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