In article <[email protected]>,
John Kasunich <[email protected]> wrote:
>EBo wrote:
>
>> In the first run either the configuration program or the latency tests. The
>> test writes out the header block and just sits there. I mean it does not
>> appear to run the thread at all.
>
>The RTAI test is supposed to print one line of results every second. If
>you start that test and don't see output like that, something is
>seriously borked with your realtime setup... I don't even know where to
>suggest you look - I've never encountered such symptoms.
That does sound very very broken, just a thought, has the kernel been
compiled 'tickless'?
config NO_HZ
bool "Tickless System (Dynamic Ticks)"
help
This option enables a tickless system: timer interrupts will
only trigger on an as-needed basis both when the system is
busy and when the system is idle.
If the(linux) kernel is turning off clock interupts when it doesn't
need them (when its idle) you could get the symptoms you are seeing.
Tim
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