Re: [ck] Re: Linus 2.6.23-rc1

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Cc: Linus Torvalds <torvalds@...>, jos poortvliet <jos@...>, Michael Chang <thenewme91@...>, Kasper Sandberg <lkml@...>, Linux Kernel Mailing List <linux-kernel@...>
Date: Saturday, July 28, 2007 - 8:03 pm

Interesting... Trying to avoid reading email but with a flooded inbox it's 
quite hard to do.

A lot of useful discussion seems to have generated in response to people's 
_interpretation_ of my interview rather than what I actually said. For 
example, everyone seems to think I quit because CFS was chosen over SD (hint: 
it wasn't). Since it's generating good discussion I'll otherwise leave it as 
is.


As a parting gesture; a couple of hints for CFS. 

Any difference in behaviour between CFS and SD since they both aim for 
fairness would come down to the way they interpret fair. Since CFS accounts 
sleep time whereas SD does not, that would be the reason.

As for volanomark regressions, they're always the sched_yield implementation. 
SD addressed a similar regression a few months back.

Good luck.

-- 
-ck
-
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Messages in current thread:
Linus 2.6.23-rc1, Linus Torvalds, (Sun Jul 22, 5:04 pm)
Re: Linus 2.6.23-rc1, Ronni Nielsen, (Sat Jul 28, 10:52 am)
Re: Linus 2.6.23-rc1, Linus Torvalds, (Sat Jul 28, 1:30 pm)
Re: Linus 2.6.23-rc1, Kasper Sandberg, (Fri Jul 27, 10:04 pm)
Re: Linus 2.6.23-rc1, Ingo Molnar, (Sun Jul 29, 11:04 am)
Re: Linus 2.6.23-rc1, Kasper Sandberg, (Mon Jul 30, 12:13 pm)
Re: Linus 2.6.23-rc1, George Sescher, (Sun Jul 29, 7:04 pm)
Re: Linus 2.6.23-rc1, Ingo Molnar, (Mon Jul 30, 2:44 am)
Re: Linus 2.6.23-rc1, George Sescher, (Mon Jul 30, 3:06 am)
Re: Linus 2.6.23-rc1, Ingo Molnar, (Mon Jul 30, 3:55 am)
Re: Linus 2.6.23-rc1, George Sescher, (Mon Jul 30, 5:26 am)
Re: Linus 2.6.23-rc1, Ingo Molnar, (Mon Jul 30, 6:26 am)
Re: Linus 2.6.23-rc1, Linus Torvalds, (Sun Jul 29, 7:18 pm)
Re: Linus 2.6.23-rc1, Bill Huey, (Tue Jul 31, 6:05 am)
Re: Linus 2.6.23-rc1, Linus Torvalds, (Tue Jul 31, 11:44 am)
Re: Linus 2.6.23-rc1, Ingo Molnar, (Tue Jul 31, 10:04 am)
Re: [ck] Re: Linus 2.6.23-rc1, Matthew Hawkins, (Mon Jul 30, 1:12 am)
Re: Linus 2.6.23-rc1, George Sescher, (Sun Jul 29, 7:38 pm)
Re: Linus 2.6.23-rc1, Linus Torvalds, (Sun Jul 29, 7:58 pm)
Re: Linus 2.6.23-rc1, Linus Torvalds, (Fri Jul 27, 10:35 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Jory A. Pratt, (Sat Jul 28, 5:07 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Michael Chang, (Sat Jul 28, 9:18 am)
Re: [ck] Re: Linus 2.6.23-rc1, Linus Torvalds, (Sat Jul 28, 1:25 pm)
Re: [ck] Re: Linus 2.6.23-rc1, jos poortvliet, (Sat Jul 28, 2:03 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Linus Torvalds, (Sat Jul 28, 2:28 pm)
Re: [ck] Re: Linus 2.6.23-rc1, jos poortvliet, (Sat Jul 28, 3:28 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Linus Torvalds, (Sat Jul 28, 4:31 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Roman Zippel, (Wed Aug 1, 12:17 am)
Re: [ck] Re: Linus 2.6.23-rc1, Carlo Florendo, (Wed Aug 1, 1:46 am)
RE: [ck] Re: Linus 2.6.23-rc1, Hua Zhong, (Wed Aug 1, 2:16 am)
Re: [ck] Re: Linus 2.6.23-rc1, Alan Cox, (Wed Aug 1, 8:31 am)
Re: [ck] Re: Linus 2.6.23-rc1, Carlo Florendo, (Wed Aug 1, 3:09 am)
Re: [ck] Re: Linus 2.6.23-rc1, Con Kolivas, (Sat Jul 28, 8:03 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Charles philip Chan, (Sat Jul 28, 9:23 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Bill Huey, (Sat Jul 28, 4:07 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Diego Calleja, (Sat Jul 28, 5:06 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Daniel Phillips, (Tue Aug 7, 2:55 am)
Re: [ck] Re: Linus 2.6.23-rc1, Alan Cox, (Tue Aug 7, 11:33 am)
Re: [ck] Re: Linus 2.6.23-rc1, Bill Huey, (Sat Jul 28, 5:32 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Linus Torvalds, (Sat Jul 28, 6:18 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Bill Huey, (Sat Jul 28, 9:00 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Diego Calleja, (Sun Jul 29, 10:31 am)
Re: [ck] Re: Linus 2.6.23-rc1, Mike Galbraith, (Sun Jul 29, 4:25 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Bill Huey, (Sun Jul 29, 5:48 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Mike Galbraith, (Mon Jul 30, 1:03 am)
Re: [ck] Re: Linus 2.6.23-rc1, Martin Steigerwald, (Sun Jul 29, 2:31 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Martin Steigerwald, (Sat Jul 28, 6:05 am)
Re: [ck] Re: Linus 2.6.23-rc1, Dirk Schoebel, (Sat Jul 28, 7:06 am)
