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Posts: 2
Registered: ‎06-25-2015

Why is the random write performance for record size 8-128 kB slower compared with record size 4 kB?

Hello,

 

What is the reason that the random write performance with a record size of 8, 16, 32, 64 and 128 kB is slower as with 4 kB record size?

 

This phenomenon occurs with many SD cards of different manufacturers. Not only San Disk. 


http://stackoverflow.com/questions/30935784/why-does-the-sd-card-random-write-performance-for-record...

 

Is this phenomenon caused by the number of AUs (segments) the controller caches? 

 

Best Regards

   Christian Baun

Highlighted
Newbie
Posts: 2
Registered: ‎06-25-2015

Re: Why is the random write performance for record size 8-128 kB slower compared with record size 4

Hello.

 

Up to now I was not able to find a correct answer for the question.

 

Has anybody here in this forum a deep knowledge about the way, how NAND flash controllers in SD cards operate?

 

:-)

 

Best Regards

  Christian Baun