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#1 2009-01-07 16:29:36

Duologic
Member
From: Belgium
Registered: 2007-11-11
Posts: 249

2 days of tweaking for a faster boot time

2 days of tweaking for a faster boot time
Why: just because I can, for other people to see what is possible with (Arch)linux.
Grub to agetty in 13s (coming from 24s)

Before: (after fresh install)
>Bootchart taken offline! 24s boot
After: (2 days of tweaking)
>Bootchart taken offline! 13s boot

Commenting stuff in /etc/inittab
    wait -> once
    lesser agetty's
    no login manager

# /etc/inittab

id:3:initdefault:

rc::sysinit:/etc/rc.sysinit
rs:S1:once:/etc/rc.single
rm:2345:once:/etc/rc.multi
rh:06:once:/etc/rc.shutdown
su:S:once:/sbin/sulogin -p

c1:2345:respawn:/sbin/agetty -8 38400 vc/1 linux
c2:2345:respawn:/sbin/agetty -8 38400 vc/2 linux
#c3:2345:respawn:/sbin/agetty -8 38400 vc/3 linux

ca::ctrlaltdel:/sbin/shutdown -t3 -r now

# End of file

Rough cleaning of /etc/rc.sysinit
    Stripping out LVM, RAID, Encrypted
    Defaulting hwclock behavior
Fine tuning /etc/rc.sysinit
    Adding a lot of ampersands to send stuff to the background
    Activate '/sbin/udevadm trigger' earlier
    Commenting Module depencies
    Including default behavior (LOCALE, KEYMAP, HOSTNAME)

#!/bin/bash
# /etc/rc.sysinit

. /etc/rc.conf
. /etc/rc.d/functions

echo " "
printhl "Arch Linux\n"
printhl "${C_H2}http://www.archlinux.org"
printhl "Copyright 2002-2007 Judd Vinet"
printhl "Copyright 2007-2008 Aaron Griffin"
printhl "Distributed under the GNU General Public License (GPL)"
printsep

# mount /proc, /sys and our RAM /dev
/bin/mount -n -t ramfs none /dev
/bin/mount -n -t proc none /proc
/bin/mount -n -t sysfs none /sys

# Create our default nodes that minilogd may need
/bin/mknod /dev/null c 1 3
/bin/mknod /dev/zero c 1 5
/bin/mknod /dev/console c 5 1

# More initial /dev setup that udev doesn't do
/bin/ln -snf /proc/self/fd /dev/fd
/bin/ln -snf /proc/self/fd/0 /dev/stdin
/bin/ln -snf /proc/self/fd/1 /dev/stdout
/bin/ln -snf /proc/self/fd/2 /dev/stderr
/bin/ln -snf /proc/kcore /dev/core
/bin/mkdir /dev/pts
/bin/mkdir /dev/shm

# start up our mini logger until syslog takes over
/sbin/minilogd

# anything more serious than KERN_WARNING goes to the console
# 'verbose' cmdline parameter enables more messages
if /bin/grep -q " verbose" /proc/cmdline; then
    /bin/dmesg -n 8
else
    /bin/dmesg -n 3
fi

# enable rtc access
/sbin/modprobe rtc-cmos >/dev/null 2>&1
RTC_MAJOR=$(/bin/grep -w rtc /proc/devices 2>/dev/null); RTC_MAJOR="${RTC_MAJOR%% *}"
if [ -n "$RTC_MAJOR" ]; then
    /bin/mkdir /dev/misc/
    /bin/mknod /dev/misc/rtc0 c $RTC_MAJOR 0
    /bin/ln -s /dev/misc/rtc0 /dev/rtc
fi

