linux-kernel - [ANNOUNCE] BFS CPU scheduler v0.450 with SMT nice support for linux-3.16

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2233658.OcMy7hG7Vc@hex>
Date:	Sat, 16 Aug 2014 15:40:13 +1000
From:	Con Kolivas <kernel@...ivas.org>
To:	linux-kernel@...r.kernel.org
Subject: [ANNOUNCE] BFS CPU scheduler v0.450 with SMT nice support for linux-3.16

This is to announce a resync and  update of the Brain Fuck Scheduler, 
version 0.450 for the latest stable linux kernel.

In addition to the usual round of fixes and changes to resync with mainline 
changes, this release brings a new feature of configurable SMT nice support.

The configuration help follows to explain:

Enabling Hyperthreading on Intel CPUs decreases the effectiveness                                                                                   
of the use of 'nice' levels and different scheduling policies                                                                                       
(e.g. realtime) due to sharing of CPU power between hyperthreads.                                                                                   
SMT nice support makes each logical CPU aware of what is running on                                                                                 
its hyperthread siblings, maintaining appropriate distribution of                                                                                   
CPU according to nice levels and scheduling policies at the expense                                                                                 
of slightly increased overhead.      

This code is based on my original idea from ten years ago discussed here:
http://lwn.net/Articles/73614/

A full discussion of the rationale and development follows here:
http://ck-hack.blogspot.com/2014/08/smthyperthreading-nice-and-scheduling.html

The patch against linux-3.16(.x) is available here:
http://ck.kolivas.org/patches/bfs/3.0/3.16/3.16-sched-bfs-450.patch

A -ck branded linux-3.16-ck1 patch is available here:
http://ck.kolivas.org/patches/3.0/3.16/3.16-ck1/

All patches available here:
http://ck.kolivas.org/patches

Code blog:
http://ck-hack.blogspot.com

Enjoy!
お楽しみください

-- 
-ck

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/