Comments on: NVMe testing under DragonFly https://www.dragonflydigest.com/2017/03/15/nvme-testing-under-dragonfly/ A running description of activity related to DragonFly BSD. Fri, 17 Mar 2017 21:28:16 +0000 hourly 1 https://wordpress.org/?v=6.9.4 By: Matthew Dillon https://www.dragonflydigest.com/2017/03/15/nvme-testing-under-dragonfly/comment-page-1/#comment-486259 Fri, 17 Mar 2017 21:28:16 +0000 https://www.dragonflydigest.com/?p=19458#comment-486259 I just tested the WD Black. I give it a C-. I was actually fine with it until I read the durability was only 80TB (most 256G M.2 SSDs have a durability in excess of 200TB with some clocking in at over 400TB). This is because WD is using Sandisk tech, which is all 2D TLC.

I’ve got the new Plextor and a MyDigitalSSD coming. Those babies aren’t tied to a specific fab but have interesting reviews. The MyDigitalSSD use a Phision controller and the Plextor uses a high-end 8-channel Marvell controller (theoretically with their own firmware and not the Marvell firmware, though its hard to know what that actually means). I think the MyDigitalSSD is using MLC (vendor probably variable) and the Plextor is using TLC (probably Toshiba).

So far Samsung’s offerings are the best, which makes sense because Samsung has the most advanced 3D NAND process. Toshiba’s NAND is supposedly pretty good but tends to run hot. Micron’s new 3D NAND is not really in volume production yet and I don’t see any devices offering it. Intel’s stuff is 3D but old and slow.

-Matt

]]> By: Sepherosa Ziehau https://www.dragonflydigest.com/2017/03/15/nvme-testing-under-dragonfly/comment-page-1/#comment-486256 Fri, 17 Mar 2017 05:52:24 +0000 https://www.dragonflydigest.com/?p=19458#comment-486256 Heh, this is my personal preference :)

]]> By: Ashleigh https://www.dragonflydigest.com/2017/03/15/nvme-testing-under-dragonfly/comment-page-1/#comment-486255 Fri, 17 Mar 2017 04:49:57 +0000 https://www.dragonflydigest.com/?p=19458#comment-486255 @Sepherosa

Jail? Out of all of the subsystems you think jails need the most work

Interesting.

]]> By: Sepherosa Ziehau https://www.dragonflydigest.com/2017/03/15/nvme-testing-under-dragonfly/comment-page-1/#comment-486253 Fri, 17 Mar 2017 02:42:09 +0000 https://www.dragonflydigest.com/?p=19458#comment-486253 jail!

]]> By: Dennis https://www.dragonflydigest.com/2017/03/15/nvme-testing-under-dragonfly/comment-page-1/#comment-486251 Thu, 16 Mar 2017 02:38:13 +0000 https://www.dragonflydigest.com/?p=19458#comment-486251 Sepherosa

Question, not specific to NVME, but in general – what areas of Dragonfly needs more developers working on?

Is there a portion of Dragonfly that could really use some love?

E.g. Security, jails, file system, etc?

]]> By: Sepherosa Ziehau https://www.dragonflydigest.com/2017/03/15/nvme-testing-under-dragonfly/comment-page-1/#comment-486250 Thu, 16 Mar 2017 02:20:07 +0000 https://www.dragonflydigest.com/?p=19458#comment-486250 He bought more NVMe cards to test.

]]> By: Tim https://www.dragonflydigest.com/2017/03/15/nvme-testing-under-dragonfly/comment-page-1/#comment-486249 Thu, 16 Mar 2017 01:52:42 +0000 https://www.dragonflydigest.com/?p=19458#comment-486249 I must have deju Vu because I could have sworn I already read Dillon summary on this before.

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