Hijacking the thread 
I'm on stretch-mate-rock64-0.5.15-136-20171222-arm64 default "ondemand" CPU governor
1gb link MikroTik routerboard + D-Link 1gb switch.
2x Win 10 1gb link on the other side.
Initially my Rock64 managed to work 114MB/s up and 114MB/s down by using eMMC NAND with Samba.
It was 114MB/s up and 63MB/s down over USB HDD.
Something happened, I don't know why, but now it's max 63MB/s up and spikes between 30MB/s and 90MB/s down via NAND. Yes, actually NAND write/download speed is way better than read/upload speed.
USB gone spiking 50MB/s ~ 63MB/s read/upload and 13MB/s ~18MB/s write/download.
During spikes system is like freezing for a second.
I'm suspecting overheating. I've got standard Rock64 recommended radiator and SoC temp 35 ~ 40 when iddle and 52 ~60 degrees when copying over SMB. It happens on 2 different Win 10 1GB LAN speed.
Copying between laptops via SMB share is stable 114MB/s.
I'm going to buy aluminium 2x 20x20x10 heatsink for CPU and GPU + 1x 14z14x6 heatsink for eMMC + 3M thermal adhesive tape and will check any improvement.
I have tried reflashing clean system already.
Any ideas beside heating problem?
Should I try different Linux distribution?
Main purpose of my Rock64 is SMB media server for 4K streaming so fast SMB is priority.
Checked NFS already, and for Windows 10, NFS speed is slower way slower than SMB.
I'm on stretch-mate-rock64-0.5.15-136-20171222-arm64 default "ondemand" CPU governor
1gb link MikroTik routerboard + D-Link 1gb switch.
2x Win 10 1gb link on the other side.
Initially my Rock64 managed to work 114MB/s up and 114MB/s down by using eMMC NAND with Samba.
It was 114MB/s up and 63MB/s down over USB HDD.
Something happened, I don't know why, but now it's max 63MB/s up and spikes between 30MB/s and 90MB/s down via NAND. Yes, actually NAND write/download speed is way better than read/upload speed.
USB gone spiking 50MB/s ~ 63MB/s read/upload and 13MB/s ~18MB/s write/download.
During spikes system is like freezing for a second.
I'm suspecting overheating. I've got standard Rock64 recommended radiator and SoC temp 35 ~ 40 when iddle and 52 ~60 degrees when copying over SMB. It happens on 2 different Win 10 1GB LAN speed.
Copying between laptops via SMB share is stable 114MB/s.
I'm going to buy aluminium 2x 20x20x10 heatsink for CPU and GPU + 1x 14z14x6 heatsink for eMMC + 3M thermal adhesive tape and will check any improvement.
I have tried reflashing clean system already.
Any ideas beside heating problem?
Should I try different Linux distribution?
Main purpose of my Rock64 is SMB media server for 4K streaming so fast SMB is priority.
Checked NFS already, and for Windows 10, NFS speed is slower way slower than SMB.
