https://devzone.nordicsemi.com/f/nordic-q-a/82793/speed-up-fds-readHi, I am developing a health wearable and want to store biosignal data into flash and then read at some point. I found that the reading process is relative slow as I tested (about 730 bytes/s). Is there any way to speed up the fds reading processen-USTelligent Community 13Wed, 15 Dec 2021 11:41:07 GMThttps://devzone.nordicsemi.com/thread/343614?ContentTypeID=1Wed, 15 Dec 2021 11:41:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:244f020b-1b9b-4b4d-ba6a-6600195313a9Hung Bui<p>Hi Rjfang,&nbsp;</p> <p>I believe the function that takes the most significant time is the fds_record_find() function. It would loop through the whole file system to look for the next record. I think it&#39;s the challenge when you have a file system. The abstraction and wear levering benefit&nbsp;makes it take longer to find and access the data.&nbsp;</p> <p>How large is your database ? How many records do you have on average ? You may want to consider grouping larger data into one record, hence lower the number of record and can bring the searching time lower.&nbsp;<br /><br />I would suggest to test the timing by flipping a GPIO before and after a function and check how long it would take to complete the function using a logic analyzer/oscilloscope.&nbsp;</p><div style="clear:both;"></div>