Public bug reported:
The uutils version of dd will report 0.0 B/s if the bandwidth of the
data is under roughly around a KB, it should be reporting the correct
amount of bandwidth instead.
You can test this with pv:
$ pv -q -L 256 /dev/urandom | dd of=/dev/null status=progress
3840 bytes (3.8 kB, 3.8 KiB) copied, 15.0834 s, 0.0 B/s^C
As you can see, uutils is reporting 0.0 B/s even though it should be
saying ~0.25 kB/s.
If you try this with gnudd, it works as expected and returns 0.2 kB/s:
$ pv -q -L 256 /dev/urandom | gnudd of=/dev/null status=progress
3584 bytes (3.6 kB, 3.5 KiB) copied, 15 s, 0.2 kB/s^C
0+154 records in
7+0 records out
3584 bytes (3.6 kB, 3.5 KiB) copied, 15.3901 s, 0.2 kB/s
This is my "lsb-release -rd":
Description: Ubuntu 25.10
Release: 25.10
This is my "apt-cache policy rust-coreutils":
rust-coreutils:
Installed: 0.2.2-0ubuntu2.1
Candidate: 0.2.2-0ubuntu2.1
Version table:
*** 0.2.2-0ubuntu2.1 500
500 https://nyc.mirrors.clouvider.net/ubuntu questing-updates/main
amd64 Packages
500 http://security.ubuntu.com/ubuntu questing-security/main amd64
Packages
100 /var/lib/dpkg/status
0.2.2-0ubuntu2 500
500 https://nyc.mirrors.clouvider.net/ubuntu questing/main amd64
Packages
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: rust-coreutils 0.2.2-0ubuntu2.1
ProcVersionSignature: Ubuntu 6.17.0-6.6-generic 6.17.1
Uname: Linux 6.17.0-6-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: XFCE
Date: Sat Nov 29 15:26:29 2025
InstallationDate: Installed on 2025-11-22 (7 days ago)
InstallationMedia: Xubuntu Minimal 25.10 "Questing Quokka" - Release amd64
(20251008.1)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: rust-coreutils
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: rust-coreutils (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug questing
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https://bugs.launchpad.net/bugs/2133442
Title:
dd reporting 0 B/s
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