[K12OSN] Help VNC crash w/firefox

Wed Apr 15 16:51:51 UTC 2009

2009/4/14 "Terrell Prudé Jr." <microman at cmosnetworks.com>:
> As I recall, the X11 issue happens regardless of which browser you use, be
> it Firefox, Konqueror, Epiphany, CucamongaBrowser, etc.
>
> But he's using VNC, so this might not necessarily apply anywhere near to the
> same degree.  My guess is that VNC is probably much like the early Citrix
> RDP clients that could run in relatively low DRAM.
>
> Those PS/ValuePoint 6381's use 72-pin SIMMs.  What I would suggest Alberto
> do, if he wants to use those ValuePoints, is either of the following:
>
> 1.)  Pick up some 72-pin SIMM memory, enough to upgrade to at least 8MB
> (more is better, of course).  Or....
>
Last night I can stabilize the client and no more freezes... (for now...)
I just put more inodes in the roofs image (1000 inodes) and I
eliminate my mini-busybox experiment and I recompile with NOTHING but
ash (sh), echo, date, ifconfig, insmod, uname and another link to some
binary tool...

[in fact, if you try to use this micro distro outside of GUI client
(graphic), its a trash... do not offer nothing, but is the only way
that I can know to run 4MB ram machines...]

Netx I rebuild all rootfs image adjusting the new size, and I did
enter to sites like WIKIPEDIA and ADOBE.com! without freeze!!!

Just only the render of web pages is slow, but is the any problem!
because the opneoffice apps for example works nice!

> 2.)  Cannibalize DRAM from some of those 1,500 and make 750 of them with 8MB
> DRAM, since he's discovered that 8MB works.
In the past here a people build a minidistro that runs w/8mb, based in
the hint of Csaba Henk of LFS.
Next, I based this microdist in the same hint, but I reduce everything
I can and modif some aspects, nothing more.
>
> Either way, it looks like he's going to have to upgrade the DRAM on those
> boxes.
>
In some time, this machines run to the creep... but for the moment we
can use for kinder garden and primary schools...
> --TP
> _______________________________
> Do you GNU?
> Microsoft Free since 2003--the ultimate antivirus protection!
>
>
> Rob Owens wrote:
>
> I recall a lot of discussion about 6 months (or maybe a year) ago about
> Firefox causing thin clients to crash when many tabs were open.  I think it
> boiled down to images that Firefox loads get cached by the X server, and
> once the X server is out of RAM it crashes.  You have only 4 MB for your X
> server, so it is crashing instantly (images on your home page use up all 4
> MB, perhaps).
>
> Have you tried other browsers?  I'm not sure if it's a Firefox thing or if
> all browsers will behave the same.
>
> -Rob
>
> On Tue, Apr 14, 2009 at 07:30:56PM -0300, Alberto Castillo wrote:
>
>
> Hi everybody!
> I write from Argentina.
>
> I recently build a micro-distro that runs with i486 w/4MB ram (yes...
> just four megas).
> This micro-distro have a Xclient from a vnc-client (svncviewer).
> All apps run nice and with a good performance, but when I try to
> navigate with firefox, the vnc connection closes and the Xclient
> crashes and freeze!!!...
>
> Here a only that I can get of /var/log/messages: (I login w/user 'educa1')
>
> *****************************************************************
> Apr 14 09:23:58 server xinetd[7823]: START: vnc-800x600x16 pid=8789
> from=192.168.0.100
> Apr 14 09:24:23 server gconfd (educa1-8890): comenzando (versión
> 2.14.0), pid 8890 usuario «educa1»
> Apr 14 09:24:23 server gconfd (educa1-8890): Se resolvió la dirección
> «xml:readonly:/etc/gconf/gconf.xml.mandatory» a una fuente de
> configuración de sólo lectura en la posición 0
> Apr 14 09:24:23 server gconfd (educa1-8890): Se resolvió la dirección
> «xml:readwrite:/home/educa1/.gconf» a una fuente de configuración
> escribible en la posición 1
> Apr 14 09:24:23 server gconfd (educa1-8890): Se resolvió la dirección
> «xml:readonly:/etc/gconf/gconf.xml.defaults» a una fuente de
> configuración de sólo lectura en la posición 2
> Apr 14 09:24:25 server hcid[2127]: Default passkey agent (:1.525,
> /org/bluez/applet) registered
> Apr 14 09:24:25 server pcscd: winscard.c:304:SCardConnect() Reader
> E-Gate 0 0 Not Found
> Apr 14 09:24:25 server last message repeated 4 times
> Apr 14 09:24:25 server gconfd (educa1-8890): Se resolvió la dirección
> «xml:readwrite:/home/educa1/.gconf» a una fuente de configuración
> escribible en la posición 0
> Apr 14 09:25:46 server xinetd[7823]: EXIT: vnc-800x600x16 status=0
> pid=8789 duration=108(sec)
> Apr 14 09:25:53 server gconfd (educa1-8890): El servidor GConf no está
> en uso, cerrándolo.
> Apr 14 09:25:53 server gconfd (educa1-8890): Finalizando
> ********************************************************************
>
> As you can see, xinetd suddenly closes the vnc connection.
> When I put more ram the crash dissapear (4MB more, total=8MB), but I
> really need to use this machines (near of 1500) of 4MB ram, the
> machines are a IBM valuepoint-425SX model 6381.
> A few days ago, I can not neither open firefox (the free mem that bios
> tell me are 3072Kb, kernel 509Kb-bzipped, rootfs-290kb-gz).
> Next, I disable the ROM in RAM and I get near of 320Kb, and then I can
> navigate only in some pages, that have a few text nothing more...
> I did read that is a bug of Xorg, and I did update it, but nothing....
> I have been thinking come back to fedora 5 -4 -3 -2 -1 or RH9, and try
> to get some repos (especially non-free)
> Any can help me? or give me any idea?
> Thankyou a lot!
> Alberto Castillo
>
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