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Re: [Discuss-gnuradio] Scheduler Issues with Branch Prediction
From: |
Johnathan Corgan |
Subject: |
Re: [Discuss-gnuradio] Scheduler Issues with Branch Prediction |
Date: |
Wed, 17 Jul 2013 10:28:24 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130623 Thunderbird/17.0.7 |
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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- [Discuss-gnuradio] Scheduler Issues with Branch Prediction, Ron Sadlier, 2013/07/15
- Re: [Discuss-gnuradio] Scheduler Issues with Branch Prediction, Tom Rondeau, 2013/07/17
- Re: [Discuss-gnuradio] Scheduler Issues with Branch Prediction, Marcus Leech, 2013/07/17
- Re: [Discuss-gnuradio] Scheduler Issues with Branch Prediction,
Johnathan Corgan <=
- Re: [Discuss-gnuradio] Scheduler Issues with Branch Prediction, Marcus Leech, 2013/07/17
- Re: [Discuss-gnuradio] Scheduler Issues with Branch Prediction, Ron Sadlier, 2013/07/17
- Re: [Discuss-gnuradio] Scheduler Issues with Branch Prediction, Johnathan Corgan, 2013/07/17
- Re: [Discuss-gnuradio] Scheduler Issues with Branch Prediction, Ron Sadlier, 2013/07/17
- Re: [Discuss-gnuradio] Scheduler Issues with Branch Prediction, Johnathan Corgan, 2013/07/17
- Re: [Discuss-gnuradio] Scheduler Issues with Branch Prediction, Ron Sadlier, 2013/07/17