Cfrgtkky

I got spinning 5400 rpm 1Gb drive.

Booting takes 69 seconds (is it slow?) and /var/lib/ureadahead contains empty directory debugfs. That is why I wonder if ureadahead does its job.

/var directory is on root partition

~ > df

Filesystem      Size  Used Avail Use% Mounted on

/dev/sda7        24G   15G  8,1G  65% /

udev            3,9G  4,0K  3,9G   1% /dev

/dev/sda9       705G  143G  562G  21% /data

/dev/sda8        29G   24G  4,2G  85% /home

configs seem to be default

~ > cat /etc/init/ureadahead.conf|grep -v '#'|grep -ve '^$'

description "Read required files in advance"

start on starting mountall

stop on stopped rc

expect fork

kill timeout 180

normal exit 0

exec /sbin/ureadahead --daemon

pre-stop exec sleep 45



~ > cat /etc/init/ureadahead-other.conf|grep -v '#'|grep -ve '^$'

description "Read required files in advance (for other mountpoints)"

start on mounted DEVICE=[/UL]* MOUNTPOINT=/?*

expect fork

normal exit 0 4

exec /sbin/ureadahead --daemon $MOUNTPOINT

Strangily /var/log/upstart/ureadahead.log.1.gz contains almost only "Ignored relative path" or "No such file or directory" tagged entries.

root:/var/log# zcat upstart/ureadahead.log.1.gz |grep -v "Ignored relative path"

Counted 4 CPUs



ureadahead:/data/swapfile: Error retrieving chunk extents: Operation not supported

ureadahead:/var/lib/NetworkManager/dhclient-eth0.conf: No such file or directory

ureadahead:/var/lib/NetworkManager/dhclient-wlan0.conf: No such file or directory

ureadahead:/var/lib/NetworkManager/dhclient-eth0.conf: No such file or directory

ureadahead:/var/lib/NetworkManager/dhclient-wlan0.conf: No such file or directory

ureadahead:/etc/X11/xorg.conf: No such file or directory

ureadahead:/var/lib/NetworkManager/dhclient-eth0.conf: No such file or directory

ureadahead:/var/lib/NetworkManager/dhclient-wlan0.conf: No such file or directory

ureadahead:/var/lib/NetworkManager/dhclient-eth0.conf: No such file or directory

ureadahead:/var/lib/NetworkManager/dhclient-wlan0.conf: No such file or directory

ureadahead:/usr/share/X11/xorg.conf.d/20-intel.conf: No such file or directory

Counted 4 CPUs



ureadahead:/data/swapfile: Error retrieving chunk extents: Operation not supported

On bootchart ureadahead appears on 16th second and lasts less than a second. Compare to https://superuser.com/questions/286571/ubuntu-slow-startup-time-modprobe where ureadahead starts immediately after plymouthd

UPDATE 1 Add blockdev report

# blockdev --report

RO    RA   SSZ   BSZ   StartSec            Size   Device

rw   256   512  4096          0   1000204886016   /dev/sda

rw   256   512  4096       2048       524288000   /dev/sda1

rw   256   512  4096    1026048        41943040   /dev/sda2

rw   256   512  4096    1107968       134217728   /dev/sda3

rw   256   512  4096    1370112       524288000   /dev/sda4

rw   256   512  4096    2394112    171795546112   /dev/sda5

rw   256   512  4096 1927233536     13460267008   /dev/sda6

rw   256   512  4096  337932288     26214400000   /dev/sda7

rw   256   512  4096  389132288     31457280000   /dev/sda8

rw   256   512  4096  450572288    756050558976   /dev/sda9

rw   256   512   512          0      1073741312   /dev/sr0

Partitions /dev/sda1 - /dev/sda/6 are windoze, ESP, DIAGS, WINRETOOLS, PBR Image

This version of ureadahead has been around since at least the start of 2015 and I doubt it was written with systemd in mind. I don't know what bumped the minor versions but last commits are from 2010. They probably included some of the merge requests since your version is reporting cpu count.

The dev is now working for Google.

Your best bet at this point would be to keep it disabled. If looking to shave off a couple seconds off boot, remove wpa_supplicant if not needed.