Re: One-shot high-resolution POSIX timer periodically late

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Peter Zijlstra wrote:

John wrote:

Ingo Molnar wrote:

John wrote:

John Stultz wrote:

Also do check the -rt tree as Ingo suggested. I mis-read your earlier
email and thought you were running it.

I've been pulling my hair over a related issue for the past two days.

(I think I may be tickling a -hrt bug...)

I'm working with 2.6.18.6 + patch-2.6.18-rt7

2.6.18-rt7 is pretty old, do you see the problem in 2.6.20-rc6-rt5 too?

Ingo, Thomas,

As far as I can tell, the -rt patch set is only updated for the latest kernel version available. Is that correct?

http://people.redhat.com/mingo/realtime-preempt/older/?M=D

In other words, once 2.6.20 is released, and work starts on 2.6.21, if a bug is discovered in -rt, the fix will not be back-ported to the 2.6.20.x (and 2.6.19.x, and 2.6.18.x, etc) patch set?

Correct, there is only 1 live branch.

Are there people that use the -rt patch set in real industrial applications?

It seems that, if an important bug is found in the -rt part, I will have to either upgrade to the latest kernel, or back port all the -rt changes to the kernel I chose for my application?

Regards,

John

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