IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 5 May 2015   (all times are UTC)

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04:06
<bojan>
How to improve performance in clients like speed up rthe client pc's??
04:10
<rwien>
Thin or fat clients?
04:15
<bojan>
rwien:What is the difference between thin and fat clients??
04:16
rwien:I am using p4 computers with 2 GB RAM and my server is i7 processor with 8 GB RAM
04:16
<rwien>
bojan: Thin clients have the software processing and video rendering happening at the server level, and fat clients do processing locally.
04:17
<bojan>
rwien:I am making some applications to work on eating RAM of client and some applications from server RAM
04:17
<vagrantc>
bojan: with 2GB of ram, fat clients might improve performance
04:17
<rwien>
If they are FAT clients then adding ram is probably the only thing you can do to improve performance. If they are thin clients then a better performing server is the answer there.
04:17
2Gb is ok for Fat clients.
04:18
What type of applications are you running?
04:18work_alkisg is now known as alkisg
04:18
<bojan>
rwien:i am making libreoffice to work from server RAM so it is the only application looking slow performance
04:19
<alkisg>
p4 at what MHz?
04:19
<vagrantc>
bojan: i would recommend not running anything as remoteapps
04:19
<bojan>
vagrantc:i have installed some application in chroot and it is eating clients RAM memory and also it is working good
04:19
<vagrantc>
bojan: just run everything there then
04:19
will probably help.
04:20
<bojan>
vagrantc:How to do that?
04:20
<vagrantc>
!fatclient
04:20
<ltsp`>
I do not know about 'fatclient', but I do know about these similar topics: 'fatclients', 'fatclient-printers'
04:20
<bojan>
alkisg:I dont know the MHz sorry
04:20
<vagrantc>
!fatclients | echo bojan
04:20
<ltsp`>
bojan fatclients: You may find some info about the Ubuntu/LTSP implementation of fat clients at https://help.ubuntu.com/community/UbuntuLTSP/FatClients
04:20
<alkisg>
If they are at <= 2.0 GHz they're better of as thin clients
04:20
<vagrantc>
alkisg: really?
04:20
<alkisg>
Especially those at 1.7
04:20
Yes, with an i7 server...
04:20
The gnome menu takes 1 sec to highlight the next item there in 1.7 p4's...
04:21
<rwien>
alkisg: I disagree. I have all 1.6Ghz fat clients that run amazingly well.
04:21
<bojan>
alkisg:okay
04:21
<alkisg>
rwien: are they really p4?
04:21
Can you post the /proc/cpuinfo of them?
04:22
P4's at 1.7 GHz can't play youtube videos full screen
04:22
<rwien>
alkisg: Embedded AMD G-T40E.
04:22
<alkisg>
rwien: then it's not p4
04:22
<rwien>
6 watt monsters.
04:22
True.
04:23
<alkisg>
I'm not talking about the MHz
04:23
There are many good CPUs at 1.6
04:23
It's specifically p4's that are the issue
04:23
I don't think many at 1.6 exist, the 1.7 models are much more frequent, and with an i7 server, they go better as thin clients
04:23
<rwien>
I do have several P4s but they are over 2Ghz. So you could be right there.
04:23
<bojan>
http://paste.ubuntu.com/10988186/
04:24
<rwien>
bojan: OH!! 1Ghz. Haven't seen those for awhile.
04:24
<bojan>
rwien:Even its working very good for me
04:25
rwien:I have running freecad a mechanical designing tool runiing with the computer
04:25
<alkisg>
bojan: that's not a p4, what is it?
04:25
<rwien>
bojan: That is amazing. Another testament to LTSP!
04:25
<alkisg>
There are no p4 CPUs at 1 GHz afaik
04:26
<vagrantc>
3dnow suggests amd, no?
04:27
<bojan>
alkisg:sorry its AMD
04:27
<alkisg>
true
04:27
bojan: can you check the exact model?
04:27
<bojan>
alkisg:http://paste.ubuntu.com/10988193/
04:27
<alkisg>
Yup, that's waaaay faster than a p4
04:28
I agree with the others, make them fat clients
04:28
<bojan>
alkisg:How to ??
04:28
<alkisg>
vagrantc gave you a link above, about fat clients
04:28
Here's another one:
04:28
!ltsp-pnp
04:28
<ltsp`>
ltsp-pnp: ltsp-pnp is an alternative (upstream) method to maintain LTSP installations for thin and fat clients that doesn't involve chroots: https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
04:28
<vagrantc>
oh yeah, ltsp-pnp is the way to go
04:29
<alkisg>
It's even a 64 bit processor, it can even run amd64 arch
04:29
<vagrantc>
alkisg: in general, if they're running a bunch of apps as localapps and they run well, chances are everything will run well
04:29
<rwien>
Can you modify the lts.conf file to enable FAT clients?
