how do i remove/stop useless processes

brazzmonkey · 2006-06-22 12:48:49

running ksysguard i realized i have more a hundred process running on my arch linux. some are definitely needed, some i'm not sure they are, some others are definitely useless.

for instance, i notice i have jfs-related processes whereas i don't use this filesystem at all. can i get rid of these ? how ? are they running because the kernel is compiled with jfs support (i use kernel26beyond atm) ?

thanks for sharing your knowledge !

patroclo7 · 2006-06-22 13:21:22

This is definitely awkward. Are the jfs modules loaded? What does lsmod say? Did you install the jfs utilities? What is the exact name of the processes? Anyway, use command line tools to disgnose unuseful processes: start with pstree to see what depends from what.

Cerebral · 2006-06-22 13:31:41

If you've got unneeded filesystem modules, you need to tweak your initrd. Initrd will help.

brazzmonkey · 2006-06-22 18:01:28

@patroclo7 :

$ lsmod
Module                  Size  Used by
ipv6                  207424  10
shpchp                 35936  0
pci_hotplug            22340  1 shpchp
snd_seq_oss            26084  0
snd_seq_midi_event      6400  1 snd_seq_oss
snd_seq                42060  4 snd_seq_oss,snd_seq_midi_event
joydev                  8000  0
snd_pcm_oss            31904  0
snd_mixer_oss          14080  2 snd_pcm_oss
evdev                   7552  0
via_agp                 8192  1
i2c_viapro              7572  0
8139cp                 17024  0
uhci_hcd               25488  0
bt878                   9020  0
usbcore                97696  2 uhci_hcd
tuner                  44076  0
tvaudio                20892  0
via686a                14088  0
i2c_isa                 4224  1 via686a
8139too                21760  0
mii                     4992  2 8139cp,8139too
bttv                  152124  2 bt878
video_buf              16388  1 bttv
compat_ioctl32          1920  1 bttv
i2c_algo_bit            8072  1 bttv
v4l2_common             7168  2 tuner,bttv
btcx_risc               4488  1 bttv
ir_common               8580  1 bttv
snd_emu10k1            94756  2
snd_rawmidi            17824  1 snd_emu10k1
snd_ac97_codec         79904  1 snd_emu10k1
snd_ac97_bus            2688  1 snd_ac97_codec
tveeprom               12944  1 bttv
videodev                7552  2 bttv
snd_bt87x              11592  1
snd_pcm                64900  4 snd_pcm_oss,snd_emu10k1,snd_ac97_codec,snd_bt87x
snd_seq_device          6540  4 snd_seq_oss,snd_seq,snd_emu10k1,snd_rawmidi
snd_timer              17284  3 snd_seq,snd_emu10k1,snd_pcm
snd_page_alloc          7688  3 snd_emu10k1,snd_bt87x,snd_pcm
snd_util_mem            3968  1 snd_emu10k1
snd_hwdep               6916  1 snd_emu10k1
snd                    39776  16 snd_seq_oss,snd_seq,snd_pcm_oss,snd_mixer_oss,snd_emu10k1,snd_rawmidi,snd_ac97_codec,snd_bt87x,snd_pcm,snd_seq_device,snd_timer,snd_hwdep
soundcore               7520  2 snd
emu10k1_gp              3456  0
nvidia               4530388  12
agpgart                23884  2 via_agp,nvidia
i2c_core               16256  9 i2c_viapro,tuner,tvaudio,via686a,i2c_isa,bttv,i2c_algo_bit,tveeprom,nvidia
ppdev                   7172  0
ppp_generic            23060  0
slhc                    6144  1 ppp_generic
analog                  9376  0
gameport               11144  3 emu10k1_gp,analog
irtty_sir               5504  0
sir_dev                13644  1 irtty_sir
irda                  105272  1 sir_dev
crc_ccitt               2688  1 irda
rtc                    10164  0
pcspkr                  3332  0
ide_cd                 32032  0
cdrom                  30128  1 ide_cd
rlocate                11044  0
parport_pc             22508  1
lp                      8960  0
parport                28616  3 ppdev,parport_pc,lp
xfs                   430748  5
reiserfs              207472  0
jfs                   150524  0
ext3                  105096  0
jbd                    47636  1 ext3
reiser4               330456  0
ide_floppy             13952  0
ide_disk               14596  9
via82cxxx               7940  0 [permanent]
trm290                  4228  0 [permanent]
triflex                 3712  0 [permanent]
slc90e66                4992  0 [permanent]
sis5513                11404  0 [permanent]
siimage                 9856  0 [permanent]
serverworks             7560  0 [permanent]
sc1200                  6144  0 [permanent]
rz1000                  3072  0 [permanent]
piix                    8708  0 [permanent]
pdc202xx_old            8832  0 [permanent]
pdc202xx_new            7424  0 [permanent]
ns87415                 4140  0 [permanent]
it821x                  7172  0 [permanent]
hpt366                 15488  0 [permanent]
hpt34x                  4608  0 [permanent]
generic                 4740  0 [permanent]
cy82c693                4228  0 [permanent]
cs5535                  4096  0 [permanent]
cs5530                  4736  0 [permanent]
cmd64x                  9244  0 [permanent]
atiixp                  5264  0 [permanent]
amd74xx                12828  0 [permanent]
alim15x3                9872  0 [permanent]
aec62xx                 6400  0 [permanent]
ide_core              101196  28 ide_cd,ide_floppy,ide_disk,via82cxxx,trm290,triflex,slc90e66,sis5513,siimage,serverworks,sc1200,rz1000,piix,pdc202xx_old,pdc202xx_new,ns87415,it821x,hpt366,hpt34x,generic,cy82c693,cs5535,cs5530,cmd64x,atiixp,amd74xx,alim15x3,aec62xx

