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Flash? Nu-uh. Windows 11 users complain of slow NVMe SSD performance

(2021/12/08)


Users of Windows 11 are complaining about slow write speeds on NVMe SSD drives, a problem which persists even though it was acknowledged by a Microsoft engineer three months ago.

[1]

Samsung NVMe SSD drives are among those reported to be slow on Windows 11

NVMe (Non-Volatile Memory Express) is storage protocol that uses PCIe (PCI Express) to connect to the CPU, with more than twice the bandwidth of SATA interfaces and support for multiple I/O queues.

The problem was [2]reported on Reddit at least three months ago, before the official launch of Windows 11 in October, with a user showing that on a 4K 64 thread write test, measuring the ability to write 64 4K files in parallel, Window 10 reported 1,600MB/s but Windows 11 could only manage 91MB/s. "I am on the Microsoft file systems team and am investigating this issue," said the first comment.

Another user reported more severe issues, with "4K IOPS write down by 7 times," using the popular CrystalMark benchmarking tool.

Nailing down the exact reasons for the drop in the performance is challenging. A few days ago, a user [3]reported a 60 per cent drop in random write performance with a Samsung EVO 980 Pro, but no issue with an EVO 970 Plus installed on the same PC.

[4]

Another user with a 980 Pro [5]stated that "I can confirm the issue apparently is only present on the primary drive that is running Windows 11," adding: "I regret upgrading to Windows 11."

[6]

[7]

Some users are finding that disabling VBS (Virtualization Based Security, described [8]here ) improves matters – which should not be interpreted as a recommendation to do so.

[9]Windows 11 in detail: Incremental upgrade spoilt by onerous system requirements and usability mis-steps

[10]Seagate demos hard disk drive with an NVMe interface. Yup, one with spinning platters

[11]VMware imagines 'memory servers' – a new source of shared software-defined RAM

[12]Lenovo ThinkPad T14s: Impressively average, which is how corporate buyers like it

Some have reported improvement by upgrading the EVO firmware, others say it has made no difference. It may be a matter of waiting for driver updates.

As an aside, we have been running Windows 11 since the launch and on the plus side, it is stable, the [13]rounded corners and refreshed appearance looks nice, and most applications run equally well as on Windows 10.

That said, it remains hard to find new features that make it worth upgrading, other than perhaps [14]Android support if relevant. On the negative side, the inferior taskbar and Start menu remain an annoyance, as does the revamped right-click menu in Explorer (though there is a registry hack to remove it). ®

Get our [15]Tech Resources



[1] https://regmedia.co.uk/2021/12/08/samsung-ssd.jpg

[2] https://www.reddit.com/r/Windows11/comments/pizp74/anyone_else_noticed_nvme_4k_write_speeds_almost/

[3] https://www.reddit.com/r/Windows11/comments/pizp74/comment/hmv76l7/?utm_source=reddit&utm_medium=web2x&context=3

[4] https://pubads.g.doubleclick.net/gampad/jump?co=1&iu=/6978/reg_onprem/storage&sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&tile=2&c=2YbDkxfpzfS4kGTylVksI1wAAAEc&t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0

[5] https://answers.microsoft.com/en-us/windows/forum/all/windows-11-only-has-45-of-random-write-speed-in/4de7b84f-5d43-4eb1-9036-f8d3b8f36837

[6] https://pubads.g.doubleclick.net/gampad/jump?co=1&iu=/6978/reg_onprem/storage&sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&tile=4&c=44YbDkxfpzfS4kGTylVksI1wAAAEc&t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0

[7] https://pubads.g.doubleclick.net/gampad/jump?co=1&iu=/6978/reg_onprem/storage&sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&tile=3&c=33YbDkxfpzfS4kGTylVksI1wAAAEc&t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0

[8] https://docs.microsoft.com/en-us/windows-hardware/design/device-experiences/oem-vbs

[9] https://www.theregister.com/2021/10/05/windows_11_in_detail/

[10] https://www.theregister.com/2021/11/17/seagate_nvme_drive/

[11] https://www.theregister.com/2021/10/11/vmware_project_capitola_explained/

[12] https://www.theregister.com/2021/11/24/lenovo_t14s/

[13] https://www.theregister.com/2021/10/05/windows_11_in_detail/

[14] https://www.theregister.com/2021/10/29/windows_subsystem_for_android_hands_on/

[15] https://whitepapers.theregister.com/



msobkow

Boy, they sure shipped that mess with a lot of "known" issues.

When you have THAT many "known" issues it isn't ready for production!!!

Someone needs to take an aluminum clue bat to the side of their CEO's head...

mattaw2001

Its the ghost of Christmas Past - VISTA all over again.

I wonder if its the DRM again, same as the IRQ storm from networking when playing back audio on VISTA (the problem gimped a 1gb link to <100mb only when playing music)..

mattaw2001

For those interested here is no less than Mark Russinovich's blog post on his investigation of it:

https://web.archive.org/web/20121111114409/http://blogs.technet.com/b/markrussinovich/archive/2007/08/27/1833290.aspx

Seems VISTA shipped with a hardcoded network limiter to deal with vista's inability to schedule threads to avoid audio glitching, which was applied no matter how powerful your computer was.

Hubert Cumberdale

I'm glad people have already started to find registry hacks to thwart 11's embuggerances. I'm still going to stick with 10 until I absolutely can't, though.

Swordfish1

Same old crap from MS - its bad enough, they are no supporting, first generation Ryzen processors, with systems that more than able to support Windows 11

Sod of MS, your degenerating into a cash cow.

Perhaps, finally, I'm going to move our network over to a LInux based system.

Sick and tired of MS promising this and that, and are oblivious , to the concerns raised on the Insider program

Are they deaf, blind, or just stupidly ignorant

Me I'm fed up with their excuses, wasting my time, EVERYTIME, they botch up updates, and an update of an update

CS

Wait for Windows 12, I guess

fidodogbreath

Seems like Microsoft is maintaining its tradition that every other major Windows release is, um, sub-optimal.

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