What&#x27;s the decision behind not testing Samsung with &quot;On On&quot; cache and barriers? Is it so much slower that it&#x27;s not worth testing? Shouldn&#x27;t barriers allow the cache on the disk to &quot;know better&quot; how to organize writes and still be faster than without the cache turned on?<p>The &quot;disk cache&quot; is a disk hardware option (how it uses its own RAM), if I understood, and the barriers are just an option of the FS behavior (software). I&#x27;d expect that the performance penalty to the former is much higher than to the later?