damn ! i don't need all this stuff !! i think jfsutils have been installed as a dependency of qtparted.

@Cerebral :
i use beyond kernel, so i have an initramfs thing, not initrd. so here it is :

# Initial Ramdisk setup
# Attention:
# You need only the stuff to be able to mount your root device!
# USB/FW are only needed if you boot from such devices!

# REMOVE_IDE:         removes the complete IDE subsystem
# REMOVE_SCSI:         removes the complete SCSI subsystem
# REMOVE_SATA:         removes the complete SATA subsystem
# REMOVE_CDROM:     removes cdrom support
# REMOVE_USB:         removes the complete USB subsystem
# REMOVE_FW:         removes the complete Firewire subsystem
# REMOVE_RAID:         removes the complete Software RAID subsystem
# REMOVE_DM:        removes the complete device-mapper/LVM subsystem
# REMOVE_FS:         removes the complete Filesystems
#            (you have to include the filesystem in kernel then!)
# AUTODETECT:        enables Arch Linux autodetection 
# HOSTCONTROLLER_*:     specify the modules you need to setup the subsystem "moduleX moduleY",
#                       empty means all modules are included
# FILESYSTEMS:        specify your filesystem modules here, eg. "ext3 reiserfs"
#            empty means all modules are included
# USB_TIMEOUT:        value means  seconds to wait for bringing up usb disks
# CRYPT_DEVICE:     the path to your encrypted root device, if you use one
# RAID_DEVICES:         a space-delimited list of the devices belonging in
#                       your /dev/md0 (root) RAID array
#                           (eg, "/dev/hda3 /dev/hdc3")
#
# ADD_MODULE:         adds modules e.g. "moduleX moduleY"
# REMOVE_MODULE:     removes modules e.g. "moduleX moduleY"
#
# To rebuild initramfs for archck kernel just rerun 'mkinitramfs auto'



# Disable whole subsystems by setting to "1"
REMOVE_IDE=
REMOVE_SCSI=1
REMOVE_SATA=1
REMOVE_CDROM=1
REMOVE_USB=1
REMOVE_FW=1
REMOVE_RAID=1
REMOVE_DM=1
REMOVE_FS=

# Enable auto-detection of HOSTCONTROLlER and FILESYSTEMS (set to "1")
#   (NOTE: This is still experimental, so it is disabled by default)
AUTODETECT=0

# To use fbsplash/gensplash, you need to install gensplashutils and initscripts-gensplash from community.
# Add a theme to enable fbsplash, Try 'darch', it's included in the gensplashutils.
FBSPLASH_THEME=

# Resolution to use, 1024x768 will be used if left blank. Format is '1024x768'
FBSPLASH_RES=1600x1200

# Custom DSDT support can be included if you include the FULL path to the DSDT file here
# If left empty, it will not be included. If unsure, leave empty.
DSDT=

# Define which modules are needed by adding "moduleX moduleY"
# If left empty, all modules are included if they are not disabled above
HOSTCONTROLLER_IDE=
HOSTCONTROLLER_SCSI=
HOSTCONTROLLER_SATA=
HOSTCONTROLLER_USB=
FILESYSTEMS=

# Number of seconds to wait for USB devices to settle
USB_TIMEOUT=5

# If you have an encrypted root filesystem, set it here (eg, /dev/hda4)
CRYPT_DEVICE=

# If you use software RAID for your root device then list all the devices
# that belong to your root array here.  If your root RAID device is
# something other than md0, then change the RAID_ROOT_ARRAY setting.
#    eg, RAID_ROOT_DEVICES="/dev/hda3 /dev/hdc3"
RAID_ROOT_ARRAY="md0"
RAID_ROOT_DEVICES=

# If you use LVM on your root device, then specify it here
#    eg, LVM_ROOT="/dev/vg_root/lv_root"
LVM_ROOT=

# Define additional modules here
ADD_MODULE=
REMOVE_MODULE=

so i suppose i have to fine tune REMOVE_MODULE ...

Cerebral · 2006-06-22 18:10:14

brazzmonkey wrote:

@Cerebral :
i use beyond kernel, so i have an initramfs thing, not initrd. so here it is :
-snip-
so i suppose i have to fine tune REMOVE_MODULE ...

Yes, I should have known that - though technically you can use an initrd with beyond too, afaik.

