Re: [Discuss-gnuradio] Scheduler Issues with Branch Prediction

[Johnathan Corgan]

On 07/17/2013 10:12 AM, Marcus Leech wrote:

> Indeed, if branch-prediction misses in the CPU caused actual visible
> effects to data integrity, thousands and thousands of bits of
> software would be negatively impacted, not just Gnu Radio and not 
> just multi-threaded applications.

I suspect the change in behavior observed by the original poster is
caused by a race condition that manifests itself differently depending
on the relative speed of different flowgraph threads, to which branch
prediction failure rate would contribute.

At least that is where I would start debugging efforts.

-- 
Johnathan Corgan
Corgan Labs - SDR Training and Development Services
http://corganlabs.com

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