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


Channel log from 29 June 2010   (all times are UTC)

00:25alkisg has joined #ltsp
00:32dobber has joined #ltsp
00:34daduke has quit IRC
00:40gentgeen__ has quit IRC
00:43gentgeen__ has joined #ltsp
00:49mordocai has joined #ltsp
00:50dobber has quit IRC
00:56dobber has joined #ltsp
01:30gentgeen__ has quit IRC
01:30gentgeen__ has joined #ltsp
01:37cyberorg has quit IRC
01:39sweetpi has quit IRC
01:43cyberorg has joined #ltsp
01:54johnny has left #ltsp
01:58johnny has joined #ltsp
02:09gnunux has joined #ltsp
02:37sweetpi has joined #ltsp
02:56sweetpi has quit IRC
03:01bobby_C has joined #ltsp
03:06mikkel has joined #ltsp
03:08Da-Geek has joined #ltsp
03:18bobby_C has quit IRC
03:45NeonLichT has quit IRC
03:48ogra_cmpc has quit IRC
04:02ogra_cmpc has joined #ltsp
04:55NeonLichT has joined #ltsp
06:13alkisg has quit IRC
06:13alkisg has joined #ltsp
06:30pmatulis has joined #ltsp
06:51mikkel has quit IRC
06:55
<zeitsofa>
hello :) i can not login from thinclients. No answer from server - how can i fix this?
06:56
<alkisg>
sudo ltsp-update-sshkeys && sudo ltsp-update-image
06:58
<zeitsofa>
hmm ok thanks i try it. did i have to run update-sshkeys everytime befor i update the image?
07:00
<alkisg>
No, only when the server IP is changed
07:19japerry has quit IRC
07:20komunista has joined #ltsp
07:26shawnp0wers has joined #ltsp
07:32japerry has joined #ltsp
07:38bobby_C has joined #ltsp
07:44Ghid0rah has joined #ltsp
07:52shawnp0wers has quit IRC
07:59chupacabra has quit IRC
07:59
<denisesball>
alkisg: that was an interesting test case
07:59
any idea what the cause is then?
08:00
<alkisg>
denisesball: see the follow up on the list, it's about the pixmas
08:00
pixmaps
08:00
<denisesball>
list?
08:00
<alkisg>
On the ltsp mailing list... ah, you didn't see it..
08:01
<denisesball>
no, i'm not on the list
08:01
<alkisg>
https://bugzilla.mozilla.org/show_bug.cgi?id=575523
08:01
that's the test case, but this has more info in it:
08:01
https://bugzilla.mozilla.org/show_bug.cgi?id=395260
08:01
<denisesball>
ah, so you did file a bug. nice!
08:02
<alkisg>
Also, if you run: MOZ_DISABLE_IMAGE_OPTIMIZE=1 firefox
08:02
...then it doesn't use pixmaps, so the clients shouldn't crash
08:02
<denisesball>
what is pixmaps exactly?
08:03* alkisg is the middle of something, bbiab...
08:40F-GT has quit IRC
08:49hawkI has joined #ltsp
08:51shawnp0wers has joined #ltsp
08:57F-GT has joined #ltsp
09:14shawnp0wers has quit IRC
09:34Faithful has joined #ltsp
09:40chupacabra has joined #ltsp
09:45chupacabra has quit IRC
09:57bobby_C has quit IRC
10:11staffencasa has joined #ltsp
10:16dobber has quit IRC
10:23Gadi has joined #ltsp
10:27otavio has quit IRC
10:28
<zeitsofa>
did anybody know how i have to configure dhcp3-server to use two pxe servers?
10:29
<atkuepker>
we usually end up declaring next-server and manually adding the option root-path lines to dhcpd that point to a given server.
10:32gnunux has quit IRC
10:34
<zeitsofa>
hmm i crate a nopaste http://nopaste.info/e507f43d0f.html how is the pleace for the second "next-server"?
10:37otavio has joined #ltsp
10:37
<atkuepker>
I usually put it in the subnet declaration, but I don't know whether that's required or not. I'd suggest reading through the documentation for DHCP
10:40
<zeitsofa>
http://nopaste.info/88e357d2e9.html :( i think thats not the right place for it. im search in dhcp doc for a solution. thx :)
10:45
<atkuepker>
always good to start with 'man dhcpd.conf'
10:46F-GT has quit IRC
11:10F-GT has joined #ltsp
11:16chupacabra has joined #ltsp
11:25Da-Geek has quit IRC
11:33Faithful has quit IRC
11:39hughessd has joined #ltsp
11:40
<hughessd>
hello ltsp
11:42
quick question: is it recommended to use RDIMMs or UDIMMs for a LTSP server?
11:46Faithful has joined #ltsp
11:48
<hughessd>
hmmmm.....
