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A comment on Arm Announces Cortex-R82: First 64-Bit Real Time Processor. Parent comment

Re:Arm Announces Cortex-R82: First 64-Bit Real Time Processor by Klinky on Monday September 07, 2020 @03:44PM (#24402103)
What benefit do you believe this is going to bring SSDs? They are full of DRAM buffers and utilize multiple simultaneous NAND channels to mask latency inherent to the tech. It seems a realtime processor would bring little to the table.

Edit: Well looking into it a bit, a lot of SSDs already use realtime ARM processors in their controllers. The main benefit here seems to be being able to address larger buffer sizes going forward and access to more cores.

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Re:Arm Announces Cortex-R82: First 64-Bit Real Time Processor by wtallis on Monday September 07, 2020 @04:17PM (#24402416)
Not having to work around the limitations of 32-bit addressing is a convenience, but the industry has produced 4+ TB SSDs with 4+ GB of DRAM for quite a while now without this core.

The real demand for a core like this in SSD controllers comes from doing more computationally expensive work on the SSD controller than just providing a block storage device abstraction. Stuff like embedding a full key-value database on the SSD or providing more general-purpose compute capability is a hot topic for enterprise storage. There's already at least one company shipping an SSD controller for computational storage with a mix of realtime cores and Cortex-A53 cores. The Cortex-R82 means such a chip could be more homogeneous with just one type of ARM core.

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Re:Arm Announces Cortex-R82: First 64-Bit Real Time Processor by dmix on Tuesday September 08, 2020 @12:57AM (#24405333)
From another article:

> With approximately 85% market share of storage processors, this is an important market for Arm.

https://www.forbes.com/sites/tiriasresearch/2020/09/03/arm-c...

Not sure what that means in practice though, this is out of my scope.

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