# Set clock early to fix some bugs with filesystem checks
# Clock is set again later to match rc.conf
if [ -f /etc/localtime ]; then
    /sbin/hwclock --hctosys --localtime --directisa --noadjfile
fi

echo > /proc/sys/kernel/hotplug

if [ -x /sbin/udevadm -a -d /sys/block ]; then
    # We have udev and /sys appears to be mounted, use UDev
    stat_busy "Starting UDev Daemon"
    /sbin/udevd --daemon
    /sbin/udevadm trigger &
    udevstart="$(/bin/date +%s%0N)"
    stat_done
else
    # Static /dev, our last resort
    status "Using static /dev filesystem" true
fi

# Load modules from the MODULES array defined in rc.conf
if ! [ "$load_modules" = "off" ]; then
    if [ -f /proc/modules ]; then
        stat_busy "Loading Modules"
        for mod in "${MODULES[@]}"; do
            if [ "$mod" = "${mod#!}" ]; then
                /sbin/modprobe $mod &
            fi
        done
        stat_done
    fi
    if [ -d /proc/acpi ]; then
        stat_busy "Loading standard ACPI modules"
        ACPI_MODULES="ac battery button fan processor thermal"
        k="$(echo $BLACKLIST ${MOD_BLACKLIST[@]} | /bin/sed 's|-|_|g')"
        j="$(echo ${MODULES[@]} | /bin/sed 's|-|_|g')"
        #add disabled MODULES (!) to blacklist - much requested feature
        for m in ${j}; do
                [ "$m" != "${m#!}" ] && k="${k} ${m#!}"
        done
        # add disablemodules= from commandline to blacklist
        k="${k} $(echo ${disablemodules} | /bin/sed 's|-|_|g' | /bin/sed 's|,| |g')"
        for n in ${ACPI_MODULES}; do
            if ! echo ${k} | /bin/grep "\<$n\>" 2>&1 >/dev/null; then
                /sbin/modprobe $n > /dev/null 2>&1 &
            fi
        done
        stat_done
    fi
fi

# run udev uevents
if /bin/pidof -o %PPID /sbin/udevd >/dev/null; then
    stat_busy "Loading UDev uevents"
    /sbin/udevadm settle &
    stat_done
    udevend="$(/bin/date +%s%0N)"
    printhl "   UDev uevent processing time: $((($udevend-$udevstart)/1000000))ms"
fi

# bring up the loopback interface
if [ -d /sys/class/net/lo ]; then
    stat_busy "Bringing up loopback interface"
    /sbin/ifconfig lo 127.0.0.1 up &
    if [ $? -ne 0 ]; then
        stat_fail
    else
        stat_done
    fi
fi

status "Mounting Root Read-only" /bin/mount -n -o remount,ro /

FORCEFSCK=
[ -f /forcefsck ] && FORCEFSCK="-- -f"
NETFS="nonfs,nonfs4,nosmbfs,nocifs,nocodafs,noncpfs,nosysfs,noshfs,nofuse,nofuseblk"

if [ -x /sbin/fsck ]; then
    stat_busy "Checking Filesystems"
    if /bin/grep -qw quiet /proc/cmdline; then
        /sbin/fsck -A -T -C -a -t $NETFS $FORCEFSCK >/dev/null 2>&1
    else
        /sbin/fsck -A -T -C -a -t $NETFS $FORCEFSCK 2>/dev/null
    fi
    fsckret=$?
    if [ ${fsckret} -gt 1 ]; then
        stat_fail
        if [ $((${fsckret}&2)) -eq 2 ]; then
            echo
            echo "********************** REBOOT REQUIRED *********************"
            echo "*                                                          *"
            echo "* The system will be rebooted automatically in 15 seconds. *"
            echo "*                                                          *"
            echo "************************************************************"
            echo
            /bin/sleep 15
        else
            echo
            echo "*****************  FILESYSTEM CHECK FAILED  ****************"
            echo "*                                                          *"
            echo "*  Please repair manually and reboot. Note that the root   *"
            echo "*  file system is currently mounted read-only. To remount  *"
            echo "*  it read-write type: mount -n -o remount,rw /            *"
            echo "*  When you exit the maintenance shell the system will     *"
            echo "*  reboot automatically.                                   *"
            echo "*                                                          *"
            echo "************************************************************"
            echo
            /sbin/sulogin -p
        fi
        echo "Automatic reboot in progress..."
        /bin/umount -a
        /bin/mount -n -o remount,ro /
        /sbin/reboot -f
        exit 0
    fi
    stat_done
fi

