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Altera_Forum
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15 years ago

copy performance in user space vs. kernel

Hi, I am using Linux 2.6.32 with MMU with DDR SDRAM and I've run into some performance issues copying data. Copying from DDR to DDR using memcpy in an application only gets me 6-10MB/s. Copyi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

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As sdram has long access latency, the total access time can be reduced with sequential access in the same page.

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Should the cache not take care of this ?

-Michel