11:48
maybe i should come back at night
11:48
when everyone is awake....
11:49
<alkisg>
Give it some time... :)
11:49
<zeitsofa>
hughessd: we have RDIMMs and it works fine.
11:50
hughessd: because wi didn't have UDIMMs for our server :)
11:50
*we
11:51Faithful has quit IRC
11:51
<atkuepker>
sufficient memory and stable hardware is all that really matters, IMHO. Whether the memory is ECC Registered or not hasn't one of the more critical aspects of our dozen or so LTSP deployments.
11:53
We're using IBM X3550 and x3400 servers nowadays. They run quite well and have a rather good warranty. While I used to be an IBMer, I've not ever had any problems with the hardware either.
11:54
and the minor things that have come up were repaired promptly and without hassle.
11:56chupacabra has quit IRC
11:57Faithful has joined #ltsp
11:57secayford has joined #ltsp
12:00
<denisesball>
alkisg: MOZ_DISABLE_IMAGE_OPTIMIZE=1 isn't an lts.conf option correct?
12:00
<alkisg>
No, it's an environment option
12:01
I.e. close firefox, open a terminal, and type:
12:01
MOZ_DISABLE_IMAGE_OPTIMIZE=1 firefox
12:01komunista has quit IRC
12:01
<denisesball>
yeah i can't really tell all the techs to do that...is there a way to set it system wide?
12:01
<alkisg>
Then go to the page that crashed your client - it shouldn't crash now.
12:01
Yes, in /etc/profile or somewhere similar.
12:02
<denisesball>
ok i will try that
12:02
and the bugs you sent me, looks like an old issue huh?
12:02
<alkisg>
Yup
12:02
So I'm not too optimistic about a quick solution
12:03
<denisesball>
sucks, and its just a firefox thing too. konqueror doesn't have this issue. also, old firefox doesnt seem to have the issue either
12:03
i have debian 4 servers with iceweasel 2.0 and they dont crash
12:09
alkisg: "MOZ_DISABLE_IMAGE_OPTIMIZE=1 firefox" still couldnt load the site
12:09
did you have luck with it?
12:10
<alkisg>
Yes, it worked fine. Did you already have firefox open when you ran it?
12:10
<denisesball>
no i rebooted the whole terminal and logged in and ran it from terminal
12:10
<alkisg>
I tried with an image that should cause 800MB of RAM usage by Xorg, so I'm pretty sure that works around the problem in my case.
12:10
(vbox client)
12:10
<denisesball>
this is with the default NBD swap and X_RAMPERC set to 80
12:10
<alkisg>
(with 128 MB RAM)
12:10
<denisesball>
is your example public?
12:11
<alkisg>
Yes, it's on the bug report
12:11
<denisesball>
jgarigen.com still hung it like crazy
12:12
clicking your 5120x5120 without setting MOZ_DISABLE_IMAGE_OPTIMIZE=1 completely hangs the term
12:13
<alkisg>
distro/version?
12:13
<denisesball>
ubuntu 10.04
12:13
<hughessd>
zeitsofa & atkuepker: thank you for the info. very helpful.
12:13
<alkisg>
Yes, without that it also hangs for me too
12:13
But with that, it doesn't
12:13
<denisesball>
ok lemme try with it
12:14
i guess i misread the your bug saying that one was ok
12:14
<hughessd>
sorry for taking so long to respond. stepped out for a sec.
12:14
<alkisg>
jgarigen doesn't hang here
12:15
Ooops scratch that.
12:15
The image loaded, but _then_ it hanged
12:15
<denisesball>
this is such a big problem i think
12:16
lots of sites embed images improperly
12:16
<alkisg>
So there must be some other case which uses pixmaps other than the big image
12:27
<denisesball>
even with MOZ_DISABLE_IMAGE_OPTIMIZE=1 loading your 5120x5120 crashes my term
12:28
should i increase my X_RAMPERC=80 to 90 or even try removing it?
12:28atkuepker has quit IRC
12:30Faithful has quit IRC
12:33
<alkisg>
It shouldn't matter.
12:33
<denisesball>
alkisg: i let it go and it JUST loaded
12:33
<alkisg>
It shouldn't use any xorg memory at all, in this case.
12:33
<denisesball>
so took almost 6 minutes to load that image
12:34
<alkisg>
Do you have compcache enabled?
12:34
<denisesball>
and the terminal was completely unusable that whole time
12:34
<alkisg>
(== the default?)
12:34
<denisesball>
what is that?
