS, 1 client: I guess Lustre is not a parallel filesystem
anymore :-)

> Problem: Raw bandwidth per drive: ~250 MB/s

A good example of "up to" metrics :-)

> ZFS pool raw throughput (local): 5-5.5 GB/s

A very good example of "up to" metrics :-)
https://github.com/axboe/fio/tree/master/examples/

> Lustre client mount throughput: <300 MB/s

What is the "throughput" if you mount the filesystem on the
server itself via 'localhost'?

Note: with questions like this I am always wondering whether to
not comment at all (my usual choice), comment euphemistically as
in this case, or comment clearly.