Quote Originally Posted by Ao1 View Post
What xfer sizes are typically being generated by your database? What is the avg QD? What is the split between random and sequential access? This would really help to understand a workload that the SF controller is able to manage well.
I have only monitored the load with HDDSentinel. The reported load of the SSD is ~5-7% while sustained speed is 3.5-4MB/s. The max theoretical QD for my load cannot be higher than 8, however I believe the average is somewhere between 2 and 4. Block size is 16K and as for sequential/random distribution, I have no idea. However, for small block sizes, I believe there is no difference between sequential/random on Sandforce based SSD, as there is no external buffer.