stat_busy "Mounting Local Filesystems"
/bin/mount -n -o remount,rw /
/bin/rm -f /etc/mtab*
# make sure / gets written to /etc/mtab
/bin/mount -o remount,rw /
# Write /proc, /sys and /dev to /etc/mtab
if [ -e /proc/mounts ]; then
    /bin/grep -e "/proc " -e "/sys " -e "/dev " /proc/mounts >> /etc/mtab
fi
# now mount all the local filesystems
/bin/mount -a -t $NETFS
stat_done

status "Activating Swap" /sbin/swapon -a &

stat_busy "Configuring System Clock"
if [ ! -f /var/lib/hwclock/adjtime ]; then
    echo "0.0 0 0.0" > /var/lib/hwclock/adjtime &
fi

/bin/rm -f /etc/localtime
/bin/cp "/usr/share/zoneinfo/Europe/Brussels" /etc/localtime &
/sbin/hwclock --hctosys --localtime --directisa &
stat_done

if [ -f /var/run/random-seed ]; then
    stat_busy "Initializing Random Seed"
    /bin/cat /var/run/random-seed >/dev/urandom &
    stat_done
fi

stat_busy "Removing Leftover Files"
/bin/rm -f /etc/nologin &>/dev/null
/bin/rm -f /etc/shutdownpid &>/dev/null
/bin/rm -f /var/lock/* &>/dev/null
/bin/rm -rf /tmp/* /tmp/.* &>/dev/null
/bin/rm -f /forcefsck &>/dev/null
(cd /var/run && /usr/bin/find . ! -type d -exec /bin/rm -f -- {} \; )
: > /var/run/utmp
# Keep {x,k,g}dm happy with xorg
/bin/mkdir /tmp/.ICE-unix && /bin/chmod 1777 /tmp/.ICE-unix
/bin/mkdir /tmp/.X11-unix && /bin/chmod 1777 /tmp/.X11-unix
stat_done

#status "Updating Shared Library Links" /sbin/ldconfig

status "Setting Hostname: Pinguin" /bin/hostname "Pinguin" &

#status "Updating Module Dependencies" /sbin/depmod -A &

# Flush old locale settings
: >/etc/profile.d/locale.sh
/bin/chmod 755 /etc/profile.d/locale.sh
# Set user defined locale
[ -z "$LOCALE" ] && LOCALE="en_US"
stat_busy "Setting Locale: en_US"
echo "export LANG=en_US" >>/etc/profile.d/locale.sh
stat_done

stat_busy "Setting Consoles to UTF-8 mode"
# UTF-8 consoles are default since 2.6.24 kernel
# this code is needed not only for older kernels,
# but also when user has set vt.default_utf8=0 but LOCALE is *.UTF-8.
for i in $(/usr/bin/seq 0 63); do
    usr/bin/kbd_mode -u < /dev/vc/${i}
    printf "\e%%G" > /dev/vc/${i}
done
# the $CONSOLE check helps us avoid this when running scripts from cron
echo 'if [ "$CONSOLE" = "" -a "$TERM" = "linux" -a -t 1 ]; then printf "\e%%G"; fi' >>/etc/profile.d/locale.sh
stat_done

status "Loading Keyboard Map: be-latin1" /bin/loadkeys -q -u "be-latin1" &



# Adding persistent network/cdrom generated rules
if [ -f "/dev/.udev/tmp-rules--70-persistent-cd.rules" ]; then
    stat_busy "Adding persistent cdrom udev rules"
    /bin/cat /dev/.udev/tmp-rules--70-persistent-cd.rules >> /etc/udev/rules.d/70-persistent-cd.rules
    stat_done
fi
if [ -f "/dev/.udev/tmp-rules--70-persistent-net.rules" ]; then
    stat_busy "Adding persistent network udev rules"
    /bin/cat /dev/.udev/tmp-rules--70-persistent-net.rules >> /etc/udev/rules.d/70-persistent-net.rules
    stat_done
fi

