[LITMUS^RT] Trace unit ?

Björn Brandenburg bbb at mpi-sws.org
Thu Jun 19 13:43:32 CEST 2014


On 19 Jun 2014, at 13:39, Björn Brandenburg <bbb at mpi-sws.org> wrote:

> 
> On 19 Jun 2014, at 13:09, Sanjib Das <cnt.sanjib at googlemail.com> wrote:
> 
>> Hi,
>> Thank you very much. But, For each experiment with PFAIR scrip returns 3 couples of CSVs and PDFs. Where PDFs are labeled as CXS_task_Avg_Avg, CXS_task_Min_Min, CXS_task_Min_Avg, CXS_task_Var_Avg, CXS_task_Max_Max, CXS_task_Max_Avg, and there is not label on the generated graph . 
>> 
>> Can you please help me in this particulate case  ?
>> 
>> Thanks in advance 
>> Sanjib
>> 
>> 
>> 
>> 
>> On Thu, Jun 19, 2014 at 1:05 PM, Björn Brandenburg <bbb at mpi-sws.org> wrote:
>> 
>> On 19 Jun 2014, at 12:03, Sanjib Das <cnt.sanjib at googlemail.com> wrote:
>> 
>>> 	• RELEASE_LATENCY: Used to measure the difference between when a timer should have fired, and when it actually did fire. In contrast to all other time stamps, this overhead is directly measured in nanoseconds(*********and not in processor cycles as the other overheads********).
>>> 
>>> 
>>> Except RELEASE_LATENCY, are all the others measured in milliseconds ?
>>> 
>>> Or how can I determine that .
>> 
>> See above. Feather-Trace reports processor cycles. 
>> 
> 
> I'm not familiar with the new UNC experiment scripts.

Also, please note that there is a new overhead event for PFAIR in version 2014.2 to trace quantum boundary overheads. I'm not sure whether the scripts need an update to deal with this.

- Björn





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