[PATCHv10 9/9] scsi: set permanent stream count in block limits
Christoph Hellwig
hch at lst.de
Thu Oct 31 06:02:51 PDT 2024
On Thu, Oct 31, 2024 at 09:19:51AM +0100, Hans Holmberg wrote:
> No. The meta data IO is just 0.1% of all writes, so that we use a
> separate device for that in the benchmark really does not matter.
>
> Since we can achieve a WAF of ~1 for RocksDB on flash, why should we
> be content with another 67% of unwanted device side writes on top of
> that?
>
> It's of course impossible to compare your benchmark figures and mine
> directly since we are using different devices, but hey, we definitely
> have an opportunity here to make significant gains for FDP if we just
> provide the right kernel interfaces.
I'll write code to do a 1:1 single device comparism over the weekend
and Hans will test it once he is back.
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