# Save our dmesg output from this boot
if [ -f /var/log/dmesg.log ]; then
    /bin/rm /var/log/dmesg.log
fi
/bin/dmesg > /var/log/dmesg.log &

# End of file

Simplefy /etc/rc.conf
    No network stuff needed on boot
    Background most deamons
    Strip unused variables

# /etc/rc.conf
USECOLOR="yes"
MOD_AUTOLOAD="yes"
MODULES=()
DAEMONS=(syslog-ng @hal @fam @crond @alsa)

Replacing /lib/udev/load-modules.sh
    Disables blacklisting, see http://wiki.archlinux.org/index.php/Spe … ng_modules
   

#! /bin/sh
# /lib/udev/load-modules.sh
/sbin/modprobe $1 &

Cleaning up mkinitcpio.conf
    Only sata drivers for my harddrive
   

# /etc/mkinitcpio.conf
MODULES="ahci"
BINARIES=""
FILES=""
HOOKS="base udev autodetect sata usbinput filesystems"

Fixing /etc/rc.shutdown (because time got lost)
    Stripping out LVM, RAID, Encrypted
    Defaulting hwclock behavior

#!/bin/bash
# /etc/rc.shutdown

. /etc/rc.conf
. /etc/rc.d/functions

# avoid staircase effect
/bin/stty onlcr

echo " "
printhl "Initiating Shutdown..."
echo " "

# avoid NIS hanging syslog-ng on shutdown by unsetting the domainname
if [ -x /bin/domainname ]; then
    /bin/domainname ""
fi

if [ -x /etc/rc.local.shutdown ]; then
    /etc/rc.local.shutdown
fi

if [ "$PREVLEVEL" = "3" -o "$PREVLEVEL" = "5" ]; then
    # Shutdown daemons
    let i=${#DAEMONS[@]}
    while [ $i -ge 0 ]; do
        if [ "${DAEMONS[$i]:0:1}" != '!' ]; then
            ck_daemon ${DAEMONS[$i]#@} || stop_daemon ${DAEMONS[$i]#@}
        fi
        let i=i-1
    done
    # find any leftover daemons and shut them down in reverse order
    if [ -d /var/run/daemons ]; then
        for daemon in $(/bin/ls -1t /var/run/daemons); do
            stop_daemon $daemon
        done
    fi
fi

# Terminate all processes
stat_busy "Sending SIGTERM To Processes"
/sbin/killall5 -15 &> /dev/null
/bin/sleep 5
stat_done

stat_busy "Sending SIGKILL To Processes"
/sbin/killall5 -9 &> /dev/null
/bin/sleep 1
stat_done

stat_busy "Saving Random Seed"
/bin/dd if=/dev/urandom of=/var/run/random-seed count=1 bs=512 2> /dev/null
stat_done

stat_busy "Saving System Clock"
/bin/rm -f /etc/localtime
/bin/cp "/usr/share/zoneinfo/Europe/Brussels" /etc/localtime
/sbin/hwclock --systohc --localtime --directisa
stat_done

# removing psmouse module to fix some reboot issues on newer laptops
/sbin/modprobe -r psmouse >/dev/null 2>&1

# Write to wtmp file before unmounting
/sbin/halt -w

stat_busy "Deactivating Swap"
/sbin/swapoff -a
stat_done

stat_busy "Unmounting Filesystems"
/bin/umount -a -r -t noramfs,notmpfs,nosysfs,noproc
stat_done

stat_busy "Remounting Root Filesystem Read-only"
/bin/mount -n -o remount,ro /
stat_done

