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outdoorbits / little-backup-box

This software turns a single-board computer into a versatile, pocket-sized backup solution. Especially for digital photography, this is the solution for backing up images and media files on mass storage devices when traveling or at events. Media content can be viewed and rated for the subsequent process.
http://littlebackupbox.com
GNU General Public License v3.0
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Tranfer speed #188

Closed Asturbike closed 1 year ago

Asturbike commented 1 year ago

I am testing with the raspberry pi 4 and several hard disks and pendrives(EXT4) and i always find the same transfer speed. Ex: 12:19:44 | Int. storage | > USB storage | 9 of 115, 38.32MB/s | Time: 00:00:47 | 7.8% >___

Have you exceeded 40 MB/s with any copy option or any special device? I am currently using pendrive 3.0 and also SD card reader 3.0 with these results. Maybe a certain pendrive or SSD option that I am not performing? Thanks

outdoorbits commented 1 year ago

I can confirm this. While USB 3.0 theoretically should make 625 MB/s possible, I get usually also ~40 MB/s. Best speed from internal to my SanDisk Extreme v1 was ~130 MB/s.

If I try a similar command locally on my laptop (using internal ssd nvme0n1p4): rsync -avh --info=FLIST0,PROGRESS2 --mkpath --no-perms --stats --min-size=1 ./tmp ./tmp2 I also won't get much more than 280 MB/s. Any idea?

Asturbike commented 1 year ago

I'm testing using an external ssd hard disk instead of micro sd

the operating system is faster, I will continue to report how lbb behaves.

Asturbike commented 1 year ago

I currently have a raspberry pi 4 with the operating system on a ssd 2.0 disk and the transfer speed is:

dd if=/dev/zero of=test.img bs=1M count=1024 status=progress 1069547520 bytes (1.1 GB, 1020 MiB) copied, 25 s, 42.8 MB/s 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 33.2713 s, 32.3 MB/s.

I tried to use my ssd disk with the 3.0 port of the raspberry but it does not boot, it only works when I connect it to the 2.0 port.

I am preparing a trip in which I need lbb to work perfectly so I will be all this month testing and configuring it as best as possible for me, thank you very much for your work.

outdoorbits commented 1 year ago

But your SSD should work if you connect it to USB 3.0 after booting?

Asturbike commented 1 year ago

I have a 3.0 hard drive enclosure but it only works plugged into the USB 2.0 port. On other pcs with 3.0 port it works. I don't use sd card, the Raspberry Pi only uses the SSD to load the operating system.

outdoorbits commented 1 year ago

I have no experience booting the Pi from USB devices. But I couldn't find a restriction regarding the USB 3.0 ports either...

Maybe I'm being overcautious, but a power outage or system crash at the wrong time could cause the system to become unbootable on the next start. In my countless tests I have had this situation several times - and in one case also on a trip. Then a new installation was necessary. If the data and the system are on the same medium, a new installation also costs the data. Based on this consideration, I always take at least two fully installed SD cards with me when traveling. Last summer in Greece, that was my luck!