by nicola for livenet research

Performance zfs

ssh performance

https://famzah.files.wordpress.com/2015/06/openssh-ciphers-performance-2015-chart.jpg

choose correct value ashift
understanding aio mode

==option of qemu== *

native or threads
qemu disk with win10 performance

http://turlucode.com/qemu-disk-io-performance-comparison-native-or-threads-windows-10-version/

initramfs

https://github.com/zfsonlinux/zfs/issues/6264

promblems

https://helpful.knobs-dials.com/index.php/INFO:_task_blocked_for_more_than_120_seconds.