Re: [Xenomai-help] Negative Latency results

[Peter Puchwein <peter.puchwein@domain.hid>]

Gilles Chanteperdrix wrote:
> Peter Puchwein wrote:
>> Hi,
>>
>> what does a negative latency in the latency-test mean?
>>
>> RTH|-----lat min|-----lat avg|-----lat max|-overrun|----lat best|---lat
>> worst
>> RTD|     -56.443|     -54.519|     -33.519|       0|     -57.020|
>> -28.208
> 

Hi Gilles,

> It means that the timer handler ticked before the date it was supposed
> to tick. This may have several causes:
> - /proc/xenomai/latency is too high, adjust it

where can the latency be configured?

> - hardware things stop the hardware counter used for timing, or slow it
> down, such as cpufreq, acpi_processor or even the bios on x86.

we've checked all config settings due to ACPI and they seem to be ok.

We can live with this small negative latency, are there any known 
negative effects of the negative latency or can we just leave it.

Thanks again,
Peter