It's taking over 8 minutes to copy 1GB to my ReadyNas NV+ over a direct wired connection to my macbook pro, no routers or switches. I'm on the latest firmware.
Looks to me like I'm WAY behind what I should be getting, for example: http://www.readynas.com/forum/viewtopic.php?f=28&t=26902
WRITE 1.07 GB Mac -> NAS 8m.22s (502s) : 2.13 MB/s
READ 1.07 GB NAS -> Mac 1m.43s (103s) : 10.38 MB/s
I also tested with journalling disabled (everything in performance checked other than Enable fast CIFS writes)
WRITE 1.07 GB Mac -> NAS 6m06s (366s) : 2.92 MB/s
READ 1.07 GB NAS -> Mac 1m.18s (78s) : 13.71 MB/s
Even at worst, the benchmarks on the linked page don't drop below 9 MB/s for write, and 34MB/s for read. And that's with a bunch of network in the middle.
Desperate for advice. I will try some MTU stuff next. I also tried changing net.inet.tcp.delayed_ack=0, which it now is, didn't make any difference to timings.