Hi, I'm benchmarking my small cluster with HDDs vs HDDs with SSD Journaling. I am using both RADOS bench and Block device (using fio) for testing. I am seeing significant Write performance improvements, as expected. I am however seeing the Reads coming out a bit slower on the SSD Journaling side. They are not terribly different, but sometimes 10% slower. Is that something other folks have also seen, or do I need some settings to be tuned properly? I'm wondering if accessing 2 drives for reads, adds latency and hence the throughput suffers.
Thanks Pankaj
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