On 05/07/13 09:39, Sam Bingner wrote:

On 7/4/13 3:13 PM, "Brad Campbell" [off-list ref] wrote:

quoted

On 05/07/13 02:30, Christoph Anton Mitterer wrote:

quoted

When I say max out, I run into bandwidth limits on the hardware before
dmcrypt gets in the way.

That is because your CPU has encryption features - the QNAP devices
largely do not; I replaced the CPU in mine with one that had encryption
features because otherwise there was nothing that could bring the
performance above about 80MB/sec


Once I put in a CPU supporting AESNI I could get up to about 500MB/sec -
and this was still not CPU bound

Yes, of course. I forgot about the dedicated storage device rather than 
a general server. I run dmcrypt on a WD mybook live and get about 8MB/s 
on that (which is enough for what I need).