Anywho, try enabling auto-detection first - I use it, and it works fine for me.

patroclo7 · 2006-06-22 18:41:42

You have basically two options: use autodetection (advised, otherwise you need a finer configuration, not only for filesystems); define the filesystem field with the filesystem of your root partition.

Be ready to pass to mkinitcpio.

brazzmonkey · 2006-06-22 20:36:27

still the same with autodetection enabled...
fine tuning needed

patroclo7 · 2006-06-22 21:30:32

In most cases, you simply need to decalre explicitly the modules you need for your root filesystem and for your hard disk. You did not say us which filesystem you actually use, so it is not easy to give a meaningful advice

patroclo7 · 2006-06-22 21:37:17

Perhaps a fair advice is the following: when the transition from testing to current will be complete, all arch kernels (I guess) will use mkinitcpio nad autodetection will perhaps do a better job. Thus you could wisely wait a couple of days.

T-Dawg · 2006-06-22 22:02:51

for killing all related processes, try killall <procname>

paul_au · 2006-06-22 22:46:35

post your output of:

mkinitramfs kernel=2.6.16-beyond --show

and that'll show whats being detected

Note also that autodetection doesn't work for file systems, so where it says:
FILESYSTEMS=
in your mkinitramfs.conf, put your relevant file system u need there.
eg if your using reiserfs put "reiserfs"
or if your using ext3 put "ext3 jbd"

McQueen · 2006-06-23 02:23:11

paul_au wrote:

or if your using ext3 put "ext3 jbd"

$ sudo mkinitramfs kernel=2.6.16-beyond --show
/etc/mkinitramfs.conf: line 66: jbd: command not found

brazzmonkey · 2006-06-23 07:32:47

oh cool, something must have gone wrong with the autodetect thing, now i get a kernel panic when booting...
and now i realize arch cd is useless when trying to use it to repair stuff... i suppose i should have made a backup, but now it's too late.

bye

patroclo7 · 2006-06-23 16:25:00

Wh useless? You can mount filesystems, modify anything in them, chroot in the environment. May be it is not the richest recovery tool around (this is not its main purpose), but it is far from unuseful.

Gullible Jones · 2006-06-23 20:41:39

*cough* modprobe *cough*

brazzmonkey · 2006-06-26 07:40:17

no, it's not sufficient. i haven't been able to mount my xfs partitions even with xfs modules loaded. i don't know why...

i *really* am tired of linux now...

iphitus · 2006-06-26 09:11:51

if you cant mount them from a liveCD when the xfs module is loaded, something is wrong.

what error did you get?
after trying to mount it, post the output of 'dmesg' to pastebin.com and link it here.

brazzmonkey · 2006-06-27 07:46:54

sorry, i can't tell you because i don't use arch anymore...

ScriptDevil · 2006-06-27 17:09:33

ArchLinux isnt for the impatient. One can do with XP for that

brazzmonkey · 2006-06-28 08:08:01

come on kid, don't be stupid... try to post something useful instead of foolish primitive linux geek words...

and i think gentoo isn't for the impatient, whereas archlinux is. as a matter of fact, i decided to become patient again. so please think twice before you post your philisophical thoughts. software is a tool, not a way of life... open your mind...

Brute · 2006-06-28 12:42:07

Maybe it will help somebody...
I use mkinitcpio (now in current) and it works well, I don't have useless modules loaded.

mkinitcpio -g yourimage.img

and put it in /boot. Then edit /boot/grub/menu.lst and replace initrd26.img by yourimage.img.
Reboot and type lsmod to see the difference !

Arch Linux

#1 2006-06-22 12:48:49

how do i remove/stop useless processes

#2 2006-06-22 13:21:22

Re: how do i remove/stop useless processes

#3 2006-06-22 13:31:41

Re: how do i remove/stop useless processes

#4 2006-06-22 18:01:28

Re: how do i remove/stop useless processes

#5 2006-06-22 18:10:14

Re: how do i remove/stop useless processes

#6 2006-06-22 18:41:42

Re: how do i remove/stop useless processes

#7 2006-06-22 20:36:27

Re: how do i remove/stop useless processes

#8 2006-06-22 21:30:32

Re: how do i remove/stop useless processes

#9 2006-06-22 21:37:17

Re: how do i remove/stop useless processes

#10 2006-06-22 22:02:51

Re: how do i remove/stop useless processes

#11 2006-06-22 22:46:35

Re: how do i remove/stop useless processes

#12 2006-06-23 02:23:11

Re: how do i remove/stop useless processes

#13 2006-06-23 07:32:47

Re: how do i remove/stop useless processes

#14 2006-06-23 16:25:00

Re: how do i remove/stop useless processes

#15 2006-06-23 20:41:39

Re: how do i remove/stop useless processes

#16 2006-06-26 07:40:17

Re: how do i remove/stop useless processes

#17 2006-06-26 09:11:51

Re: how do i remove/stop useless processes

#18 2006-06-27 07:46:54

Re: how do i remove/stop useless processes

#19 2006-06-27 17:09:33

Re: how do i remove/stop useless processes

#20 2006-06-28 08:08:01

Re: how do i remove/stop useless processes

#21 2006-06-28 12:42:07

Re: how do i remove/stop useless processes

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