The 7.3 kernel with the HPSA driver may advertise a higher value for a virtual device with many back-end devices
Issue
7.3 kernel with HPSA driver sees higher max_sectors_kb sizes assigned for the virtual device as number of back-end devices is increased.
This will result in coalescing of I/O so larger I/O is submitted to the device resulting in higher latency per I/O for transaction based workloads.
Environment
7.3 kernel and server with HPSA serving virtual devices with higher back-end device counts will see this larger size assigned on boot for the SCSI HPSA virtual device that the server accesses.
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