12:34
<alkisg>
compcache takes away 25% of your RAM to make a swap file out of it
12:35
For low ram clients this isn't good, and if you have an nbd swap file, you don't even need it
12:35
So if you put nocompcache in pxelinux.cfg/default, you free that 25% of RAM
12:35
<denisesball>
i havent done anything like that
12:35
just using the nbdswap
12:35
<alkisg>
That's the main cause of the "client goes slow" problems
12:36
(other than ldm_directx, that is)
12:37Faithful has joined #ltsp
12:42
<denisesball>
so alkisg are you suggesting i enable that then?
12:43
<alkisg>
Yup I suggested that to you yesterday...
12:43
It helps a lot for 128 MB clients.
12:43
(it's not specific to this case; it just frees an additional 30MB RAM on your clients)
12:44
<denisesball>
sorry dont know how i missed that
12:44
is it in the manual?
12:44
<alkisg>
No
12:44
It's not specific to LTSP, it's an Ubuntu thing
12:45
<denisesball>
ok, so where should i look to find out how to do it?
12:46
<alkisg>
gedit /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default
12:46
And put "nocompcache" right next to "quiet splash"
12:50Lns has joined #ltsp
12:51chupacabra has joined #ltsp
13:02komunista has joined #ltsp
13:08* Lns waves to fellow ltsp people
13:12
<Ghid0rah>
Greetings LNS.
13:13
<Lns>
Hi Ghid0rah
13:13
how are you?
13:13
<Ghid0rah>
I'm doing well, I got my LTSP server in testing with 12 terminals
13:13
actual students using them... life is good.
13:16
<Lns>
good!!
13:16* Lns likes hearing about students using linux =)
13:18rjune has quit IRC
13:21
<Lns>
Ghid0rah: what's your setup again? I forgot
13:22
<Ghid0rah>
I currently have 1 LTSP server running on a VM
13:22
In production we have 3 LTSP Servers running like LTSP 4.2?
13:22
running fedora
13:23
I'm attempting to replace those 3
13:23
I had wanted to cluster 3 new ones... but I don't think I'm going to get to it in time.
13:24
<Lns>
nice
13:25
Anyone here using KOffice (KPresenter in particular) with LTSP? If so, how does it stack up against OOo Impress as far as stability and usage on a terminal?
13:37
<denisesball>
alkisg: do i need to do ltsp-update-image after adding to /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default?
13:37
<alkisg>
No
14:18rjune has joined #ltsp
14:35hughessd has quit IRC
14:44pmatulis has quit IRC
14:49dobber_ has joined #ltsp
14:55
<denisesball>
alkisg: i tried the nocompcache, this is my output from my terminal:
14:55
testagent@ltsp133:~$ free -m
14:55
total used free shared buffers cached
14:55
Mem: 117 114 2 0 41 32
14:55
-/+ buffers/cache: 41 76
14:55
Swap: 93 0 9
14:55
is that normal?
14:55
seems like a lot of RAM used
14:58johnny has left #ltsp
15:00
<alkisg>
denisesball: lsmod | grep ram
15:01
<denisesball>
from the localapp xterm?
15:01
<alkisg>
Yes
15:01
(you may need to do /sbin/lsmod)
15:02
<denisesball>
1 sec, sorry
15:02
<alkisg>
Because it looks to me that you have 64 MB NBD_SWAP and 30 MB compcache swap.
15:04
<denisesball>
append ro initrd=initrd.img quiet splash nocompcache nbdport=2000
15:04
thats my /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default line
15:04
<alkisg>
It looks ok
15:04
<denisesball>
1 sec until my term is back up
15:04
<alkisg>
Did you change your nbdswapd.conf to 93MB ?
15:04
<denisesball>
i actually deleted that file to put it back to default
15:06
testagent@ltsp133:~$ lsmod | grep ram
15:06
ramzswap 6362 1
15:06
xvmalloc 4074 1 ramzswap
15:06
lzo_decompress 2189 1 ramzswap
15:06
lzo_compress 1853 1 ramzswap
15:07
<alkisg>
Right, so compcache wasn't disabled.
15:07
Hmm...
15:07
(you're losing 30 MB to that)
15:07
<denisesball>
yeah, i wonder why
15:07
<alkisg>
It's a technique to make the live cd work with less than 512 RAM
15:08
<denisesball>
oh i think i know why
15:08
im booting using gpxe over the WAN with the commnands you taught me
15:09
kernel /ltsp/i386/vmlinuz ro initrd=initrd.img ip=${ip}:${next-server}:${gateway}:${netmask}:${hostname}:eth0:none
15:09
initrd /ltsp/i386/initrd.img
15:09
<alkisg>
Yeah I was about to ask you to cat /proc/cmdline
15:09
<denisesball>
sorry i didnt even think of that
15:09
<alkisg>
So yup, put "nbd_proxy=false nocompcache" there
15:09
(nbd_proxy will save you same more MB and speed)
15:10
<denisesball>
k, lemme make a new floppy
15:10
<alkisg>
Just press Ctrl+B
15:10
<denisesball>
oh, itll still load the floppy?
