pierluigi ha scritto:il kernel che ho postato l'ho testato su una macchina virtuale.
sono graditi riscontri da chi lo prova!

Berseker ha scritto:pierluigi ha scritto:il kernel che ho postato l'ho testato su una macchina virtuale.
sono graditi riscontri da chi lo prova!
l'ho appena installato, ma sinceramente non mi sembra di aver avuto particolari incrementi di velocità.. ok che il readahead non è stato attivato, ma senza non c'è un qualche minimo miglioramento? questo è il bootchartd appena rilevato..
[url]http://img178.imageshack.us/img178/4361/bootchartha4.th.png[/url]
purtroppo non ne ho uno che rappresenti la situazione precedente, ma ricordo che tempo addietro in base al kernel facevo dai 42 ai 44 secondi.. la cosa che mi lascia perplesso in effetti sono i 7 secondi di assoluto riposo del pc all'inizio...
el_cammello ha scritto:Il comando generate_filelist è diventato sreadahead-pack?
Edit: da come sta lavorando sembra proprio di si
Edit2: Ho riavviato con sreadahead attivato e readahead.packet generato in /etc, e un leggero incremento di velocità l'ho notato
el_cammello ha scritto:Il comando generate_filelist è diventato sreadahead-pack?
Edit: da come sta lavorando sembra proprio di si
Edit2: Ho riavviato con sreadahead attivato e readahead.packet generato in /etc, e un leggero incremento di velocità l'ho notato


pierluigi ha scritto:qualcosa non va, se guardi nei bootchart, sreadahead non parte nemmeno.
prova a lanciarlo da sistema avviato per vedere se ti da qualche errore
[marinz@stazione2 ~]$ /sbin/sreadahead
[marinz@stazione2 ~]$adriano ha scritto:secondo me il file generato non va bene, controlla che non sia vuoto.
[marinz@stazione2 ~]$ ls -l /etc/readahead.packed
-rw-r--r-- 1 root root 17856727 7 dic 13:16 /etc/readahead.packed
[marinz@stazione2 ~]$S4R0 ha scritto:Finalmente ho completato il tutto.
Ricompilato il kernel cercando di togliere tutto ciò che era superfluo (mi è stato molto d'aiuto la localizazione in ita), mi sono subito accorto del cambiamento.
Dopo varie ottimizzazioni sono arrivato a circa 21-22 secondi (misurando con un cronometro), contro i 35 circa precedenti.
Adesso ricompilo il tutto con la patch 2.27.8-1 e vediamo come va a finire
Direi comunque che abbiamo ottenuto un buon risultato.


#!/bin/bash
#
# /etc/rc.sysinit
#
. /etc/rc.conf
. /etc/rc.d/functions
echo " "
printhl "Arch Linuxn"
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 $RTC_MAJOR 0
/bin/ln -s /dev/misc/rtc0 /dev/rtc
fi
HWCLOCK_PARAMS="--hctosys"
if [ "$HARDWARECLOCK" = "UTC" ]; then
HWCLOCK_PARAMS="$HWCLOCK_PARAMS --utc"
else
HWCLOCK_PARAMS="$HWCLOCK_PARAMS --localtime"
fi
if [ "$USEDIRECTISA" = "yes" -o "$USEDIRECTISA" = "YES" ]; then
HWCLOCK_PARAMS="$HWCLOCK_PARAMS --directisa"
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 $HWCLOCK_PARAMS --noadjfile
fi
echo > /proc/sys/kernel/hotplug
if [ -x /sbin/udevadm -a -d /sys/block ]; then
# We have udev and /sys appears to be mounted, use UDev
stat_busy "Starting UDev Daemon"
/sbin/udevd --daemon
stat_done
else
# Static /dev, our last resort
status "Using static /dev filesystem" true
fi
# Load modules from the MODULES array defined in rc.conf
if ! [ "$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 $n > /dev/null 2>&1
fi
done
stat_done
fi
fi
