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Re: MakeMKV on Raspberry PI (ARM)

Posted: Sun Aug 23, 2020 10:37 pm
by Woodstock
My caution is related to network speed, which can be measured separate from ripping speed. I also tested using a "max firepower" RPi4, with a solid gigabit network connection, and the measured throughput on straight copy operations was not much better than the RPi3B+. And I already know that a 100Mb/s network connection is a limiting factor on MakeMKV read speeds from a USB optical disk.

The CPU has plenty of "power" to read the disks. It might work better with local USB storage than network (less protocol overhead). We can't do REAL tests until Mike compiles it for ARM, though....

Re: MakeMKV on Raspberry PI (ARM)

Posted: Mon Aug 24, 2020 8:28 pm
by donut
I was planning to use a usb bluray drive. I pulled one from another system, and coupled it with the cheapest powered usb sata adapter I could find. It didn't work. I suspect there is not enough power on the usb3.0 port as I also have a ssd plugged in. The adapter worked fine on my windows 7 PC, so I am picking up a powered USB hub for the PI. If that solves the problem, I will see if I can elimiate it with a 4A power supply. I currently only have a 3.5A.

I then ran iperf3 between the pi and another linux box and got good results...
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 1.10 GBytes 942 Mbits/sec 0 sender
[ 5] 0.00-10.00 sec 1.10 GBytes 941 Mbits/sec receiver

I guess I am not following you on the network speed issue. On a separate note, I have a 5 year old 32 bit odroid XU4 with a 2TB ssdhd and a 2.5 GBS usb nic and it gets a solid 2.34 Gbs running iperf3. I am picking up another 2.5 Gbe adapter for the pi to see how it performs. I have a QNAP 5Gbe but I know its going to need that powered usb port, as it is quite a little heater. I'll post another update in a day or two when the parts show up.

Re: MakeMKV on Raspberry PI (ARM)

Posted: Thu Aug 27, 2020 1:57 am
by donut
I just wanted to provide the promised update. I received the powered USB 3.0 hub and a 2.5Gbe adapter. The hub seems to have resolved the power issue I suspected. I am able to play dvds in KODI on the pi now with my LG WH16NS40. I haven't had time to figure out VLC yet...

After recompiling the kernel to add in the updated realtek 8152 driver, the 2.5Gbe adapter is working.
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 2.47 GBytes 2.12 Gbits/sec 2150 sender
[ 5] 0.00-10.00 sec 2.47 GBytes 2.12 Gbits/sec receiver

So yes, I too am waiting to see if an armv7 or arm64 version becomes available.
uname -srvm
Linux 5.4.59-v7l-r8152+ #1 SMP Wed Aug 26 16:18:47 EDT 2020 armv7l

If this happens, I will pick up one of the "approved" external cases for the bluray player from the Ultimate UHD Drives Guide Updated 2020 page. As of right now, it is sitting here naked on my desk. That might allow me to do away with the powered USB hub since I expect the external case and power supply might be providing a 5v supply to the drive. The cheap adapter I picked up is almost certainly relying on 5v from the USB port on the pi, which is under powered.