Public bug reported:
The current version (UDisks 2.8.2, ubuntu 19.04) of gnome-disks shows
too low write speed for my new nvme m.2 ssd Samsung 970 pro.
It shows write rate 583,6 MB/s but it must be 2.7 GB/s
The read rate is OK (3.3 GB/s).
Results are in attached screenshot.
To make sure that this is not hardware/kernel issue, I used fio
benchmark:
fio --name TEST --eta-newline=5s --filename=fio-tempfile.dat --rw=write
--size=1500m --io_size=10g --blocksize=1024k --ioengine=libaio --fsync=10000
--iodepth=32 --direct=1 --numjobs=1 --runtime=60 --group_reporting
<...>
WRITE: bw=2592MiB/s (2718MB/s), 2592MiB/s-2592MiB/s (2718MB/s-2718MB/s),
io=10.0GiB (10.7GB), run=3950-3950msec
I also compared with the results of the same utility from ubuntu 16.10,
and there the rates are fine (write 2.7 Gb/s, read 3.2 GB/s)
ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: gnome-disk-utility 3.32.1-1ubuntu1
ProcVersionSignature: Ubuntu 5.0.0-20.21-generic 5.0.8
Uname: Linux 5.0.0-20-generic x86_64
ApportVersion: 2.20.10-0ubuntu27.1
Architecture: amd64
CurrentDesktop: Unity:Unity7:ubuntu
Date: Fri Jul 12 21:02:59 2019
InstallationDate: Installed on 2019-05-18 (55 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
SourcePackage: gnome-disk-utility
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-disk-utility (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug disco regression
** Attachment added: "gnome-disks benchmark ubuntu 19.04"
https://bugs.launchpad.net/bugs/1836405/+attachment/5276748/+files/%D0%A1%D0%BD%D0%B8%D0%BC%D0%BE%D0%BA%20%D1%8D%D0%BA%D1%80%D0%B0%D0%BD%D0%B0%20%D0%BE%D1%82%202019-07-12%2021-01-46.png
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https://bugs.launchpad.net/bugs/1836405
Title:
too low write rate by gnome-disks' benchmark
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