# run udev uevents
if /bin/pidof -o %PPID /sbin/udevd >/dev/null; then
stat_busy "Loading UDev uevents"
udevstart="$(/bin/date +%s%0N)"
/sbin/udevadm trigger
/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 [ $? -ne 0 ]; then
stat_fail
else
stat_done
fi
fi
# If necessary, find md devices and manually assemble RAID arrays
if [ -f /etc/mdadm.conf -a "$(/bin/grep ^ARRAY /etc/mdadm.conf 2>/dev/null)" ]; then
# udev won't create these md nodes, so we do it ourselves
for dev in $(/bin/grep ^ARRAY /etc/mdadm.conf | /bin/awk '{print $2}'); do
path=$(echo $dev | /bin/sed 's|/[^/]*$||')
node=$(echo $dev | /bin/sed "s|^$path/||")
minor=$(echo $node | /bin/sed 's|^[^0-9]*||')
[ ! -e $path/$node ] && /bin/mknod $path/$node b 9 $minor
done
status "Activating RAID arrays" /sbin/mdadm --assemble --scan
fi
if [ "$USELVM" = "yes" -o "$USELVM" = "YES" ]; then
if [ -x /sbin/lvm -a -d /sys/block ]; then
# Kernel 2.6.x, LVM2 groups
/sbin/modprobe -q dm-mod 2>/dev/null
stat_busy "Activating LVM2 groups"
/sbin/lvm vgscan --ignorelockingfailure --mknodes >/dev/null
/sbin/lvm vgchange --ignorelockingfailure -a y >/dev/null
if [ $? -ne 0 ]; then
stat_fail
else
stat_done
fi
fi
fi
# Set up non-root encrypted partition mappings
if [ -f /etc/crypttab -a -n "$(/bin/grep -v ^# /etc/crypttab | /bin/grep -v ^$)" ]; then
/sbin/modprobe -q dm-mod 2>/dev/null
stat_busy "Unlocking encrypted volumes:"
csfailed=0
CS=/sbin/cryptsetup.static
do_crypt() {
if [ $# -ge 3 ]; then
cname="$1"
csrc="$2"
cpass="$3"
shift 3
copts="$*"
stat_append "${cname}.."
# For some fun reason, the parameter ordering varies for
# LUKS and non-LUKS devices. Joy.
if [ "${cpass}" = "SWAP" ]; then
# This is DANGEROUS! The only possible safety check
# is to not proceed in case we find a LUKS device
# This may cause dataloss if it is not used carefully
if $CS isLuks $csrc 2>/dev/null; then
false
else
$CS -d /dev/urandom $copts create $cname $csrc >/dev/null
if [ $? -eq 0 ]; then
stat_append "creating swapspace.."
/sbin/mkswap -L $cname /dev/mapper/$cname >/dev/null
fi
fi
elif [ "${cpass}" = "ASK" ]; then
printf "nOpening '${cname}' volume:n"
if $CS isLuks $csrc 2>/dev/null; then
$CS $copts luksOpen $csrc $cname < /dev/console
else
$CS $copts create $cname $csrc < /dev/console
fi
elif [ "${cpass:0:1}" != "/" ]; then
if $CS isLuks $csrc 2>/dev/null; then
echo "$cpass" | $CS $copts luksOpen $csrc $cname >/dev/null
else
echo "$cpass" | $CS $copts create $cname $csrc >/dev/null
fi
else
if $CS isLuks $csrc 2>/dev/null; then
$CS -d $cpass $copts luksOpen $csrc $cname >/dev/null
else
$CS -d $cpass $copts create $cname $csrc >/dev/null
fi
fi
if [ $? -ne 0 ]; then
csfailed=1
stat_append "failed "
else
stat_append "ok "
fi
fi
}
while read line; do
eval do_crypt "$line"
done </etc/crypttab
if [ $csfailed -eq 0 ]; then
stat_done
else
stat_fail
fi
# Maybe someone has LVM on an encrypted block device
if [ "$USELVM" = "yes" -o "$USELVM" = "YES" ]; then
if [ -x /sbin/lvm -a -d /sys/block ]; then
/sbin/lvm vgscan --ignorelockingfailure --mknodes >/dev/null
/sbin/lvm vgchange --ignorelockingfailure -a y >/dev/null
fi
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
###################################
# Start GDM very early if in runlevel 5
FASTGDM=`/bin/sed "s/.*fastgdm.*/fastgdm/" /proc/cmdline`
if [ "$FASTGDM" = "fastgdm" ]; then
