From: Christoph Hellwig <[email protected]>
To: Hans Holmberg <[email protected]>
Cc: Keith Busch <[email protected]>, Christoph Hellwig <[email protected]>,
Keith Busch <[email protected]>,
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
Hannes Reinecke <[email protected]>
Subject: Re: [PATCHv10 9/9] scsi: set permanent stream count in block limits
Date: Thu, 31 Oct 2024 14:02:51 +0100 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <CANr-nt35zoSijRXYr+ommmWGfq0+Ye0tf3SfHfwi0cfpvwB0pg@mail.gmail.com>
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.
next prev parent reply other threads:[~2024-10-31 13:03 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-29 15:19 [PATCHv10 0/9] write hints with nvme fdp, scsi streams Keith Busch
2024-10-29 15:19 ` [PATCHv10 1/9] block: use generic u16 for write hints Keith Busch
2024-10-29 17:21 ` Bart Van Assche
2024-10-29 15:19 ` [PATCHv10 2/9] block: introduce max_write_hints queue limit Keith Busch
2024-10-29 15:19 ` [PATCHv10 3/9] statx: add write hint information Keith Busch
2024-10-29 15:19 ` [PATCHv10 4/9] block: allow ability to limit partition write hints Keith Busch
2024-10-29 15:23 ` Christoph Hellwig
2024-10-29 17:25 ` Bart Van Assche
2024-10-30 4:46 ` Christoph Hellwig
2024-10-30 20:11 ` Keith Busch
2024-10-30 20:26 ` Bart Van Assche
2024-10-30 20:37 ` Keith Busch
2024-10-30 21:15 ` Bart Van Assche
2024-10-29 15:19 ` [PATCHv10 5/9] block, fs: add write hint to kiocb Keith Busch
2024-10-29 15:19 ` [PATCHv10 6/9] io_uring: enable per-io hinting capability Keith Busch
2024-11-07 2:09 ` Jens Axboe
2024-10-29 15:19 ` [PATCHv10 7/9] block: export placement hint feature Keith Busch
2024-10-29 15:19 ` [PATCHv10 8/9] nvme: enable FDP support Keith Busch
2024-10-30 0:24 ` Chaitanya Kulkarni
2024-10-29 15:19 ` [PATCHv10 9/9] scsi: set permanent stream count in block limits Keith Busch
2024-10-29 15:26 ` Christoph Hellwig
2024-10-29 15:34 ` Keith Busch
2024-10-29 15:37 ` Christoph Hellwig
2024-10-29 15:38 ` Keith Busch
2024-10-29 15:53 ` Christoph Hellwig
2024-10-29 16:22 ` Keith Busch
2024-10-30 4:55 ` Christoph Hellwig
2024-10-30 15:41 ` Keith Busch
2024-10-30 15:45 ` Christoph Hellwig
2024-10-30 15:48 ` Keith Busch
2024-10-30 15:50 ` Christoph Hellwig
2024-10-30 16:42 ` Keith Busch
2024-10-30 16:57 ` Christoph Hellwig
2024-10-30 17:05 ` Keith Busch
2024-10-30 17:15 ` Christoph Hellwig
2024-10-30 17:23 ` Keith Busch
2024-10-30 22:32 ` Keith Busch
2024-10-31 8:19 ` Hans Holmberg
2024-10-31 13:02 ` Christoph Hellwig [this message]
2024-10-31 14:06 ` Keith Busch
2024-11-01 7:16 ` Hans Holmberg
2024-11-01 8:19 ` Javier González
2024-11-01 14:49 ` Keith Busch
2024-11-06 14:26 ` Hans Holmberg
2024-10-30 16:59 ` Bart Van Assche
2024-10-30 17:14 ` Christoph Hellwig
2024-10-30 17:44 ` Bart Van Assche
2024-11-01 1:03 ` Jaegeuk Kim
2024-10-29 17:18 ` Bart Van Assche
2024-10-30 5:42 ` Christoph Hellwig
2024-10-29 15:24 ` [PATCHv10 0/9] write hints with nvme fdp, scsi streams Christoph Hellwig
2024-11-05 15:50 ` Christoph Hellwig
2024-11-06 18:36 ` Keith Busch
2024-11-07 20:36 ` Keith Busch
2024-11-08 14:18 ` Christoph Hellwig
2024-11-08 15:51 ` Keith Busch
2024-11-08 16:54 ` Matthew Wilcox
2024-11-08 17:43 ` Javier Gonzalez
2024-11-08 18:51 ` Bart Van Assche
2024-11-11 9:31 ` Javier Gonzalez
2024-11-11 17:45 ` Bart Van Assche
2024-11-12 13:52 ` Nitesh Shetty
2024-11-19 2:03 ` Martin K. Petersen
2024-11-11 6:51 ` Christoph Hellwig
2024-11-11 9:30 ` Javier Gonzalez
2024-11-11 9:37 ` Johannes Thumshirn
2024-11-11 9:41 ` Javier Gonzalez
2024-11-11 9:42 ` hch
2024-11-11 9:43 ` Johannes Thumshirn
2024-11-11 10:37 ` Javier Gonzalez
2024-11-11 6:49 ` Christoph Hellwig
2024-11-11 6:48 ` Christoph Hellwig
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