[concurrency-interest] For those of us who bench on Linux

David Holmes davidcholmes at aapt.net.au
Wed Apr 27 04:50:54 EDT 2016


Very interesting. In particular that scheduling affinity (to take advantage of a warm cache) can be a performance hit.

 

Thanks for the link.

 

David

 

From: concurrency-interest-bounces at cs.oswego.edu [mailto:concurrency-interest-bounces at cs.oswego.edu] On Behalf Of Viktor Klang
Sent: Wednesday, April 27, 2016 5:24 PM
To: concurrency-interest <concurrency-interest at cs.oswego.edu>
Subject: [concurrency-interest] For those of us who bench on Linux

 

TL;DR: problems found and fixed with Linux scheduler affecting multicore systems.

Story & paper: https://blog.acolyer.org/2016/04/26/the-linux-scheduler-a-decade-of-wasted-cores/

Code: https://github.com/jplozi/wastedcores

Would love to hear your thoughts.

-- 
Cheers,
√

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