04:29
<bojan>
alkisg:yes i am running amd64 arch only
04:30
<rwien>
Or do you have to re-build the image?
04:30
<alkisg>
rwien: no you need a new chroot
04:30
Or install some *-desktop package in it
04:30
<rwien>
Dang!
04:30
<vagrantc>
well, you need to install some additional packages in the hroot
04:30
and rebuild the image
04:30
or blow away the chroot and run ltsp-pnp ... :)
04:30
<alkisg>
vagrantc: there are xorg issues with p4 CPUs, for some reason, maybe l2 cache, they're extremely slow at some graphics operations. So they can e.g. run tuxpaint fine, but suck a lot at libreoffice, firefox etc
04:31
<bojan>
alkisg:I need to completely remove and reinstall for ltsp-pnp configuration??
04:31
<alkisg>
Like the ones recently brought up at the ML
04:31
bojan: no, you only need to remove the chroot and do 1-2 other things
04:32
<bojan>
alkisg:But i have installed many applications in chroot
04:32
alkisg:What will happen for that all??
04:32
<alkisg>
Ah, then do this:
04:32
!fatclients
04:32
<ltsp`>
fatclients: You may find some info about the Ubuntu/LTSP implementation of fat clients at https://help.ubuntu.com/community/UbuntuLTSP/FatClients
04:32
<vagrantc>
alkisg: you've definitely got a lot of good experience, but i do encourage people to just experiment and find out for their particular use-case
04:32
<bojan>
alkish:In this what is the steps i have to do??
04:32
<alkisg>
bojan, did you read the page/
04:32
?
04:33
<bojan>
alkisg:Its really confusing
04:33
<alkisg>
bojan: which distro/version are you using?
04:33
<bojan>
alkisg:ubuntu 12.04 precise
04:34
<alkisg>
With unity? Or gnome-flashback? Or other DE?
04:34
<rwien>
ltsp-pnp is very easy. It does get more "exciting" with non-standard setups like external DHCP services.
04:34
<bojan>
alkisg:How to find that??
04:34
<alkisg>
Google for "pictures" of the names I said
04:34
E.g. google for "ubuntu unity" and then click on "pictures"
04:34
Sorry, "images"
04:35
And see if it's the one you're using
04:35
Or, what's the output of this? ls /usr/share/xsessions/
04:36
<bojan>
alkisg:Should i take this from client or server??
04:36
<alkisg>
Server
04:36
(or thin client)
04:36
<bojan>
http://paste.ubuntu.com/10988218/
04:36
<alkisg>
gnome-shell?
04:37
<bojan>
alkisg:yes
04:37
<alkisg>
And what applications have you installed to the chroot?
04:38
<bojan>
alkisg:freecad,mplab,arduino,ipux,ktechlab,etc...
04:39
alkisg:And only that applications are running with local RAM
04:39
<alkisg>
bojan: do you have access to a thin client now/
04:39
Can you login there and paste a screenshot somewhere?
04:39
<bojan>
alkisg:yes using epoptes
04:40
<alkisg>
Ah ok then just open it with vnc and paste a screenshot
04:40
<bojan>
what screen shot you want??
04:40
<alkisg>
from the whole client screen, to see if you're using gnome-session
04:40
Because you have a lot of DEs
04:40
So that we can tell you what DE package to install to the chroot
04:41
<bojan>
alkisg:okay please wait
04:41
alkisg:But can you tell me some website for sharing screenshot or i will share my dropbox link
04:42
<alkisg>
bojan: go to epoptes -> help -> remote support, and put this there: srv1-dide.ioa.sch.gr
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04:43
<alkisg>
bojan: you're using unity
04:44
<bojan>
alkisg:Great man thank you
04:46
<alkisg>
bojan: this will make a backup of your existing chroot
04:46
It will take a lot of time, it's 10 GB
04:47
Press enter if you want that
04:47
<bojan>
ok
04:47
shall i click enter??
04:47
<alkisg>
Yes
04:47
After that, you're supposed to chroot to amd64 and install ubuntu-desktop
04:48
Ping me when it's finished...
04:48
<bojan>
ok
04:51
Ans please tell me what you are going to do??Because if any problem occurs i have to troubleshoot know
04:51
<alkisg>
Ah sorry check checking your network speed, as it's essential to ltsp
04:52
*just
04:52
<bojan>
Even i am new to linux not much expert like you
04:52
okay
04:54
<alkisg>
OK you don't have iperf can't really test, but it should be OK, you seem to have full gigabit
04:55
<bojan>
okay
04:56
alkisg:You there??
