Re: HoHo

[James v. Z. <ja...@dv...>]

on SMP and hyperthreaded machines,

should read on uniprocessor and hyperthreaded

On Sun, 2005-12-25 at 23:06, James van Zeeland wrote:
> re: xorg (patched with isolate device) : 6.8.2-37 (FC4 P4)/ 6.7.0-14
> (FC2 SMP Athlon), nVidia 8xxx binary driver, 2.6.14-vz3.3xx kernel looks
> like a majic combination for me so far.
> 
> re: Zephyr; Not yet - I will probably look at it soon - I have SVHS
> outputs that I want to take advantage of for PVR and editing use; I am
> cautious on nested solutions - it strikes me, and I may be wrong, as a
> high overhead solution, no matter which way you turn. If zephyr is
> stable and reliable and takes up some of the discussed features, then
> I'm sure to start using it, but it probably won't be for multi-console
> use, generally speaking, although does raise the potential for reliable
> use of multi-head cards where this is not currently feasable. (including
> SVHS outputs :-)
> 
> The issues specifically resolved with these vz3.3xx kernel are : any
> console switching instability - I've tried quite hard and can no longer
> reproduce it. Even on a machine for which this has historically been a
> problem.
> 
> vesafb-tng is better, but not 100% - on SMP and hyperthreaded machines,
> no problem. On SMP boxes it remains unreliable.
> 
> I use vesafb-tng console on the HT P4 and vga16 framebuffer console on
> the SMP server. Neither show any sign of the issue. I haven't tested
> much with text mode console.
> 
> On the other hand, you do want to 
> > retain <ctrl><alt><bkspc> to reset the card. 
> 
> Absolutely. As Aivils pointed out - it's an emergency out. What I'm
> wondering is if there would be any benefit to introduce a forced timeout
> inserted between <ctrl><alt><bkspc> killing the server and the new X
> server attempting to init video. Does a single head fail similarly?
> 
> With multi-console at least, using this as a stress test will cause a
> crash - either of the X server or a lockup or similar. It is attempting
> to re-init immediately. How might one insert a pause of say 0.5 or 1
> second, to ensure that this is not the whole problem? Is this
> unnecessary?
> 
> Of course it's not a real-world usage and it's not normally a problem,
> but it would be nice to know what causes it and perhaps prevent it
> altogether.
> 
> J
> 
> On Sun, 2005-12-25 at 16:17, Yitzhak Bar Geva wrote: 
> > What version of X are you running?
> > Have you or anybody else have positive experience with
> > Zephyr. I have tried Ander's binary patched Xephyr
> > with your 2.6.14-vz2 kernel and xorg 6.9 and get an
> > I/O error, whereas it works OK for Ander.
> > YBG
> > > Hoho
> > > 
> > > Two new 2.6.14 kernels at
> > > http://members.westnet.com.au/vanzeeland :
> > > 
> > > vz3.3 : 
> > > Built from redhat errata 1.1653 FC4 kernel +
> > > 2.6.14.4 + Faketty 0.04 + Hijack LED + Bluetooth
> > -mh2 +
> > > vesafb-tng-1.0-rc1-r2-2.6.14 + fbsplash +
> > > realtime LSM + shfs + MS PPP and CHAP2
> > > authentication support.
> > > 
> > > vz3.3.1 :
> > > adds Con colivas ck7 patches
> > > 
> > > Good news : with these kernels and nV 7676 or 8xxx
> > > the P4 that I cursed so much in previous discussion
> > is now showing no sign of
> > > text/framebuffer console corruption, or any problem
> > with X and console switching.
> > 
> > 
> > 
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> 
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