I am testing on a 2.8ghz pentium 4 single core.  I have other computers 
I can test on also..

sam


On 12/3/2013 10:41 PM, Robert Ellenberg wrote:
> I just found an error I overlooked that may be causing those spikes. I'm
> seeing similar issues with the straight-line case, which I'm also seeing on
> my sherline mill on the straight line example. Hopefully it will be a quick
> fix.
>
> -Rob
>
>
> On Tue, Dec 3, 2013 at 9:08 PM, sam sokolik <[email protected]> wrote:
>
>> I will try that tomorrow.  One thought - there is no following errror -
>> so I motion is doing what the tp is telling it to do...
>>
>> cool.
>>
>> thanks again - I didn't notice that many arcs in the stellabee - but
>> that could be...  I will look for some more line segment programs that
>> are long in length.
>>
>> sam
>> On 12/03/2013 03:20 PM, Robert Ellenberg wrote:
>>> On Dec 3, 2013 2:42 PM, "sam sokolik" <[email protected]> wrote:
>>>> I have not seen the blip..  (but surprisingly I may have found a blip in
>>>> master...)
>>>> Ok - spiral - wow.  Running at almost 400ipm at the largest diameter.
>>>> Damn  impressive.
>>>>
>>>> I am a bit perplexed though..  If I run stellabee1.ngc (
>>>> http://electronicsam.com/images/KandT/testing/stellabee1.ngc ) with
>>>> g64P.005 - it actually runs faster with parabolic blends (master).
>>>> (40min vs 50 minutes about)  I was expecting a 2 fold at least
>>> improvement.
>>>
>>> The reason for that might be the arcs in the program. I reduced the
>>> acceleration of arcs to fix the overage in arc-arc.ngc, but the tradeoff
>> is
>>> lower performance when there is a lot of acceleration and deceleration.
>>>
>>>> While the penguin -  (metric so .1 is about .004")
>>>> parabolic blend  P.1=2:21     Strait G64=4:12
>>>> circular blend      P.1=1:41     Strait G64=2:27
>>>>
>>>> So - I don't know if that is correct - or there is some issue.   Is the
>>>> stellabee file just too wacky for the readahead to help?
>>>>
>>>> I could not run the stellabee file with strait g64 because it fails.  I
>>>> will try to get more info. (large jump in position/acc)
>>>> Ok - I did a halscope with program line as part of it..  With stellabee
>>>> and strait G64 - looks like line 32142.
>>> Could you build the program with my debug flags enabled? It will spit
>> out a
>>> log that will be useful to diagnose what's happening. Run this command:
>>>
>>> make EXTRA_DEBUG = '-DTP_DEBUG -DTC_DEBUG'
>>>
>>> then run Linuxcnc like this:
>>>
>>> linuxcnc > test.log
>>>
>>> This works in simulation mode to dump a log of what's happening in tp.
>> I'd
>>> like to see if these spikes are visible in the planned motion.
>>>
>>> Thanks!
>>> Rob
>>>
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