smbd process high CPU usage => slow/not stable speed

[DHD]

Dear all,

 

I have a file sharing speed problem.

 

I have 2 box:

- XPE: CPU Celeron 3900 | 4GB RAM | chipset H110 | LAN Realtek RTL8111E | Jun's loader v1.1 | DSM 6.0.2-8451 Update 2 | 4TB HDD | btrfs | no encrypt

- DS215j: DSM 6.0.2-8451 Update 2| 4TB HDD | EXT4 | no encrypt

 

All connected to Linksys EA6500 & T460s used for test. Before start, I disable almost packages so CPU/HDD load ~0%.