# Power off or reboot
if [ "$RUNLEVEL" = "0" ]; then
    printsep
    printhl "${C_H2}POWER OFF"
    /sbin/poweroff -d -f -h -i
else
    printsep
    printhl "${C_H2}REBOOTING"
    # if kexec is installed and a kernel is loaded, use it
    [ -x /sbin/kexec ] && /sbin/kexec -e > /dev/null 2>&1
    /sbin/reboot -d -f -i
fi

# End of file

References
    http://wiki.archlinux.org/index.php/The … ot_process
    http://wiki.archlinux.org/index.php/Fas … the_kernel
    http://wiki.archlinux.org/index.php/Udev
    http://wiki.archlinux.org/index.php/Speedup_udev
    http://wiki.archlinux.org/index.php/Daemons
    http://wiki.archlinux.org/index.php/Rc.conf
    http://wiki.archlinux.org/index.php/Con … mkinitcpio
    http://bbs.archlinux.org/search.php a lot of searching :D
    http://kmandla.wordpress.com/howtos/
    And others...

Last edited by Duologic (2009-09-01 15:14:45)

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#2 2009-01-07 16:37:47

userlander
Member
Registered: 2008-08-23
Posts: 413

Re: 2 days of tweaking for a faster boot time

good work. what does changing wait -> once do?

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#3 2009-01-07 16:43:41

Duologic
Member
From: Belgium
Registered: 2007-11-11
Posts: 249

Re: 2 days of tweaking for a faster boot time

I'll try anything too speed up boot for my system, and I found that hack here: http://kmandla.wordpress.com/2007/01/28 … n-inittab/
I didn't pay much attention to inittab.

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#4 2009-01-07 17:09:20

Zariel
Member
Registered: 2008-10-07
Posts: 446

Re: 2 days of tweaking for a faster boot time

How do you login?

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#5 2009-01-07 17:10:13

fwojciec
Member
Registered: 2007-05-20
Posts: 1,411

Re: 2 days of tweaking for a faster boot time

Amount of seconds used to achieve faster boot time: 60*60*24*2 = 172800
Amount of seconds saved each boot: 11

Great!  Now you just need to boot your computer 15709 times to make up the time tongue

EDIT: Nice writeup, by the way -- I'm sure people will find it useful.

Last edited by fwojciec (2009-01-07 17:14:30)

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#6 2009-01-07 17:22:11

Zariel
Member
Registered: 2008-10-07
Posts: 446

Re: 2 days of tweaking for a faster boot time

Nice, should add it to the wiki

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#7 2009-01-07 17:26:32

moljac024
Member
From: Serbia
Registered: 2008-01-29
Posts: 2,676

Re: 2 days of tweaking for a faster boot time

fwojciec wrote:

Amount of seconds used to achieve faster boot time: 60*60*24*2 = 172800
Amount of seconds saved each boot: 11

Great!  Now you just need to boot your computer 15709 times to make up the time tongue

EDIT: Nice writeup, by the way -- I'm sure people will find it useful.

That's 43 years if you turn on your computer once a day.


The day Microsoft makes a product that doesn't suck, is the day they make a vacuum cleaner.
--------------------------------------------------------------------------------------------------------------
But if they tell you that I've lost my mind, maybe it's not gone just a little hard to find...

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#8 2009-01-07 17:27:32

Duologic
Member
From: Belgium
Registered: 2007-11-11
Posts: 249

Re: 2 days of tweaking for a faster boot time

Zariel: With agetty and I got 'xinit &' in ~/.bash_profile to load X directly. Maybe I will add it to the wiki, but that takes more work than just posting it here.

fwojciec: 15702 times divided by the people who use this to speed up there boot time, and actualy I didn't spend the full two days to do this, just thought it sounded nice (check the dates on the bootcharts).

