[Gluster-users] Single-thread read/write performance over TCP/IP?

[Patrick J. LoPresti]

Hello.  I have a fairly simple question.

What is the fastest single-client, single-thread, single-file read
performance anyone has ever observed using GlusterFS over TCP/IP, and
what hardware did it use?

I need to be able to read 500 megabytes/second, sustained, from a
single file using a single thread.  I have achieved such speeds and
higher, reading 200+ gigabytes sequentially, using a fast RAID and XFS
(i.e., local storage).  I would like to replace that design with
something more networked and scalable.  But my individual clients
still require 500+ megabyte/second reads.

If I tie together a half dozen fast GlusterFS servers with 10GigE,
will I be able to serve another half dozen 10GigE clients at 500MB/sec
each?  (Again, assuming single-file, single-thread on each client.
Also assume each server can read/write its local store at ~1000 MB/sec
sustained.)

Finally, and perhaps off-topic for this list...  If Gluster cannot do
this sort of thing, are there any distributed Linux file systems that
can?

Thanks.

 - Pat

P.S.  Yes, I sent a similar message to the PVFS2 list.  Apologies to
those on both lists who are seeing it twice.