[vdr] Re: dvb threatening file system? [was Drop support for multiple video dirs?]

[Guido Fiala <gfiala@s.netic.de>]

Am Dienstag, 7. Oktober 2003 09:23 schrieben Sie:
> But I never had any corrupt linux file systems in a row of computers,
> only  in vdr, so Emils mail made me think.
> And there have been bugs with DMA transfer in the driver.
>
> Are there others with such problems?

Yes, i had some corruptions as well. I think it is related with bad hardware 
in general...

The problem is, that usually the cpu and all other components are only tested 
for a few minutes to run properly and not under all conditions. Vdr is 
putting some stress on the system...

I mean - i put my new system under really big stress these days by running 
lots of things in parallel (gentoo emerges, webbrowser, scanner, sound) and 
got it crashed after some hours. Before that the compiler started to make 
failures (it exited with segfaults). The latter are known for such problems, 
especially if the compiler fails never at the same place. Other applications 
did'nt show a slight sign that there might be something wrong, so it's quite 
likely to overlook such problems.

Traced it down to the memory chips - they are PC133 but they do not run 
properly at 133MHz (i tried single and double-sided ones and i heard Infineon 
are good ones), sooner or later they fail. If that happens during some 
file-system-action it's likely to create serious damage...

It seems that todays hardware is running to close to the limits - my mainboard 
allows me to set the frequency in MHz steps, so i reduced it by 3 MHz (130 
instead of 133) and anything is rock-solid.



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