Public bug reported:
Hello,
My experience with iwd on Ubuntu 20.10 was globally positive regarding
the connection to APs!
But I had to revert back to wpa_supplicant: on my Dell XPS 13 9370 I
noticed that every ~25 or 30 seconds, the delay between my laptop and my
AP increased up to 1500ms for 3 to 4 seconds:
64 bytes from 192.168.178.1: icmp_seq=1 ttl=64 time=12.6 ms
64 bytes from 192.168.178.1: icmp_seq=2 ttl=64 time=2.04 ms
64 bytes from 192.168.178.1: icmp_seq=3 ttl=64 time=2.13 ms
64 bytes from 192.168.178.1: icmp_seq=4 ttl=64 time=9.10 ms
64 bytes from 192.168.178.1: icmp_seq=5 ttl=64 time=2.28 ms
64 bytes from 192.168.178.1: icmp_seq=6 ttl=64 time=68.9 ms
64 bytes from 192.168.178.1: icmp_seq=7 ttl=64 time=4.89 ms
64 bytes from 192.168.178.1: icmp_seq=8 ttl=64 time=1106 ms
64 bytes from 192.168.178.1: icmp_seq=9 ttl=64 time=1583 ms
64 bytes from 192.168.178.1: icmp_seq=10 ttl=64 time=1297 ms
64 bytes from 192.168.178.1: icmp_seq=11 ttl=64 time=362 ms
64 bytes from 192.168.178.1: icmp_seq=12 ttl=64 time=2.13 ms
64 bytes from 192.168.178.1: icmp_seq=13 ttl=64 time=2.03 ms
64 bytes from 192.168.178.1: icmp_seq=14 ttl=64 time=2.07 ms
64 bytes from 192.168.178.1: icmp_seq=15 ttl=64 time=2.10 ms
64 bytes from 192.168.178.1: icmp_seq=16 ttl=64 time=2.09 ms
64 bytes from 192.168.178.1: icmp_seq=17 ttl=64 time=3.97 ms
64 bytes from 192.168.178.1: icmp_seq=18 ttl=64 time=3.65 ms
64 bytes from 192.168.178.1: icmp_seq=19 ttl=64 time=2.09 ms
64 bytes from 192.168.178.1: icmp_seq=20 ttl=64 time=1.96 ms
64 bytes from 192.168.178.1: icmp_seq=21 ttl=64 time=2.51 ms
64 bytes from 192.168.178.1: icmp_seq=22 ttl=64 time=2.06 ms
64 bytes from 192.168.178.1: icmp_seq=23 ttl=64 time=2.40 ms
64 bytes from 192.168.178.1: icmp_seq=24 ttl=64 time=2.24 ms
64 bytes from 192.168.178.1: icmp_seq=25 ttl=64 time=2.39 ms
64 bytes from 192.168.178.1: icmp_seq=26 ttl=64 time=2.25 ms
64 bytes from 192.168.178.1: icmp_seq=27 ttl=64 time=12.9 ms
64 bytes from 192.168.178.1: icmp_seq=28 ttl=64 time=2.13 ms
64 bytes from 192.168.178.1: icmp_seq=29 ttl=64 time=2.12 ms
64 bytes from 192.168.178.1: icmp_seq=30 ttl=64 time=7.94 ms
64 bytes from 192.168.178.1: icmp_seq=31 ttl=64 time=2.46 ms
64 bytes from 192.168.178.1: icmp_seq=32 ttl=64 time=27.1 ms
64 bytes from 192.168.178.1: icmp_seq=33 ttl=64 time=208 ms
64 bytes from 192.168.178.1: icmp_seq=34 ttl=64 time=284 ms
64 bytes from 192.168.178.1: icmp_seq=35 ttl=64 time=279 ms
64 bytes from 192.168.178.1: icmp_seq=36 ttl=64 time=310 ms
64 bytes from 192.168.178.1: icmp_seq=37 ttl=64 time=203 ms
64 bytes from 192.168.178.1: icmp_seq=38 ttl=64 time=2.11 ms
64 bytes from 192.168.178.1: icmp_seq=39 ttl=64 time=2.11 ms
64 bytes from 192.168.178.1: icmp_seq=40 ttl=64 time=2.95 ms
64 bytes from 192.168.178.1: icmp_seq=41 ttl=64 time=2.01 ms
64 bytes from 192.168.178.1: icmp_seq=42 ttl=64 time=2.52 ms
64 bytes from 192.168.178.1: icmp_seq=43 ttl=64 time=2.04 ms
64 bytes from 192.168.178.1: icmp_seq=44 ttl=64 time=2.06 ms
