Re:Porting Alpine Linux to RISC-V
by drewg123 on Friday December 21, 2018 @09:56AM
(#18733623)
From [0] above:
The STREAM benchmark [6] was also compiled and executed, confirming that DRAM performance is limited to less than 1.6 GB/s on this platform. It’s unclear if this is a problem with the cache hierarchy, memory controller, or the configuration
of the DDR Controller Control Registers
Wow, that's unspeakably terrible. That's about 10-20% of the b/w one should get from 2400 mem (depending on how many channels the mem controller uses).
I hope this is some simple misconfiguration that can be fixed in firmware or in the kernel.
The STREAM benchmark [6] was also compiled and executed, confirming that DRAM performance is limited to less than 1.6 GB/s on this platform. It’s unclear if this is a problem with the cache hierarchy, memory controller, or the configuration of the DDR Controller Control Registers
Wow, that's unspeakably terrible. That's about 10-20% of the b/w one should get from 2400 mem (depending on how many channels the mem controller uses).
I hope this is some simple misconfiguration that can be fixed in firmware or in the kernel.