Rails - Feb 2007 - sleep function duration changes when system clock is modified

My problem is related to the behaviour of sleep function. If, during
the execution of sleep function, I change the system clock of my PC,
sleep function will not recover from sleeping when it should.

Example:

My controller:

def index
  logger.info "Start sleeping at:"+Time.now.to_s
  sleep 5
  logger.info "Sleeping finished at:"+Time.now.to_s
end

Everythink works well if I don''t change the system time during the
execution of sleep function.
However, if during the execution of sleep function I shift the system
time, let''s say 1 minute back, I''ll need to wait 1 minute and
5
seconds until the sleep function finishes.

I''d need to force sleep function to sleep always 5 seconds, even if
the system time changes during the call of the sleep function.

If I try somethink similar in pure ruby (no rails), everythink works
as expected, I can change system time without any consequences to the
behaviour of sleep function.

I am using Rails 1.2.1 under WinXP.

Thanks for your help.


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Jan wrote:
> My problem is related to the behaviour of sleep function. If, during
> the execution of sleep function, I change the system clock of my PC,
> sleep function will not recover from sleeping when it should.
While odd, why is this really a problem?  You shouldnt be manually 
changing the system clock very often.

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The server application will be running on customer''s PC and the sleep
function is used in a background thread. In these conditions, the
manual change of system clock may happen and I would''nt like if this
freezed the background thread.

> While odd, why is this really a problem?  You shouldnt be manually
> changing the system clock very often.

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Bump...I am also experiencing this problem with Fedora Core 6 & 7

http://www.ruby-forum.com/topic/123178#new
http://www.ruby-forum.com/topic/130593#new
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