the old 'Unknown HZ value' bug

the old 'Unknown HZ value' bug

[Leszek Koltunski]

I keep getting the bug at random times. My googling resulted in a bunch of 
posts claiming that the problem is related to SMP systems and possibly to 
uptime. But not in my case- I do not have a SMP system and I sometimes get 
the bug right after bootup. SMP support is turned off, as you can see in 
my config:

www.3miasto.net/~leszek/config.html

I was getting it with 2.4.17, 2.4.24, and every single 2.6.x .
( I haven't tested other 2.4.x's )

Leszek

Re: the old 'Unknown HZ value' bug

[Marcelo Tosatti]

On Thu, Jul 08, 2004 at 02:57:04AM +0200, Leszek Koltunski wrote:
> 
> I keep getting the bug at random times. My googling resulted in a bunch of 
> posts claiming that the problem is related to SMP systems and possibly to 
> uptime. But not in my case- I do not have a SMP system and I sometimes get 
> the bug right after bootup. SMP support is turned off, as you can see in 
> my config:
> 
> www.3miasto.net/~leszek/config.html
> 
> I was getting it with 2.4.17, 2.4.24, and every single 2.6.x .
> ( I haven't tested other 2.4.x's )

Leszek, 

Can you please your problem in more detail?

Re: the old 'Unknown HZ value' bug

[Herbert Poetzl]

On Thu, Jul 08, 2004 at 11:45:06AM -0300, Marcelo Tosatti wrote:
> On Thu, Jul 08, 2004 at 02:57:04AM +0200, Leszek Koltunski wrote:
> > 
> > I keep getting the bug at random times. My googling resulted in a bunch of 
> > posts claiming that the problem is related to SMP systems and possibly to 
> > uptime. But not in my case- I do not have a SMP system and I sometimes get 
> > the bug right after bootup. SMP support is turned off, as you can see in 
> > my config:
> > 
> > www.3miasto.net/~leszek/config.html
> > 
> > I was getting it with 2.4.17, 2.4.24, and every single 2.6.x .
> > ( I haven't tested other 2.4.x's )

sounds like broken tools trying to figure the
HZ value from /proc/interrupts and uptime ...

this tends to give exceptionally wrong values,
especially shortly after system start (small
number of timer interrupts so far)

best,
Herbert

> Leszek, 
> 
> Can you please your problem in more detail?
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