64 bytes from 192.168.178.1: icmp_seq=45 ttl=64 time=2.10 ms
64 bytes from 192.168.178.1: icmp_seq=46 ttl=64 time=2.09 ms
64 bytes from 192.168.178.1: icmp_seq=47 ttl=64 time=2.11 ms
64 bytes from 192.168.178.1: icmp_seq=48 ttl=64 time=1.55 ms
64 bytes from 192.168.178.1: icmp_seq=49 ttl=64 time=2.06 ms
64 bytes from 192.168.178.1: icmp_seq=50 ttl=64 time=2.00 ms
64 bytes from 192.168.178.1: icmp_seq=51 ttl=64 time=2.35 ms
64 bytes from 192.168.178.1: icmp_seq=52 ttl=64 time=2.07 ms
64 bytes from 192.168.178.1: icmp_seq=53 ttl=64 time=2.20 ms
64 bytes from 192.168.178.1: icmp_seq=54 ttl=64 time=2.08 ms
64 bytes from 192.168.178.1: icmp_seq=55 ttl=64 time=2.22 ms
64 bytes from 192.168.178.1: icmp_seq=56 ttl=64 time=1.55 ms
64 bytes from 192.168.178.1: icmp_seq=57 ttl=64 time=2.10 ms
64 bytes from 192.168.178.1: icmp_seq=58 ttl=64 time=19.0 ms
64 bytes from 192.168.178.1: icmp_seq=59 ttl=64 time=221 ms
64 bytes from 192.168.178.1: icmp_seq=60 ttl=64 time=1091 ms
64 bytes from 192.168.178.1: icmp_seq=61 ttl=64 time=1100 ms
64 bytes from 192.168.178.1: icmp_seq=62 ttl=64 time=1123 ms
64 bytes from 192.168.178.1: icmp_seq=63 ttl=64 time=272 ms
64 bytes from 192.168.178.1: icmp_seq=64 ttl=64 time=2.43 ms
64 bytes from 192.168.178.1: icmp_seq=65 ttl=64 time=2.09 ms
64 bytes from 192.168.178.1: icmp_seq=66 ttl=64 time=18.4 ms
64 bytes from 192.168.178.1: icmp_seq=67 ttl=64 time=2.01 ms
64 bytes from 192.168.178.1: icmp_seq=68 ttl=64 time=2.70 ms
64 bytes from 192.168.178.1: icmp_seq=69 ttl=64 time=4.13 ms
64 bytes from 192.168.178.1: icmp_seq=70 ttl=64 time=2.26 ms
64 bytes from 192.168.178.1: icmp_seq=71 ttl=64 time=2.06 ms
64 bytes from 192.168.178.1: icmp_seq=72 ttl=64 time=2.24 ms
(...)
It is not always that high (1500ms) but can be around 150ms.
This is quite problematic during meetings. I reverted back to
wpa_supplicant and I no longer have these big delays. With
wpa_supplicant, it goes from 2ms to 25/30ms every ~10 seconds for 2
seconds.
I suspect a scan is periodically done and cause these delays. I didn’t
investigate why I have this with iwd only.
Cheers,
Matt
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu45
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.10
InstallationDate: Installed on 2019-03-05 (545 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20190226)
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
Package: iwd 1.8-1
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Tags: groovy wayland-session
Uname: Linux 5.4.0-42-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip docker libvirt lpadmin plugdev sambashare sudo
_MarkForUpload: True
modified.conffile..etc.default.apport: [modified]
mtime.conffile..etc.default.apport: 2019-03-07T15:35:26.455785
** Affects: iwd (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-collected groovy wayland-session
** Tags added: apport-collected groovy wayland-session
** Description changed:
Hello,
My experience with iwd on Ubuntu 20.10 was globally positive regarding
the connection to APs!
