Bob Proulx <b...@proulx.com> wrote: > I don't know about the new Raspberry quad core. Does it have the same > limited usb chip as the original?
It does. But because the CPU is more powerful (and you have 4 cores) you can squeeze about 95MBit/s out of it. Right now I am dd'ing a 600MB file over NFS (the Raspi2 is the client) to /dev/null and the transfer rate (measured on the server) is stable at 96.7MBite/s, but one core is fully occupied with the transfer and the dd-process is mostly in the D-state and does not use much CPU at all (about 1% according to top). Final results: (with not special blocksize setting): 1273709+1 records in 1273709+1 records out 652139386 bytes (621.9MB) copied, 55.460434 seconds, 11.2MB/s real 0m 55.46s user 0m 0.75s sys 0m 6.31s (with bs=4M): 155+1 records in 155+1 records out 652139386 bytes (621.9MB) copied, 55.431787 seconds, 11.2MB/s real 0m 55.44s user 0m 0.00s sys 0m 2.68s Copying the same file to the SDHC card takes a little bit longer, but not much: real 1m 1.91s user 0m 0.13s sys 0m 8.12s Grüße, Sven. -- Sigmentation fault. Core dumped. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/2bna0mm4b...@mids.svenhartge.de