Linked by David Adams on Tue 16th Aug 2011 16:44 UTC, submitted by Michael
This month marks the two-year anniversary of the release of BFS, the Brain Fuck Scheduler, for the Linux kernel. While BFS has not been merged into the mainline Linux kernel, the scheduler is still actively maintained by Con Kolivas and patches are updated for new kernel releases. The BFS scheduler has also reached mild success and adoption over the past two years. In this article is a fresh look at the Brain Fuck Scheduler along with a fresh round of benchmarks from the Linux 3.0 kernel.
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Member since:
2009-12-05
You don`t really need this patch anymore. I can get 0.33ms latency with the regual kernel, with a good config. But it still outperforms the regular kernel, according to Con Kolivas benchmarks, so if you want the absolutely lowest latency, go for it.
Seems to perform at bit better aswell in other areas, according to this article !
Edited 2011-08-16 17:14 UTC
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2011-08-11
RE: Comment by graudeejs
by Neolander on Tue 16th Aug 2011 18:04 UTC
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RE[2]: Comment by graudeejs
by Laurence on Tue 16th Aug 2011 19:10 UTC
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RE[3]: Comment by graudeejs
by Neolander on Tue 16th Aug 2011 20:09 UTC
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RE[4]: Comment by graudeejs
by Laurence on Wed 17th Aug 2011 08:41 UTC
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Member since:2007-03-26
Member since:
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Member since:
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It is somewhat weird Linux doesn't ship with a set of schedulers to choose from since there is no scheduler suited for every possible workload. I think it might be a maintenance issue but I feel this could be an opportunity for some sort of plugin system for the kernel similar to drivers. There might be other areas as well like memory management where it could benefit.
RE: Comment by abstraction
by renox on Wed 17th Aug 2011 08:30 UTC
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Member since:2005-07-06
It is somewhat weird Linux doesn't ship with a set of schedulers to choose from since there is no scheduler suited for every possible workload. I think it might be a maintenance issue
No, it's not (mainly) a maintenance issue, it's a policy choice: Linus wants to have a good "all-purpose" scheduler, not several special-purpose schedulers.. Of course, not everybody agree with him as shown by CK's BFS. Note that even if you don't use BFS, its existence had a nice side effect: it improved Linux, as it helped find a bug in the stock scheduler.