Last edited by Duologic (2009-01-07 17:27:59)

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#9 2009-01-07 20:05:39

dunc
Member
From: Glasgow, UK
Registered: 2007-06-18
Posts: 557

Re: 2 days of tweaking for a faster boot time

moljac024 wrote:
fwojciec wrote:

Amount of seconds used to achieve faster boot time: 60*60*24*2 = 172800
Amount of seconds saved each boot: 11

Great!  Now you just need to boot your computer 15709 times to make up the time tongue

EDIT: Nice writeup, by the way -- I'm sure people will find it useful.

That's 43 years if you turn on your computer once a day.

I've said it before, and I'll say it again: time used when you can spare it to save time when you can't isn't wasted, even if you end up using more overall than you actually save.


0 Ok, 0:1

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#10 2009-01-07 23:58:53

ibendiben
Member
Registered: 2007-10-10
Posts: 519
Website

Re: 2 days of tweaking for a faster boot time

A great post like this and then without a single 'edit'. Nice job!

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#11 2009-01-08 00:00:57

Duologic
Member
From: Belgium
Registered: 2007-11-11
Posts: 249

Re: 2 days of tweaking for a faster boot time

I've got my secrets on doing that wink

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#12 2009-01-08 00:07:34

vh22
Member
Registered: 2009-01-07
Posts: 10

Re: 2 days of tweaking for a faster boot time

Nice post! I was doing something similar yesterday . I found that if I take out all the kernel hooks except base in mkinitcpio.conf and just load all the modules I need manually, I can save time. I went down from about 35 seconds to about 15 seconds on a virtual machine.

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#13 2009-01-08 00:14:08

Duologic
Member
From: Belgium
Registered: 2007-11-11
Posts: 249

Re: 2 days of tweaking for a faster boot time

That sounds great, I'm planning to do the same in the near future to go below 10 seconds.

In theory if I would have done that in first place and count 20 seconds of my first boot, I'm booting in $-) like 4 seconds.
I gues that's to good to be true...

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#14 2009-01-08 00:18:59

vh22
Member
Registered: 2009-01-07
Posts: 10

Re: 2 days of tweaking for a faster boot time

It wasn't that alone that brought the boot down 20 seconds. It was almost everything you did plus that.

And a 4 second boot sounds great. i have a laptop and suspend is iffy, unfortunately.

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#15 2009-01-08 01:40:07

DonVla
Member
From: Bonn, Germany
Registered: 2007-06-07
Posts: 997

Re: 2 days of tweaking for a faster boot time

Duologic wrote:

Cleaning up mkinitcpio.conf
    Only sata drivers for my harddrive
   

# /etc/mkinitcpio.conf
MODULES="ahci"
BINARIES=""
FILES=""
HOOKS="base udev autodetect sata usbinput filesystems"

you could also kick some HOOKS:
add to MODULES array

MODULES="ahci <your fst here - eg: ext3>"

(though i think you also need sd-mod - not sure)
and omit sata (you have already ahci so you do not even need sata) and filesystems.
if you do not have an usb keyborard you can also drop usbinput.
then you HOOKS look like:

HOOKS="base udev"

you could also omit udev, but if you use persistent partition naming (which is very useful), you'll need that.
however, the hooks don't take so much time. you'll save perhaps only one second or so.

Last edited by DonVla (2009-01-08 01:41:52)

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#16 2009-01-08 09:56:10

Super Jamie
Member
From: Brisbane, AU
Registered: 2008-12-15
Posts: 79
Website

Re: 2 days of tweaking for a faster boot time

Very impressive, I dream of a 13 second boot time.

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#17 2009-01-08 11:13:53

Army
Member
Registered: 2007-12-07
Posts: 1,784

Re: 2 days of tweaking for a faster boot time

Nice! I'll definitely take a closer look at this guide, maybe I'll try it out.