04:57
<alkisg>
Yes?
04:57
<bojan>
okay
04:57
i have a doubt why this 2d panel and sshd are running??
04:57
<alkisg>
I wasn't watching... what panel?
04:58
sshd is needed for ltsp logins
04:58
and the panel is the ubuntu desktop
04:59
<bojan>
oh ok
04:59
okay okay
04:59
now i understood
04:59
Is there any messenger LTSP recommends??
05:02
alkisg:You there??Backup over
05:03
Now??What installing??
05:03
<alkisg>
ubuntu-desktop in the chroot
05:03
So that it becomes a fat client
05:03
<bojan>
okay
05:04
alkisg:Okay
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05:07
<bojan>
alkisg:If i reinstall my server fro any problem i need to install these ubuntu -desktop also or i can take backup??
05:09
<alkisg>
Backup
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05:13
<bojan>
alkisg:installed
05:15
<alkisg>
When it finishes, reboot clients
05:16
bojan: you have the stock ubuntu ltsp
05:16
It's a bit old, you can put a newer version from my ppa
05:16
<bojan>
alkisg:Means??
05:16
<alkisg>
Anyway ok leave that for later
05:16
<bojan>
okay
05:17
alkisg:Please share some useful materials which you write of your personal
05:17
<alkisg>
You mean that you want me to give you advice?
05:17
General advice for ltsp?
05:26
<bojan>
Backup the ltsp folder will works if i paste the same thing in any other server??
05:26
Or i want to any confioguration for that??
05:27
<alkisg>
You can rsync the chroot between servers and it will work fine
05:28
<bojan>
alkisg:No ned to configure anything??
05:28
<alkisg>
Nothing special, but of course you do need to install ltsp-server, to run ltsp-update-image etc
05:28
<bojan>
alkisg:Okay
05:30
But i dont find the shutdown options and all in the rebooted clients
05:30
<alkisg>
Which client has been rebooted?
05:30
<bojan>
vijayan
05:30
username
05:39
alkisg:what happen?
05:39
<alkisg>
bojan: there seems to be something wrong in your chroot
05:39
Your applications are not shown normally
05:39
Sorry though, work calls...
05:39
<bojan>
alksig:Can you please make it as past??
05:39
<alkisg>
Sure
05:40
When it finishes, reboot clients, it's like before
05:41
<bojan>
alkisg:No need to purge the ubuntu desktop you installed??
05:41
<alkisg>
No, it's in the other folder now
05:41
We used the backup
05:41
The fat chroot now is in /opt/ltsp/ltsp-fat-amd64
05:41
Sorry in /opt/ltsp-fat-amd64
05:41
<bojan>
alkisg:Okay thank you
05:42
<alkisg>
You can delete it if you don't want to test it more
05:42* alkisg waves, work calls...
05:42
<bojan>
alkisg:No mind alkisg am in learning mode..I believe you
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09:55
<Faisal_>
I want to know about LTSP protocol support
09:57
<alkisg>
What do you mean?
09:57
Faisal_: There's no "ltsp protocol" if that's what you're asking...
09:57
LTSP uses a lot of services like tftp, nbd, nfs...
10:03
<Faisal_>
LTSP using which protocol for thinclient
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10:04
<Faisal_>
How can we connect our thinclient with LTSP server
10:04
currently we have just 4 protocols in our thinclient to connect terminal server which are Citrix, RDP, VMware and web
10:05
Will you please guide me which one is supported by LTSP
10:09
<alkisg>
It's called "Xorg"
10:09
It's the classic protocol that Linux uses
10:09
It supports network connections too...
10:09
But if you want RDP, Linux also does support RDP, but it's not ltsp related
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10:11
<Faisal_>
Thank you so much for your support
10:16
<alkisg>
You're welcome
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10:51
<bojan_>
IS there any messenger for LTSP clients to communicate (LTSP recommends)??
10:56
<alkisg>
No, you can use whatever messenger you want
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11:03
<bojan_>
alkisg:Can u refer some good messenger
11:03
<work_alkisg>
Ask in #ubuntu
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15:43
<jtornero>
Hello all. A basic thing. Need to copy some python scripts to chroot from the base system. How to proceed?
15:48
Forget it - seems I did it with mount --bind and running setup script. Thanks anyway
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17:01
<tomtomtoooom>
a question about ltsp-localapps
17:01
i want to change the .desktop files that are used to launch local apps
17:01
but i can not seem to find where i have to set them
17:04
They ae created automatically on the LTSP server: /tmp/ltsp-localapps-tomb-lBCuCq/applications/firefox.desktop
17:05
based on /usr/share/applications/firefox.desktop in the chroot
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