[GitHub] [nuttx] TimJTi commented on issue #9080: littlefs on SD/eMMC read/write performance is poor

["TimJTi (via GitHub)" <gi...@apache.org>]

TimJTi commented on issue #9080:
URL: https://github.com/apache/nuttx/issues/9080#issuecomment-1520019637

   
   > Hi,
   > Utilising the littlefs filesystem on SD/eMMC is providing read/write speeds
   > of approximately 50KiB/sec (calculated using dd command).
   
   I have just tried the same - I have littlfs on GD25 flash memory. It takes 40 seconds to dd a 1.2Mbyte file from that filesystem to /dev/null. That equates to 30KiB/s - on a processor running at 164MHz and flash SPI at 45MHz.
   
   The file is a wav file that should play in 3 seconds...and this might well explain why I've been having issues getting my in-development audio driver to behave, since I am relying on playing this wav file to check it is working!
   
   Doesn't help you right now, but I will look at this later today/tomorrow to see if I can find if there's a reason: and a workaround or fix or whatever. But doesn't sound right, for sure. Might be optimisation or debug levels of course.
   
   TimJTi
   
   
   


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