[systemd-devel] Trying systemd with Debian Sid/unstable on ASRock E350M1 with Crucial m4 SSD

[Paul Menzel]

Dear systemd folks,


hopefully it is alright to report my findings here. If you have any
suggestions to improve the startup time, please do not hesitate to tell
me. ;-)

Hardware
========
• ASRock E350M1 with dual core 1.6 GHz Fusion CPU [1]
• Crucial m4 SSD connected via SATA-3-cable [2]
• one Ext4 partition

Software
========
• default Debian Sid/unstable installed using `grml-debootstrap` and
Grml live system
• `aptitude purge mdadm lvm2`
• `aptitude install systemd` (version 44-1)
• `linux-image-3.2.0-2-amd64` (version 3.2.17-1)

Results
=======
1. Passing `init=/bin/systemd` to the Linux kernel command line the GDM
3 login screen showed up noticeably faster.

2. GDM 3 did not list the available users though, which had to be
entered manually. After logging out again users are displayed fine.

3. Systemd says start up took 7.5 seconds.

        $ systemd-analyze
        Startup finished in 4077ms (kernel) + 3390ms (userspace) =
        7468ms

4. All units take less than a second to start.

        $ systemd-analyze blame
           948ms avahi-daemon.service
           729ms postfix.service
           656ms rsyslog.service
           632ms systemd-logind.service
           559ms console-kit-log-system-start.service
           523ms bootlogs.service
           520ms chrony.service
           467ms udev.service
           451ms rc.local.service
           436ms loadcpufreq.service
           427ms keymap.service
           424ms ssh.service
           396ms cron.service
           388ms dev-mqueue.mount
           367ms systemd-modules-load.service
           360ms sys-kernel-debug.mount
           340ms udev-trigger.service
           327ms systemd-sysctl.service
           324ms dev-hugepages.mount
           296ms sys-kernel-security.mount
           281ms network-manager.service
           279ms saned.service
           279ms systemd-user-sessions.service
           277ms gdm3.service
           264ms media.mount
           247ms systemd-remount-api-vfs.service
           215ms pppd-dns.service
           211ms resolvconf.service
           199ms systemd-tmpfiles-setup.service
           195ms screen-cleanup.service
           191ms kbd.service
           159ms networking.service
           151ms console-setup.service
           147ms pulseaudio.service
           143ms cpufrequtils.service
            91ms hdparm.service
            91ms mountoverflowtmp.service
            88ms keyboard-setup.service
            87ms sysfsutils.service
            87ms debian-fixup.service
            59ms remount-rootfs.service
            59ms colord-sane.service
            56ms console-kit-daemon.service
            48ms colord.service
            44ms polkitd.service
            31ms accounts-daemon.service
            26ms upower.service
            22ms udisks.service
            19ms boot-efi.mount
            13ms rtkit-daemon.service

5. Also I experience the sudo issue [3].

Conclusions
===========
1. I should follow the optimization suggestions in the systemd Wiki [4].

2. Improving loading time of the Linux kernel should be my priority
right now. With four seconds it take more than half of the total Debian
startup time. I would not have expected that.

I guess I need to use `bootchart` to check if the long time is due to
the slow 1.6 GHz dual Fusion CPU or if the storage is not set up
correctly.

3. It will be interesting if GNOME 3.4 will speed up things too as
mentioned in the Wiki [4]. Currently `gnome-shell` 3.2.2.1-4+b1 is
installed.


Thank you very much for this promising piece of software,

Paul


[1] http://www.asrock.com/mb/overview.asp?Model=E350M1
[2] http://www.crucial.com/store/partspecs.aspx?imodule=CT256M4SSD2
[3] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=667470
[4] http://freedesktop.org/wiki/Software/systemd/Optimizations
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