Did you solve the issue?   My transfer speed isn't as low as yours, but I think it should be better. What I did:   a) If found in this thread a hint how to install iostat. So I did the following to install it: cd /mnt/user/Marc wget http://slackware.cs.utah.edu/pub/slackware/slackware64-14.2/slackware64/ap/sysstat-11.2.1.1-x86_64-1.txz upgradepkg --install-new sysstat-11.2.1.1-x86_64-1.txz   b) Started iostat as follows: watch -t -n 0.1 iostat -d