Jeremy Nicoll <jn.ml.dbn...@letterboxes.org> wrote: > On Wed, 7 Oct 2020, at 09:39, Hans wrote:
>> I have a little question. Smartctl is telling me, that my ssd drive >> is 6Gb/sec capable, but the actual speed is only 1,5GB/sec. > If your SATA (presumably) connection from the machine to the SSD is a > 6 Gbps one, the maximum data transfer speed in bytes across that > connection would be one eighth of that (as there's 8 bits per byte), > so about 760 MBps. > That's about half of your "1,5GBps". That makes me wonder if your SSD > uses two SATA channels at once - is that even possible? Only with SAS drives. And usually only for redudancy and not for concurrency. I question the benchmark Hans did. Something tells me he either used "hdparm -tT", which is known to misrepresent the speeds on modern drives, or wrote too little data so he was benchmarking the Kernel cache and not the drive. S! -- Sigmentation fault. Core dumped.
