So, I turned off USB legacy support and some APM features that were enabled
and I believe the problem is alleviated.
Thanks so much guys,
~Peter
On Tue, Sep 30, 2008 at 8:38 AM, Emory Smith <[EMAIL PROTECTED]> wrote:
> This might not be of any help to you but my home machine - an IBM E Series
> X Server 205
> is unusable for EMC because of the RTAI delay problems. I only run in Sim
> mode at home
> (duh!) but put up with and ignore the errors just to see how a job will
> run.
> Running the latency test on this machine shows well over 1,000,000 (count
> the zeros).
> I think I've checked all the usual bios things to no avail. I will re-check
> all those settings
> and post back the results. This machine runs great for all other software
> and I've never
> noticed any glitches in day to day things I do. Some motherboards just
> don't seem to be
> suited for rtai.
>
> -- Emory
>
>
> On Sat, Sep 27, 2008 at 20:06, Peter Boyer <[EMAIL PROTECTED]>wrote:
>
>> Hi all,
>>
>> This is a first time posting so excuse my newbie-like characteristics. I
>> just finished building a CNC router and am using EMC2 to control it on a
>> Hardy Heron install. My computer is a P4 1.8Ghz Desktop, Matrox Video Card,
>> with 512 MB ram. Presumably, I have an intel chipset.
>>
>> On my first occasion running the software on my router, I got the dreaded
>> "Unexpected realtime delay; check dmesg for details" error. I ran the "RTAI
>> latency calibration tool" and observed the kind of 64 second periodic ~150
>> ms increases increases in latency typical of an SMI (System Mangement
>> Interrupt) issue. After finding an article on the EMC2 wiki directly
>> relating to turning off SMI, I felt very happy and proceeded to implement
>> the solution.
>>
>> I "implemented the solution" by opening rtapi.conf and editing the file
>> exactly as detailed in the wiki article called "Fixing Realtime problems
>> caused by SMI on Ubuntu." I was somewhat confused by the article when it
>> told me to skip to step 6, which instructs the user to copy the rtai_smi.ko
>> module to the appropriate directory - as I understand it, I didn't need to
>> do this on a Hardy Heron install as the module is already present. After
>> installing the module, I ran EMC2 and gave the system a lsmod and saw that
>> the rtapi_smi.ko was running as expected.
>>
>> HOWEVER, I still have (seemingly) the same latency issues as I had
>> before. I still get the "Unexpected realtime delay; check dmesg for
>> details" error.
>>
>> SO, my questions are:
>>
>> 1) Is there some other similar form of latency that would cause this same
>> problem?
>> 2) Might I need to actually compile another rtapi_smi.ko module in order
>> to fix the problem?
>> 3) I did just do something flat out wrong when I tried to fix the
>> problem?
>> 4) What is ACPI and APM? (I have not attempted to turn it off yet.)
>>
>> I'm pretty frustrated and don't really know where to turn. Any ideas?
>>
>> All the best,
>> Peter
>>
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