FreeNAS 8.2 Low network performance in 1 Giga Network

[TheWiz]

Hi,

I have:
NAS Server
Case: Chenbro ES34169
MB: Gigabyte GA-A75N-USB3
CPU: AMD Liano Vision A6-3500
Memory: G-Skill 8GB (2x4GB Kit) DDR3-1600MHz
HD: WD Green 2GB WD20EARS X4
Running: FreeNAS 8.2 on USB - CIFS protocol
Volumes: Raid 5 + UFS (used 91%)
Compression: lzjb

Network
Router: TP-Link WR1043ND
Cable: Cat 5e+6
Wireless: None. All connected with cable.

Desktop
MB: GigaByte GA-Z68X
CPU: Intel i5-2500 3.3GHz
Memory: 8GB
HD: WD Green 3GB WD30EZRX
Running: W7 64Bit

Problem:
While transferring files from my desktop to my NAS or from my laptop to my NAS i get low speed.
At the beginning when the NAS was empty with no data the transfer was 100MB/s after i pass 50% used volume it drop to 60MB/s and now i get 40MB/s.
The biggest problem is my Popcorn Hour A-300 streamer can't play movies from NAS because picture is jumping - low transfer rate.

I don't know what to do. I re-install FreeNAS twice and still no solution.

10X

 

[peterh]

remove data from discs.
As disks fill up data will be more and more fragmented, especially if creation and removal is frequent.
UFS does a decent job of keeping data local, but as disks fill up the ability to place new data
"intelligently" is impossible.
This is not unique for UFS , all filesystems will have difficulties with full disks.

 

[TheWiz]

Can i defrage data?
But the problem is reading also.

All data was copy at ounce. 2 day it take coping 5GB.

 

[peterh]

No you cannot defrag.
When data is located at many places it will affect both reading and writing. The cure is to
leave more free space.


( it ufs and my comment about dedup is not relevant)
*removed*