andrzej-kaczmarek opened a new pull request, #3324:
URL: https://github.com/apache/mynewt-core/pull/3324

   By default value is written to config storage only if it changed since last 
stored value. This however requires that all stored values are read to 
determine last value and in case of conf_save this is done for each saved value 
which can take a lot of time.
   
   This adds option to skip that dup check and simply stores new value. This 
results in much faster writes at the expense of load times as there are more 
copies of the same value stored. Also conf_save will always write all exported 
values so this increase number of writes to flash. However, e.g. in case of 
large FCB used as config storage dup check on write can take much longer than 
simple read or store without dup checks.


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