On 21/8/22 13:34, Grant Taylor wrote:
> On 8/20/22 10:22 PM, William Kenworthy wrote:
> ...

> If that is an Odroid XU4, then I strongly suspect that /dev/sda is 
> passing through a USB interface.  So ... I'd take those numbers with a 
> grain of salt.  --  If the system is working for you, then by all 
> means more power to you.
>
> I found that my Odroid XU4 was /almost/ fast enough to be my daily 
> driver.  But the fan would kick in for some things and I didn't care 
> for the noise of the stock fan.  I've not yet compared contemporary 
> Raspberry Pi 4 or other comparable systems.


Samsung Exynos 5422 is developed on the 28 nm technology node and 
architecture Cortex-A15 / Cortex-A7. Its base clock speed is 1.40 GHz, 
and maximum clock speed in turbo boost - 2.10 GHz. Samsung Exynos 5422 
contains 8 processing cores.

> Instruction set (ISA) 	ARMv7-A32 (32 bit)
> Architecture 	Cortex-A15 / Cortex-A7
>
>
> Yes, its an xu4 and as I mentioned, its a USB drive (seagate 4G backup 
> with an SMR inside) - works ok as a backup drive and the data transfer 
> is fast until you fill the cache - then its throughput is best 
> described as "miserable"!  The xu4 lists as 32bit and odroid supplies 
> a 32 bit kernel etc - I just used their config as a base when building 
> gentoo onto it - its my build (for 5 xu4 based HC2 systems) and hosts 
> the backup drive.  My attaching the hdparm run was an example of its 
> use, and that happened to be the terminal i was using at the time.

BillK