SMB speed - can i get more?

I guess i have to start with that OMV runs on Proxmox.

Here are my results:

• HDD mounted as IDE device. The output of
  
  Code

  dd if=/dev/zero of=/media/sdftest.dd bs=1M count=10000

  is:
  

  Zitat

  dd: writing `/media/sdftest.dd': No space left on device
  4689+0 records in
  4688+0 records out
  4916547584 bytes (4.9 GB) copied, 41.8926 s, 117 MB/s
  

  
  Indeed i messed the path but still i like the speed and would like have it also for the SMB shares but i get 25MB/s (CPU ~40*) using E1000 NIC and 36MB/s with virtio NIC (CPU ~21*) - writing speed.
  

• HDD mounted as SATA device. The output of
  
  Code

  dd if=/dev/zero of=/media/sdf/test.dd bs=1M count=10000

  is:
  

  Zitat

  10000+0 records in
  10000+0 records out
  10485760000 bytes (10 GB) copied, 90.0267 s, 116 MB/s
  

  
  On the SMB share i get 30MB/s (CPU ~53*) using E1000 NIC and 32MB/s with virtio NIC (CPU ~20*) - writing speed.
  

• HDD mounted as virtio device - nice OMV gets the SMART info! The output of
  
  Code

  dd if=/dev/zero of=/media/sdf/test.dd bs=1M count=10000

  is:
  

  Zitat

  10000+0 records in
  10000+0 records out
  10485760000 bytes (10 GB) copied, 100.369 s, 104 MB/s
  

  
  On the SMB share i get 27MB/s (CPU ~17*) using E1000 NIC and 32MB/s with virtio NIC (CPU ~33*) - writing speed. Read speed is 40MB/s with E1000 NIC (CPU ~ 50%) and 42MB/s with virtio NIC (CPU ~ 24%).
  

* The CPU usage isnt acurate - i am rounding it

Any suggestons how increase the write speed to the SMB shares?

And pardon me if i am posting in the wrong forum!

It turns out that the the problem is in my Fedora box!
Windwos machines can write 3x faster but for some some reason the SMB share is slow for Fedora. Any ideas how to fix it?

NFS works exellent on Fedora.