Comment on Unmapped I/O improves userland direct disk performance by 35% ~ 135%parentComments−rodgerd10yThey'll have caught up enough when they have I/O coprocessors as general as Channel I/O.Modern Zs have largely removed I/O copros - none of the Z9 through Z12 have dedicated offload for DASD.−nickpsecurity10yAppreciate the tip. In that case, the servers could get ahead of them especially if they use simplified cores for interrupt-heavy processing and HW acceleration for algorithm/protocol state machines that rarely change.
Comments
Modern Zs have largely removed I/O copros - none of the Z9 through Z12 have dedicated offload for DASD.
Appreciate the tip. In that case, the servers could get ahead of them especially if they use simplified cores for interrupt-heavy processing and HW acceleration for algorithm/protocol state machines that rarely change.