15:10
or u want me to type all that?
15:10
<alkisg>
Ah, you'll have to write all of it, so nah...
15:10
Make another floppy
15:11
<denisesball>
yeah, too long and id probly typo and it gets frustrating
15:11
ive done it a bunch before u taught me about the flopyy lol
15:12
does it matter what line i put that on? first, last middle etc?
15:13
obviously before boot vmlinuz
15:14
<alkisg>
It does matter, you need to put it on the same line as quiet splash
15:15
<denisesball>
i dont specify that in mine though
15:15
my script - http://pastebin.com/wnUD78ac
15:16
<alkisg>
In the kernel line
15:16
kernel /ltsp/i386/vmlinuz ro initrd=initrd.img ip=${ip}:${next-server}:${gateway}:${netmask}:${hostname}:eth0:none nbd_proxy=false nocompcache
15:17
<denisesball>
k
15:24
testagent@ltsp133:~$ free -m
15:24
total used free shared buffers cached
15:24
Mem: 117 114 2 0 41 32
15:24
-/+ buffers/cache: 41 75
15:24
Swap: 63 0 6
15:25
thats looks better for swap
15:25
but shouldnt there be more regular ram free?
15:26abeehc has quit IRC
15:29
<alkisg>
No, but there should be less buffers/cache... did you run free on both cases with the same programs open? E.g. you don't have firefox open in the second case, and not in the first, do you?
15:30
<denisesball>
i have nothing open in either except for gnome-terminal
15:33
<alkisg>
Anyway try firefox now, it should behave better than before.
15:33
(a little) :)
15:33abeehc has joined #ltsp
15:33
<denisesball>
haha ill try
15:34
thanks again alkisg, as always you are extremely helpful
15:34
and you see to be there at every hour of the day lol
15:34
<alkisg>
Heh... I'll have to leave for the next 2 years though otherwise I'm not going to finish my phd :)
15:34
Too many interruptions :)
15:35
<Lns>
Is lts.conf a place where I can put an environment variable for Firefox (not localapp) to pick up on a terminal? MOZ_DISAZBLE_IMAGE_OPTIMIZE=1 specifically
15:35
<denisesball>
Lns: no i think i asked that earlier and alkisg mentioned /etc/profile
15:35
<alkisg>
Lns, nope, try /etc/profile
15:35
<denisesball>
jinx
15:35
buy me a phd
15:35
<alkisg>
Heh
15:35
<Lns>
alkisg: denisesball thanks =)
15:36* alkisg is trying to write his CV in english, if any native speaker feels like reviewing it please pm me :)
15:36
<Lns>
have you guys been using that var? Does it seem to work ok?
15:37
<denisesball>
alkisg: of course i would! i owe you plenty
15:37
<alkisg>
Thanks! I'll PM you the link...
15:38
<denisesball>
k
15:49vagrantc has joined #ltsp
15:56* Lns waves to vagrantc
16:04* vagrantc waves
16:17bobby_C has joined #ltsp
16:17Gadi has left #ltsp
16:20dobber_ has quit IRC
16:30komunista has quit IRC
16:33johnny has joined #ltsp
16:45johnny has left #ltsp
16:49Lns has quit IRC
17:01Egyptian[Home] has quit IRC
17:08japerry has quit IRC
17:09alexqwesa has quit IRC
17:11alkisg has quit IRC
17:11alexqwesa has joined #ltsp
17:15Egyptian[Home] has joined #ltsp
17:36staffencasa has quit IRC
17:43vagrantc has quit IRC
17:45bobby_C has quit IRC
17:57secayford has left #ltsp
18:12Egyptian[Home] has quit IRC
18:20Selveste1 has quit IRC
18:25Egyptian[Home] has joined #ltsp
18:31moose-tek has quit IRC
18:31moose-tek has joined #ltsp
18:32Egyptian[Home] has quit IRC
18:46Egyptian[Home] has joined #ltsp
19:14pmatulis has joined #ltsp
19:49try2free has joined #ltsp
19:54try2free has left #ltsp
19:59Selveste1 has joined #ltsp
20:35nbnds has joined #ltsp
20:52Selveste1 has quit IRC
20:53Selveste1 has joined #ltsp
20:53nbnds has quit IRC
20:54nbnds has joined #ltsp
21:01moose-tek has quit IRC
21:03pmatulis has quit IRC
21:05Faithful has quit IRC
21:29dgroos has joined #ltsp
21:37nbnds has quit IRC
21:37Selveste1 has quit IRC
21:41dgroos has left #ltsp
22:29mordocai has quit IRC
23:03otavio has quit IRC
23:04otavio has joined #ltsp
23:08vagrantc has joined #ltsp