stat_busy "Preloading Graphical User Interface"
/usr/sbin/gdm-binary &
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 $NETFS
stat_done
status "Activating Swap" /sbin/swapon -a
stat_busy "Configuring System Clock"
if [ ! -f /var/lib/hwclock/adjtime ]; then
echo "0.0 0 0.0" > /var/lib/hwclock/adjtime
fi
if [ "$TIMEZONE" != "" -a -e "/usr/share/zoneinfo/$TIMEZONE" ]; then
/bin/rm -f /etc/localtime
/bin/cp "/usr/share/zoneinfo/$TIMEZONE" /etc/localtime
fi
/sbin/hwclock $HWCLOCK_PARAMS
stat_done
if [ -f /var/run/random-seed ]; then
stat_busy "Initializing Random Seed"
/bin/cat /var/run/random-seed >/dev/urandom
stat_done
fi
stat_busy "Removing Leftover Files"
/bin/rm -f /etc/nologin &>/dev/null
/bin/rm -f /etc/shutdownpid &>/dev/null
/bin/rm -f /var/lock/* &>/dev/null
/bin/rm -rf /tmp/* /tmp/.* &>/dev/null
/bin/rm -f /forcefsck &>/dev/null
(cd /var/run && /usr/bin/find . ! -type d -exec /bin/rm -f -- {} ; )
: > /var/run/utmp
# Keep {x,k,g}dm happy with xorg
/bin/mkdir /tmp/.ICE-unix && /bin/chmod 1777 /tmp/.ICE-unix
/bin/mkdir /tmp/.X11-unix && /bin/chmod 1777 /tmp/.X11-unix
stat_done
#status "Updating Shared Library Links" /sbin/ldconfig
if [ "$HOSTNAME" != "" ]; then
status "Setting Hostname: $HOSTNAME" /bin/hostname $HOSTNAME
fi
# Set the NIS domain name, if necessary
[ -f /etc/conf.d/nisdomainname ] && . /etc/conf.d/nisdomainname
if [ "$NISDOMAINNAME" != "" ]; then
status "Setting NIS Domain Name: $NISDOMAINNAME" /bin/nisdomainname $NISDOMAINNAME
fi
status "Updating Module Dependencies" /sbin/depmod -A
# Flush old locale settings
: >/etc/profile.d/locale.sh
/bin/chmod 755 /etc/profile.d/locale.sh
# Set user defined locale
[ -z "$LOCALE" ] && LOCALE="en_US"
stat_busy "Setting Locale: $LOCALE"
echo "export LANG=$LOCALE" >>/etc/profile.d/locale.sh
stat_done
if echo "$LOCALE" | /bin/grep -qi utf ; then
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 "$TERM" = "linux" -a -t 1 ]; then printf "e%%G"; fi' >>/etc/profile.d/locale.sh
stat_done
[ -n "$KEYMAP" ] && status "Loading Keyboard Map: $KEYMAP" /bin/loadkeys -q -u $KEYMAP
else
stat_busy "Setting Consoles to legacy mode"
# make non-UTF-8 consoles work on 2.6.24 and newer kernels
for i in $(/usr/bin/seq 0 63); do
/usr/bin/kbd_mode -a < /dev/vc/${i}
printf "e%%@" > /dev/vc/${i}
done
# the $CONSOLE check helps us avoid this when running scripts from cron
echo 'if [ "$CONSOLE" = "" -a "$TERM" = "linux" -a -t 1 ]; then printf "e%%@"; fi' >>/etc/profile.d/locale.sh
stat_done
[ -n "$KEYMAP" ] && status "Loading Keyboard Map: $KEYMAP" /bin/loadkeys -q $KEYMAP
fi
if [ -n "$CONSOLEFONT" ]; then
stat_busy "Loading Console Font: $CONSOLEFONT"
#CONSOLEMAP in UTF-8 shouldn't be used
if [ -n "$CONSOLEMAP" ] && echo "$LOCALE" | /bin/grep -qi utf ; then
CONSOLEMAP=""
fi
for i in $(/usr/bin/seq 0 63); do
if [ -n "$CONSOLEMAP" ]; then
/usr/bin/setfont -m $CONSOLEMAP $CONSOLEFONT -C /dev/vc/${i} >/dev/null 2>&1
else
/usr/bin/setfont $CONSOLEFONT -C /dev/vc/${i} >/dev/null 2>&1
fi
done
if [ $? -ne 0 ]; then
stat_fail
else
for i in $(/usr/bin/seq 0 63); do
printf "e(K" > /dev/vc/${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(K"; fi' >>/etc/profile.d/locale.sh
stat_done
fi
fi
# 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
# vim: set ts=2 noet:
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