The default I/O scheduler queues data to minimize seeks on HDDs, which is not necessary for SSDs. Therefore, make use of the "deadline" scheduler that just makes sure bulk transactions will not slow down small transactions: Install sysfsutils and Consideration: Expanding the flushing interval from the default 5 seconds https://shanefsyfk.ttblogs.com/22584303/an-unbiased-view-of-ssd-trimming