Samba: slow speed after a week

[PaceyIV]

I've got a new problem with my Olimex A20 Lime2 board.

The board doesn't freeze anymore (http://forum.armbian.com/index.php/topic/295-freezing-problem-with-olimex-a20-lime-2/) but after a week I've got a very slow speed using samba: about 300 kbps.

I've tried to restart the smbd service but it doesn't work. The smbd process don't use cpu: < 5 %.

If I restart completely the board, samba start to works again very fast and use the cpu: > 50%.

 

How can I discover where is the problem and how to fix it?

 

I'm using Debian jessie 4.2.6-sunxi, and there are no more updates.

 

 

[tkaiser]

http://linux-sunxi.org/Sunxi_devices_as_NAS#Benchmarking_.2F_Identifying_bottlenecks

 

"Always test from bottom to top" means: Use iperf to identify whether it's network related.

[PaceyIV]

With dd and hdparm I can copy files very fast.

I've tried to use iperf to test the network speed.

 

Test1:

server: Windows 10

client: OlimexA20

Bandwith 47.3 Mbits/sec

 

Test2:

server: OlimexA20

client Windows 10

Bandwith 4.97 MBits/sec

 

What means???

[tkaiser]

What means???

 

At least not related to Samba. Can you elaborate a bit on your network setup? Did you exchanged cabling and/or switch ports already? The performance numbers you posted are really low...

[PaceyIV]

My OlimexA20 and my router have ethernet port with 1000 MBit/s but my notebook has only a 100 Mbit/s port.

I've made the previous tests on wifi: the notebook was a meter far away from my router.

If I use the ethernet port I've got a bandwidth of about 93 Mbit/s using Windows as a server for iperf and only 30/40 Mbit/s when I use Olimex as a server.