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#18 2009-01-08 12:11:40

iBertus
Member
From: Greenville, NC
Registered: 2004-11-04
Posts: 2,228

Re: 2 days of tweaking for a faster boot time

All of this doesn't help me any since my board takes ~45-60 seconds in BIOS before passing on to GRUB. This board (Intel D5400XS) is the slowest booting board that I've ever had.

Still, keep up the good work.

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#19 2009-01-08 12:17:53

Ranguvar
Member
From: Our collective subconscious
Registered: 2008-08-12
Posts: 2,515
Website

Re: 2 days of tweaking for a faster boot time

iBertus wrote:

All of this doesn't help me any since my board takes ~45-60 seconds in BIOS before passing on to GRUB. This board (Intel D5400XS) is the slowest booting board that I've ever had.

Still, keep up the good work.

Ouuch. That sucks.


Very nice info, OP smile Thanks.

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#20 2009-01-08 12:34:29

iBertus
Member
From: Greenville, NC
Registered: 2004-11-04
Posts: 2,228

Re: 2 days of tweaking for a faster boot time

Ranguvar wrote:
iBertus wrote:

All of this doesn't help me any since my board takes ~45-60 seconds in BIOS before passing on to GRUB. This board (Intel D5400XS) is the slowest booting board that I've ever had.

Still, keep up the good work.

Ouuch. That sucks.


Very nice info, OP smile Thanks.

Yeah, I'm happy with the system, but wish the boot performance were better. The worst part is that this machine is an energy whore and so I pretty much have to shutdown when I step away from the computer for any length. I'd feel bad about drawing ~500W from the mains when it can be avoided. hmm

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#21 2009-01-08 13:49:29

Duologic
Member
From: Belgium
Registered: 2007-11-11
Posts: 249

Re: 2 days of tweaking for a faster boot time

DonVla wrote:
Duologic wrote:

Cleaning up mkinitcpio.conf
    Only sata drivers for my harddrive
   

# /etc/mkinitcpio.conf
MODULES="ahci"
BINARIES=""
FILES=""
HOOKS="base udev autodetect sata usbinput filesystems"

you could also kick some HOOKS:
add to MODULES array

MODULES="ahci <your fst here - eg: ext3>"

(though i think you also need sd-mod - not sure)
and omit sata (you have already ahci so you do not even need sata) and filesystems.
if you do not have an usb keyborard you can also drop usbinput.
then you HOOKS look like:

HOOKS="base udev"

you could also omit udev, but if you use persistent partition naming (which is very useful), you'll need that.
however, the hooks don't take so much time. you'll save perhaps only one second or so.

I got as far as this now, can you refer me to some documentation that helps me with non-persistent naming. I would love to try it out, but can't find good documentation.

I did needed the sd-mod, forgot to make a copy of a working kernel image and didn't got further than ramfs$. I got to save my installation with the install USB. ( I'll be writing another topic on that later, think it would be interesting for people that forget to make backups :-D )

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#22 2009-01-08 14:00:27

Duologic
Member
From: Belgium
Registered: 2007-11-11
Posts: 249

Re: 2 days of tweaking for a faster boot time

Nevermind, already got it, i have only the base hook now, but boot slowed down by 1 sec now :-s

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#23 2009-01-08 15:17:14

amranu
Member
Registered: 2008-09-25
Posts: 94

Re: 2 days of tweaking for a faster boot time

I need to do some of this to get my 12 second bootchart lower

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#24 2009-01-08 20:12:58

jey
Member
Registered: 2009-01-01
Posts: 20

Re: 2 days of tweaking for a faster boot time

My cold boot to getty is ~30s, that isn't too bad I guess. I added some & to rc.sysinit and moved udev trigger up the rc.sysinit some.

I havn't tried the /lib/udev/load-modules.sh trick yet, nor the inittab 'once'.

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#25 2009-01-08 20:21:18

haxit
Member
From: /home/haxit
Registered: 2008-03-04
Posts: 1,247
Website

Re: 2 days of tweaking for a faster boot time

Great write up. Would you mind if I put this in the wiki? Under your name of course.


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