On 7/2/2014 8:59 AM, Greg Freemyer wrote:
All,
I happened to run a USB3 throughput test recently and it wrote 5 TB in 7 hours. I used a USB3 hub to let me hook up 5 1 TB drives and wrote to them simultaneously.
That's about 200 MB / sec.
It's the first time I've ever apparently saturated USB3. Does anyone know if 200MB / sec is a good max USB3 throughput?
fyi: Per the spec, it should be possible to hit 500MB/sec., but real world seldom hits the spec limits so 200MB/sec may be as good as it gets. If not, I may need to look for a better USB3 hub. (I do a lot of high bandwidth transfers in my job.)
Greg -- Greg Freemyer
Using what method did you write to 5 drives simultaneously? Best I know, is that you can send data to ONE usb device at a time based on the addressing scheme, and sending to 5 required 5 send operations each with a different address. Multicasting exists for control operations (everybody wake up) but not transfers. Also, there are many different data transfer modes, and if your software supported synchronous mode you get much better speed than with polled (quick removal) mode. -- _____________________________________ ---This space for rent--- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org