Hej Klojum, chewitt and Da Flex,
thank you very much for your statements!
Let me add some details concerning your hints:
- to quantify the issue: I just copied 1.65 GB from stick to disk. It took 86 Minutes. I would expect it about 10 times faster.
- The USB stick is a 128 GB Kingston Data Traveller USB3 device, no year old, moderately used and working full performant at other computers. To have it usable with different systems it is formatted with exFAT. It is only used for reading in this copy process.
- The disk is a Western Digital 4 TB USB3 drive formatted with ext3, 80% used. That should prevent from fragment-troubles. It is working properly at other computers.
- Yes, the RPi2 is not a mega performance star and it shares USB bandwdith with all connected devices but it worked just fine until Day X.
- As I try to remember, Day X could have been the upgrade from LE 9.1 to 9.2.....
Is 9.1 using kernel drivers instead of FUSE or any other different disk-access technology?? Does this change also affect ext3-drives? Is it worth the idea to give a downgrade a try?
- In my understanding disabling the buffering cannot add performance in that dimension (or at all?). Thanks anyway for the explanation.
Thanks,
Boris