But I had to revert back to wpa_supplicant: on my Dell XPS 13 9370 I
noticed that every ~25 or 30 seconds, the delay between my laptop and my
AP increased up to 1500ms for 3 to 4 seconds:
64 bytes from 192.168.178.1: icmp_seq=1 ttl=64 time=12.6 ms
64 bytes from 192.168.178.1: icmp_seq=2 ttl=64 time=2.04 ms
64 bytes from 192.168.178.1: icmp_seq=3 ttl=64 time=2.13 ms
64 bytes from 192.168.178.1: icmp_seq=4 ttl=64 time=9.10 ms
64 bytes from 192.168.178.1: icmp_seq=5 ttl=64 time=2.28 ms
64 bytes from 192.168.178.1: icmp_seq=6 ttl=64 time=68.9 ms
64 bytes from 192.168.178.1: icmp_seq=7 ttl=64 time=4.89 ms
64 bytes from 192.168.178.1: icmp_seq=8 ttl=64 time=1106 ms
64 bytes from 192.168.178.1: icmp_seq=9 ttl=64 time=1583 ms
64 bytes from 192.168.178.1: icmp_seq=10 ttl=64 time=1297 ms
64 bytes from 192.168.178.1: icmp_seq=11 ttl=64 time=362 ms
64 bytes from 192.168.178.1: icmp_seq=12 ttl=64 time=2.13 ms
64 bytes from 192.168.178.1: icmp_seq=13 ttl=64 time=2.03 ms
64 bytes from 192.168.178.1: icmp_seq=14 ttl=64 time=2.07 ms
64 bytes from 192.168.178.1: icmp_seq=15 ttl=64 time=2.10 ms
64 bytes from 192.168.178.1: icmp_seq=16 ttl=64 time=2.09 ms
64 bytes from 192.168.178.1: icmp_seq=17 ttl=64 time=3.97 ms
64 bytes from 192.168.178.1: icmp_seq=18 ttl=64 time=3.65 ms
64 bytes from 192.168.178.1: icmp_seq=19 ttl=64 time=2.09 ms
64 bytes from 192.168.178.1: icmp_seq=20 ttl=64 time=1.96 ms
64 bytes from 192.168.178.1: icmp_seq=21 ttl=64 time=2.51 ms
64 bytes from 192.168.178.1: icmp_seq=22 ttl=64 time=2.06 ms
64 bytes from 192.168.178.1: icmp_seq=23 ttl=64 time=2.40 ms
64 bytes from 192.168.178.1: icmp_seq=24 ttl=64 time=2.24 ms
64 bytes from 192.168.178.1: icmp_seq=25 ttl=64 time=2.39 ms
64 bytes from 192.168.178.1: icmp_seq=26 ttl=64 time=2.25 ms
64 bytes from 192.168.178.1: icmp_seq=27 ttl=64 time=12.9 ms
64 bytes from 192.168.178.1: icmp_seq=28 ttl=64 time=2.13 ms
64 bytes from 192.168.178.1: icmp_seq=29 ttl=64 time=2.12 ms
64 bytes from 192.168.178.1: icmp_seq=30 ttl=64 time=7.94 ms
64 bytes from 192.168.178.1: icmp_seq=31 ttl=64 time=2.46 ms
64 bytes from 192.168.178.1: icmp_seq=32 ttl=64 time=27.1 ms
64 bytes from 192.168.178.1: icmp_seq=33 ttl=64 time=208 ms
64 bytes from 192.168.178.1: icmp_seq=34 ttl=64 time=284 ms
64 bytes from 192.168.178.1: icmp_seq=35 ttl=64 time=279 ms
64 bytes from 192.168.178.1: icmp_seq=36 ttl=64 time=310 ms
64 bytes from 192.168.178.1: icmp_seq=37 ttl=64 time=203 ms
64 bytes from 192.168.178.1: icmp_seq=38 ttl=64 time=2.11 ms
64 bytes from 192.168.178.1: icmp_seq=39 ttl=64 time=2.11 ms
64 bytes from 192.168.178.1: icmp_seq=40 ttl=64 time=2.95 ms
64 bytes from 192.168.178.1: icmp_seq=41 ttl=64 time=2.01 ms
64 bytes from 192.168.178.1: icmp_seq=42 ttl=64 time=2.52 ms
64 bytes from 192.168.178.1: icmp_seq=43 ttl=64 time=2.04 ms
64 bytes from 192.168.178.1: icmp_seq=44 ttl=64 time=2.06 ms
64 bytes from 192.168.178.1: icmp_seq=45 ttl=64 time=2.10 ms
64 bytes from 192.168.178.1: icmp_seq=46 ttl=64 time=2.09 ms
