Package: systemd
Version: 241-2
Severity: important
Dear Maintainer,
on this system, an initial ssh connection needs 11 seconds to complete (as root
or any other user). Further connections are fast.
This is not a slow boot problem because it occurs even when the machine has
been booted for days.
It comes from a slow start of the user's session as can be seen in this log:
Mar 20 15:06:27 hostname sshd[172771]: Accepted publickey for root from
193.55.51.153 port 53702 ssh2: RSA
SHA256:wmFQ70BsRjT4uCWua2ddnbfFv7kiMecLHVNtZMw0KMk
Mar 20 15:06:27 hostname sshd[172771]: pam_unix(sshd:session): session opened
for user root by (uid=0)
Mar 20 15:06:27 hostname systemd-logind[743]: New session 3373 of user root.
Mar 20 15:06:27 hostname systemd[1]: Starting User Manager for UID 0...
Mar 20 15:06:27 hostname systemd[172774]: pam_unix(systemd-user:session):
session opened for user root by (uid=0)
[11 seconds gap]
Mar 20 15:06:38 hostname systemd[172774]: Listening on GnuPG network
certificate management daemon.
Mar 20 15:06:38 hostname systemd[172774]: Reached target Timers.
Mar 20 15:06:38 hostname systemd[172774]: Listening on GnuPG cryptographic
agent and passphrase cache.
Mar 20 15:06:38 hostname systemd[172774]: Reached target Paths.
Mar 20 15:06:38 hostname systemd[172774]: Listening on GnuPG cryptographic
agent and passphrase cache (access for web browsers).
Mar 20 15:06:38 hostname systemd[172774]: Listening on GnuPG cryptographic
agent and passphrase cache (restricted).
Mar 20 15:06:38 hostname systemd[172774]: Listening on Multimedia System.
Mar 20 15:06:38 hostname systemd[172774]: Listening on GnuPG cryptographic
agent (ssh-agent emulation).
Mar 20 15:06:38 hostname systemd[172774]: Condition check resulted in Sound
System being skipped.
Mar 20 15:06:38 hostname systemd[172774]: Starting D-Bus User Message Bus
Socket.
Mar 20 15:06:38 hostname systemd[172774]: Listening on D-Bus User Message Bus
Socket.
Mar 20 15:06:38 hostname systemd[172774]: Reached target Sockets.
Mar 20 15:06:38 hostname systemd[172774]: Reached target Basic System.
Mar 20 15:06:38 hostname systemd[172774]: Reached target Default.
Mar 20 15:06:38 hostname systemd[172774]: Startup finished in 11.151s.
Mar 20 15:06:38 hostname systemd[1]: Started User Manager for UID 0.
Mar 20 15:06:38 hostname systemd[1]: Started Session 3373 of user root.
The problem can also be seen here:
# systemd-analyze --user
Startup finished in 11.151s (userspace)
default.target reached after 11.151s in userspace
# systemd-analyze --user blame
7ms dbus.socket
# systemd-analyze --user critical-chain
The time after the unit is active or started is printed after the "@" character.
The time the unit takes to start is printed after the "+" character.
default.target @11.151s
└─basic.target @11.150s
└─sockets.target @11.150s
└─dbus.socket @11.143s +7ms
└─run-user-0.mount @11.137s
└─-.mount @11.137s
└─-.slice @11.137s
In a further e-mail I will send the output of this command:
# systemd-analyze --user dump
-- Package-specific info:
-- System Information:
Debian Release: buster/sid
APT prefers unstable-debug
APT policy: (500, 'unstable-debug'), (500, 'unstable'), (1,
'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 4.19.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL
set to en_US.UTF-8), LANGUAGE=en_US.
UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_US.UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages systemd depends on:
ii adduser 3.118
ii libacl1 2.2.53-4
ii libapparmor1 2.13.2-9
ii libaudit1 1:2.8.4-2
ii libblkid1 2.33.1-0.1
ii libc6 2.28-8
ii libcap2 1:2.25-2
ii libcryptsetup12 2:2.1.0-2
ii libgcrypt20 1.8.4-5
ii libgnutls30 3.6.6-3
ii libgpg-error0 1.36-1
ii libidn11 1.33-2.2
ii libip4tc0 1.8.2-4
ii libkmod2 26-1
ii liblz4-1 1.8.3-1
ii liblzma5 5.2.4-1
ii libmount1 2.33.1-0.1
ii libpam0g 1.3.1-5
ii libseccomp2 2.3.3-4
ii libselinux1 2.9-1
ii libsystemd0 241-2
ii mount 2.33.1-0.1
ii util-linux 2.33.1-0.1
Versions of packages systemd recommends:
ii dbus 1.13.8-1
ii libpam-systemd 241-2
Versions of packages systemd suggests:
ii policykit-1 0.115-3
ii systemd-container 241-2
Versions of packages systemd is related to:
pn dracut <none>
ii initramfs-tools 0.133
ii udev 241-2
-- no debconf information
--
Laurent.
