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Old 12-12-2007, 10:57 PM
"Todd O'Bryan"
 
Default XServer out of memory issues

Any progress on the issue of Firefox and OpenOffice trying to cache
images in the thin client memory and then dying that Jim Kronebusch
identified a while ago?

I'm still seeing an awful lot of terminal crashes. During my planning
period today, a student was working on an Impress presentation and,
after the third crash, finally complained about it. I sent him to work
on the monitor connected to the server and his problems, as expected,
went away. Fixing this would make my students' complaints about "Why
don't we have Windows machines?" go down considerably.

Todd

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Old 12-13-2007, 08:09 PM
"Todd O'Bryan"
 
Default XServer out of memory issues

Does anyone have contacts at OO.o they could mention this to? If we
just had a way to prevent applications from trying to cache stuff in
video RAM that they don't need to, about 80% of my thin client
crashing problems would be solved.

Todd

On Wed, 12 Dec 2007 18:57:35 -0500, Todd O'Bryan wrote

> Any progress on the issue of Firefox and OpenOffice trying to cache
> images in the thin client memory and then dying that Jim Kronebusch
> identified a while ago?
>
> I'm still seeing an awful lot of terminal crashes. During my planning
> period today, a student was working on an Impress presentation and,
> after the third crash, finally complained about it. I sent him to work
> on the monitor connected to the server and his problems, as expected,
> went away. Fixing this would make my students' complaints about "Why
> don't we have Windows machines?" go down considerably.
>
> Todd

Firefox, yes, but you won't see that until FF3 is released.
OpenOffice, no. The only
fix right now is the XRAMPERC hack which I think is included in Gutsy,
which only fixes
the client from crashing, but you still loose the offending
application data. I never
did get to filing a bug with OpenOffice, if you wanted to do that it
would be a good
start. Xorg still thinks this is an impossible problem to solve,
somehow making it not
their problem. And unfortunately all these issues are only seen with
thin clients,
making the focus less a priority. Not that they aren't there in fat
clients, just not
noticed since the machine doesn't lock up.

I think the OLPC guys were hammering on Xorg for this as well. I was
hoping since they
are a fairly large project they might have better luck. Ubuntu is
large as well, but
thin clients aren't the focus. Where OLPC only runs in a low resource
environment, so
it is there complete focus.

Jim

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Old 12-13-2007, 08:36 PM
"Jim Kronebusch"
 
Default XServer out of memory issues

On Thu, 13 Dec 2007 16:09:01 -0500, Todd O'Bryan wrote
> Does anyone have contacts at OO.o they could mention this to? If we
> just had a way to prevent applications from trying to cache stuff in
> video RAM that they don't need to, about 80% of my thin client
> crashing problems would be solved.
>
> Todd

Well, I have a "shim" file somewhere written by a user on the xorg mailing list. Jim
McQuillan (likely a good source :-) recommended against such a hack because it is a very
sloppy solution. Basically the shim script is used to call on the application and then
dumps the cache data for the app since the app doesn't have the capability. If you want
to play around with it let me know and I'll send it to you. I did try it to launch
firefox and it worked pretty well, but I never tried it with OpenOffice. Even though it
isn't a good solution, it might get you by until a good one is found.

Jim

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Old 12-13-2007, 08:56 PM
Gavin McCullagh
 
Default XServer out of memory issues

Hi,

On Thu, 13 Dec 2007, Jim Kronebusch wrote:

> On Thu, 13 Dec 2007 16:09:01 -0500, Todd O'Bryan wrote
> > Does anyone have contacts at OO.o they could mention this to? If we
> > just had a way to prevent applications from trying to cache stuff in
> > video RAM that they don't need to, about 80% of my thin client
> > crashing problems would be solved.
>
> Well, I have a "shim" file somewhere written by a user on the xorg
> mailing list. Jim McQuillan (likely a good source :-) recommended
> against such a hack because it is a very sloppy solution. Basically the
> shim script is used to call on the application and then dumps the cache
> data for the app since the app doesn't have the capability. If you want
> to play around with it let me know and I'll send it to you. I did try it
> to launch firefox and it worked pretty well, but I never tried it with
> OpenOffice. Even though it isn't a good solution, it might get you by
> until a good one is found.

Could you post it (maybe make sure the originator doesn't mind)? Perhaps
a few of us could package up the sloppy solution for people who need it
badly. I wouldn't suggest it become part of edubuntu, but it might be
useful for some people to have the fix. Perhaps we should also have the
patched firefox-3 version.

That bugzilla entry on firefox seems to have gone silent.

Gavin


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Old 12-24-2007, 12:26 PM
Gavin McCullagh
 
Default XServer out of memory issues

Hi,

On Thu, 20 Dec 2007, Jim Kronebusch wrote:

> Attached is the shim file created by Brian Paul. Below are his
> instructions on how to use it. I just did a quick proof of concept with
> it, but no further testing. I assume this could be used with any
> application, not just Firefox.

It would be interesting to compile it, put it in /usr/local/lib/ and add
the export line

export LD_PRELOAD=/usr/local/lib/shim.so

into the LDM login command or perhaps /etc/profile. This should push this
hack to every thin client. It sounds like that should relieve people's
problems with thin clients running out of memory.

Gavin


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Old 12-24-2007, 12:32 PM
 
Default XServer out of memory issues

Thanks for your email. I'll be away on leave until 7th Jan.
Have a safe and happy Christmas

Rob Shugg



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