BeagleBone slow inbound net I/O

[Brett Wynkoop]

Greeting-

So I am finding that network reads from my nfs server are timing out on
the BeagleBone.  I am having no similar issues with other nfs clients
on my network.  

In an attempt to eliminate NFS as a possible reason for slowness of
transferring the ports tree into the system I am now transferring by
piping tar through nc.  This is after I had a failure with rsync
inbound on the same data.  The transfer is going VERY slow.  Many times
slower than my transfers out of the BB to my 10.1 server.

Have I managed to find a network driver issue?  Any ideas how to gather
more information to help get to the bottom of things?

Netstat seems to provide nothing useful:

[wynkoop at beaglebone ~]$ netstat -i
Name    Mtu Network       Address              Ipkts Ierrs Idrop    Opkts Oerrs  Coll
cpsw0  1500 <Link#1>      00:18:31:8c:a5:22        0     0     0        0     0     0
cpsw0     - 199.89.147.0  beaglebone            1117     -     -      511     -     -
lo0   16384 <Link#2>                              36     0     0       36     0     0
lo0       - localhost     ::1                      0     -     -        0     -     -
lo0       - fe80::1%lo0   fe80::1%lo0              0     -     -        0     -     -
lo0       - your-net      localhost               36     -     -       36     -     -
[wynkoop at beaglebone ~]$ 

I do not believe the transfer is limited by disk i/o because 
zpool iostat 5 shows inferior speed as compared to when I did the copy from 
the sd card to the usb stick.

[wynkoop at beaglebone ~]$ zpool iostat 5
               capacity     operations    bandwidth
pool        alloc   free   read  write   read  write
----------  -----  -----  -----  -----  -----  -----
bbexport     283M  14.1G      0      0    787  1.15K
bbexport     283M  14.1G      0      5      0  28.1K
bbexport     283M  14.1G      0      0      0      0
bbexport     283M  14.1G      0      0      0      0
bbexport     283M  14.1G      0      5      0  28.2K
bbexport     283M  14.1G      0      0      0      0
bbexport     283M  14.1G      0      0      0      0
bbexport     283M  14.1G      0      6      0  29.6K
bbexport     283M  14.1G      0      0      0      0
bbexport     283M  14.1G      0      0      0      0
bbexport     283M  14.1G      0      5      0  29.5K
bbexport     283M  14.1G      0      0      0      0


-Brett
-- 

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