Elevator Sorted Write-back - Request for Enhancement
Posted: Sun Dec 08, 2019 8:22 pm
Back in the day, I used DPT caching controller HDA for SCSI. They had a whopping 16MB of cache (and where OMG expensive in the late 80's) . They had a feature of Elevator Sorted Write-back:
From their user manual: "Data is written to disk in order of increasing block address, minimizing both physical disk seeks and rotational latency. This feature, called Elevator Sorted Write-back, eliminates much of the head thrashing commonly associated with disk-intensive operating systems like Novell NetWare, Windows NT and UNIX. By elevator sorting the sectors in cache, the average write access time to the drive may be reduced from the normal 11ms (seek + rotation) time, to between 1 and 5ms."
I think this could be a great feature when writing to spinning disks
I currently use PrimoCache on a 10 y/o PC with 16GB of memory and modern SSDs w/ spinning disks. I can def tell improved performance.
My replacement PC will have PrimoCache in mind for memory capacity and a tiered storage solution.
Thanks in Advance!
From their user manual: "Data is written to disk in order of increasing block address, minimizing both physical disk seeks and rotational latency. This feature, called Elevator Sorted Write-back, eliminates much of the head thrashing commonly associated with disk-intensive operating systems like Novell NetWare, Windows NT and UNIX. By elevator sorting the sectors in cache, the average write access time to the drive may be reduced from the normal 11ms (seek + rotation) time, to between 1 and 5ms."
I think this could be a great feature when writing to spinning disks
I currently use PrimoCache on a 10 y/o PC with 16GB of memory and modern SSDs w/ spinning disks. I can def tell improved performance.
My replacement PC will have PrimoCache in mind for memory capacity and a tiered storage solution.
Thanks in Advance!