64 bytes from 192.168.178.1: icmp_seq=47 ttl=64 time=2.11 ms
64 bytes from 192.168.178.1: icmp_seq=48 ttl=64 time=1.55 ms
64 bytes from 192.168.178.1: icmp_seq=49 ttl=64 time=2.06 ms
64 bytes from 192.168.178.1: icmp_seq=50 ttl=64 time=2.00 ms
64 bytes from 192.168.178.1: icmp_seq=51 ttl=64 time=2.35 ms
64 bytes from 192.168.178.1: icmp_seq=52 ttl=64 time=2.07 ms
64 bytes from 192.168.178.1: icmp_seq=53 ttl=64 time=2.20 ms
64 bytes from 192.168.178.1: icmp_seq=54 ttl=64 time=2.08 ms
64 bytes from 192.168.178.1: icmp_seq=55 ttl=64 time=2.22 ms
64 bytes from 192.168.178.1: icmp_seq=56 ttl=64 time=1.55 ms
64 bytes from 192.168.178.1: icmp_seq=57 ttl=64 time=2.10 ms
64 bytes from 192.168.178.1: icmp_seq=58 ttl=64 time=19.0 ms
64 bytes from 192.168.178.1: icmp_seq=59 ttl=64 time=221 ms
64 bytes from 192.168.178.1: icmp_seq=60 ttl=64 time=1091 ms
64 bytes from 192.168.178.1: icmp_seq=61 ttl=64 time=1100 ms
64 bytes from 192.168.178.1: icmp_seq=62 ttl=64 time=1123 ms
64 bytes from 192.168.178.1: icmp_seq=63 ttl=64 time=272 ms
64 bytes from 192.168.178.1: icmp_seq=64 ttl=64 time=2.43 ms
64 bytes from 192.168.178.1: icmp_seq=65 ttl=64 time=2.09 ms
64 bytes from 192.168.178.1: icmp_seq=66 ttl=64 time=18.4 ms
64 bytes from 192.168.178.1: icmp_seq=67 ttl=64 time=2.01 ms
64 bytes from 192.168.178.1: icmp_seq=68 ttl=64 time=2.70 ms
64 bytes from 192.168.178.1: icmp_seq=69 ttl=64 time=4.13 ms
64 bytes from 192.168.178.1: icmp_seq=70 ttl=64 time=2.26 ms
64 bytes from 192.168.178.1: icmp_seq=71 ttl=64 time=2.06 ms
64 bytes from 192.168.178.1: icmp_seq=72 ttl=64 time=2.24 ms
(...)
It is not always that high (1500ms) but can be around 150ms.
This is quite problematic during meetings. I reverted back to
wpa_supplicant and I no longer have these big delays. With
wpa_supplicant, it goes from 2ms to 25/30ms every ~10 seconds for 2
seconds.
I suspect a scan is periodically done and cause these delays. I didn’t
investigate why I have this with iwd only.
Cheers,
Matt
+ ---
+ ProblemType: Bug
+ ApportVersion: 2.20.11-0ubuntu45
+ Architecture: amd64
+ CasperMD5CheckResult: skip
+ CurrentDesktop: ubuntu:GNOME
+ DistroRelease: Ubuntu 20.10
+ InstallationDate: Installed on 2019-03-05 (545 days ago)
+ InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20190226)
+ NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
+ Package: iwd 1.8-1
+ PackageArchitecture: amd64
+ ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
+ Tags: groovy wayland-session
+ Uname: Linux 5.4.0-42-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: adm cdrom dip docker libvirt lpadmin plugdev sambashare sudo
+ _MarkForUpload: True
+ modified.conffile..etc.default.apport: [modified]
+ mtime.conffile..etc.default.apport: 2019-03-07T15:35:26.455785
--
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1893680
Title:
high delay visible every 25/30 seconds
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/iwd/+bug/1893680/+subscriptions
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