Re: [PATCH v7 0/3] FDP and per-io hints

Nitesh Shetty
2024-10-09T16:37:36Z

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On 09/10/24 11:28AM, Christoph Hellwig wrote:
>On Tue, Oct 08, 2024 at 08:44:28AM -0600, Keith Busch wrote:
>> Then let's just continue with patches 1 and 2. They introduce no new
>> user or kernel APIs, and people have already reported improvements using
>> it.
>
>They are still not any way actually exposing the FDP functionality
>in the standard though. How is your application going to align
>anything to the reclaim unit? Or is this another of the cases where
>as a hyperscaler you just "know" from the data sheet?

I think Keith already[1] mentioned a couple of times in previous replies,
this is an optional feature, if experiments doesn't give better
results, FDP hints can be disabled.

>
>But also given that the submitter completely disappeared and refuses
>to even discuss his patches I thing they are simply abandonware at
>this point anyway.

Kanchan is away due to personal reasons, he is expected to be back in a
week or so.

Regards,
Nitesh Shetty

[1] https://lore.kernel.org/all/ZmjSwfD1IqX-ADtL@kbusch-mbp.dhcp.thefacebook.com/

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