Trying to improve boot time.

[caspar88]

Hi

I'm trying to improve my boot time of 1 minute 20 seconds.

sudo systemd-analyze blame gives:

Code:

        20.175s dev-sdb1.device
        14.827s NetworkManager-wait-online.service
         8.969s libvirt-bin.service
         8.536s grub-common.service
         8.295s accounts-daemon.service
         6.936s virtualbox-guest-utils.service
         6.407s irqbalance.service
         5.398s networking.service
         5.279s systemd-logind.service
         5.210s ondemand.service
         5.185s lm-sensors.service
         5.184s pppd-dns.service
         5.182s gpu-manager.service
         4.893s iio-sensor-proxy.service
         4.877s avahi-daemon.service
         4.790s alsa-restore.service
         4.598s systemd-user-sessions.service
         4.595s rsyslog.service
         4.456s systemd-udevd.service
         4.380s apparmor.service
         3.521s NetworkManager.service
         3.520s ModemManager.service

How can I reduce the first two entries in the list?

Thanks for any suggestions.