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


Channel log from 1 October 2018   (all times are UTC)

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07:35
<Hyperbyte>
alkisg, do you know of any tweaks/trics I can try to perform to speed up thin clients that are slow with full-screen things, like switching applications?
07:35
<alkisg>
Hi Hyperbyte
07:36
I haven't worked with thin clients for a long time now :)
07:36
Switching applications is slow? How so?
07:37
<Hyperbyte>
alt+tab
07:37
If I do that, it takes a second or so to switch
07:37
<alkisg>
No I mean, is it slow on the server too, or is it about the remote part that makes it slow?
07:37
Because I doubt that screen transfering would need 1 sec
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07:44
<Hyperbyte>
I have no idea. I have no screen attached to the server nor GUI or something. It's in a datacenter.
07:45
<alkisg>
Hyperbyte: what desktop environment is that?
07:45
<Hyperbyte>
I can tell you Chromium is killing the CPU
07:45
MATE.
07:45
<alkisg>
Try with 2 xterms open and nothing else
07:46
So that there's no cpu/ram overhead involved
07:46
If it happens there too, then it might be a xorg/networking issue
07:46
<Hyperbyte>
That would be a good experiment
07:47
I have X_COLOR_DEPTH=16 and LDM_DIRECTX=True in lts.conf, that's about all the optimizations I can think of.
07:47
<alkisg>
1 sec doesn't sound related to xorg/network
07:48
You have full gigabit, don't you?
07:48
<Hyperbyte>
Yeah, fiber.
07:48
<alkisg>
Fiber to the clients? That sounds weird
07:48
<Hyperbyte>
Well clients are connected via cat cables, but fiber to the server.
07:48
<alkisg>
k
07:48
<Hyperbyte>
It should all be gigabit.
07:49
<alkisg>
And client resolution = 1920x1080?
07:49
<Hyperbyte>
Yeah should be, on at least a few of them (they all have different screens)
07:49
I think my main problem is web browsers killing the CPU. :-(
07:57
<alkisg>
True, that's where fat clients are useful :)
07:58
<Hyperbyte>
Yeah but at this location I don't have the hardware for it.
07:59
<alkisg>
You can't force miracles... thins = slow, they'll have to live with that
08:00
<Hyperbyte>
That's what I told them, but I was thinking maybe I can find some tweak or tric I didn't know yet.
08:02
Clients are 1.6ghz Intel Atoms with 1 GB RAM. That's not good enough to meet their web browsing needs.
08:06
I'd love to run some applications on the clients as localapps, but since almost everything is browser based nowadays...
08:12
<alkisg>
Yeah if a client can run a browser, it deserves to be fat, if not, there's usually not much point in using localapps anyway
08:12
That's why in ltsp6 we're not planning to support thins, localapps, ltspfs, ldm, etc etc
08:13
<highvoltage>
ltsp6 ♥ :)
08:13
<alkisg>
:D
08:13
A use case where localapps are useful is e.g. tuxpaint in pentium 4's
08:13
Those can't run a browser but they can run tuxpaint etc
08:13
In a few years when most of the edu apps will be html5, that will be again a moot point
08:40
<Hyperbyte>
Yeah, the whole webapps/html5 movement is great, but quite a disaster for thin clients. :-)
08:45
<highvoltage>
I think javascript is a much bigger issue.
08:48
<alkisg>
On the plus side, html5 means we can have lots of apps in linux; while with .exe we don't
08:52
<Hyperbyte>
alkisg, that's true... like I said, it's great. :-)
08:53
Just means we have to abandon our thin clients. Which also makes sense, because our phones are faster than our thin clients.
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14:19
<mwalters>
Hyperbyte: we do localapps w/ chrome... still have some atoms, some dinky celerons. Seems to work OK for most users
14:20
(thin clients doing localapps chrome)
14:21
running into issues with chrome right now, though, that I haven't been able to pin down
14:21
latest gmail update has really put a hurt on them too
14:21
<alkisg>
Still on 14.04?
14:21
<mwalters>
:D yup
14:21
<alkisg>
:)
14:22
<mwalters>
Really have no idea what's going on, even downgraded chrome to the august release and it's still blowing up
14:22
solution right now is "Use firefox" ;)
14:44
alkisg: thinking about blowing away our chroot as a sanity check. Anything beyond deleting my current chroot and rerunning ltsp-build-client?
14:44
Looks like http://wiki.ltsp.org/wiki/Configuration#ltsp-build-client.conf is for a newer version... I can't find lts-build-client.conf ;)
14:44
or lts-server.conf for that matter
14:48
<alkisg>
You need to create it
14:48
There's no lts-server.conf anywhere
14:48
<mwalters>
oic
14:49
Guessing I just need to follow "Installing LTSP in "chroot" mode
14:54
<alkisg>
!install
14:54
<ltsp>
install: http://wiki.ltsp.org/wiki/Installation/Ubuntu for Ubuntu, or http://wiki.ltsp.org/wiki/Installation for other distributions
14:55
<alkisg>
mwalters: this is the best tutorial, not sure if it applies 100% in older versions
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15:12
<mwalters>
Thanks
15:12
Yeah, there was some other steps my boss mentioned, moving sources list etc
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