Re: [LSF/MM/BPF TOPIC] Generalized data temperature estimation framework

[Bart Van Assche <bvanassche@acm.org>]

On 1/24/25 1:11 PM, Viacheslav Dubeyko wrote:
> On Fri, 2025-01-24 at 12:44 -0800, Bart Van Assche wrote:
>> On 1/23/25 12:33 PM, Viacheslav Dubeyko wrote:
>>> I would like to discuss a generalized data "temperature"
>>> estimation framework.
>>
>> Is data available that shows the effectiveness of this approach and
>> that compares this approach with existing approaches?
> 
> Yes, I did the benchmarking. I can see the quantitative estimation of
> files' temperature.

What has been measured in these benchmarks?

> Which existing approaches would you like to compare?

F2FS has a built-in algorithm for assigning data temperatures.

> And what could we imply by effectiveness of the approach? Do you have
> a vision how we can estimate the effectiveness? :)

Isn't the goal of providing data temperature information to the device
to reduce write amplification (W.A.)? I think that W.A. data would be
useful but I'm not sure whether such data is easy to extract from a
storage device.

Thanks,

Bart.