Re: Linus 2.6.23-rc1, Kasper Sandberg, (Sat Jul 28, 5:44 am)
Re: Linus 2.6.23-rc1, Linus Torvalds, (Sat Jul 28, 1:50 pm)
Re: Linus 2.6.23-rc1, Jan Engelhardt, (Sat Jul 28, 3:13 pm)
Re: Linus 2.6.23-rc1, Linus Torvalds, (Sat Jul 28, 3:34 pm)
Re: Linus 2.6.23-rc1, Jan Engelhardt, (Wed Aug 1, 5:21 am)
Re: Linus 2.6.23-rc1, Linus Torvalds, (Sat Jul 28, 5:33 pm)
Re: Linus 2.6.23-rc1, Jan Engelhardt, (Sat Jul 28, 5:55 pm)
Re: Linus 2.6.23-rc1, Linus Torvalds, (Sat Jul 28, 6:22 pm)
Re: Linus 2.6.23-rc1, Kasper Sandberg, (Sat Jul 28, 2:07 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Matthew Hawkins, (Sat Jul 28, 3:36 am)
Re: [ck] Re: Linus 2.6.23-rc1, Martin Steigerwald, (Sat Jul 28, 6:40 am)
Reporting bugs (was Re: [ck] Re: Linus 2.6.23-rc1), Stefan Richter, (Sat Jul 28, 12:10 pm)
Re: Reporting bugs (was Re: [ck] Re: Linus 2.6.23-rc1), Michal Piotrowski, (Sat Jul 28, 12:21 pm)
Re: [ck] Re: Linus 2.6.23-rc1, Grzegorz Kulewski, (Sat Jul 28, 3:09 am)
SD still better than CFS for 3d , Kasper Sandberg, (Fri Jul 27, 7:43 am)
Re: SD still better than CFS for 3d ?(was Re: 2.6.23-rc1), Kasper Sandberg, (Mon Jul 30, 7:46 pm)
Re: SD still better than CFS for 3d ?(was Re: 2.6.23-rc1), Peter Zijlstra, (Tue Jul 31, 2:31 am)
Re: SD still better than CFS for 3d ?(was Re: 2.6.23-rc1), J. Bruce Fields, (Thu Aug 2, 9:03 am)
Re: SD still better than CFS for 3d ?(was Re: 2.6.23-rc1), Trond Myklebust, (Thu Aug 2, 9:39 am)
Re: SD still better than CFS for 3d ?(was Re: 2.6.23-rc1), Kasper Sandberg, (Wed Aug 1, 7:43 pm)
Re: SD still better than CFS for 3d ?(was Re: 2.6.23-rc1), Kasper Sandberg, (Wed Aug 8, 10:38 am)
2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Alexey Dobriyan, (Mon Jul 23, 2:38 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Alexey Dobriyan, (Mon Jul 23, 3:01 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Andrew Morton, (Mon Jul 23, 4:24 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Mike Galbraith, (Tue Jul 24, 6:01 am)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Andrew Morton, (Tue Jul 24, 12:28 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Linus Torvalds, (Tue Jul 24, 2:25 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Mike Galbraith, (Wed Jul 25, 1:09 am)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Alexey Dobriyan, (Tue Jul 24, 4:05 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Cyrill Gorcunov, (Wed Jul 25, 1:44 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Mike Galbraith, (Tue Jul 24, 6:37 am)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Alexey Dobriyan, (Mon Jul 23, 4:40 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Alexey Dobriyan, (Mon Jul 23, 5:01 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Andrew Morton, (Mon Jul 23, 5:11 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Alexey Dobriyan, (Mon Jul 23, 6:04 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Andrew Morton, (Mon Jul 23, 6:27 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Jens Axboe, (Tue Jul 24, 4:17 am)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Jens Axboe, (Tue Jul 24, 4:22 am)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Dan Williams, (Tue Jul 24, 9:55 am)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Andrew Morton, (Tue Jul 24, 4:34 am)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Dan Williams, (Tue Jul 24, 10:00 am)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Alexey Dobriyan, (Tue Jul 24, 1:20 am)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Linus Torvalds, (Mon Jul 23, 5:28 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Adrian Bunk, (Tue Jul 24, 1:59 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Linus Torvalds, (Tue Jul 24, 2:14 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Andrew Morton, (Tue Jul 24, 2:28 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Linus Torvalds, (Tue Jul 24, 3:15 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Adrian Bunk, (Tue Jul 24, 3:40 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Linus Torvalds, (Tue Jul 24, 3:48 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Adrian Bunk, (Thu Jul 26, 2:07 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Linus Torvalds, (Thu Jul 26, 2:19 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Andi Kleen, (Tue Jul 24, 4:27 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Linus Torvalds, (Tue Jul 24, 3:45 pm)
Re: 2.6.23-rc1: BUG_ON in kmap_atomic_prot(), Sam Ravnborg, (Mon Jul 23, 5:37 pm)
Re: Linus 2.6.23-rc1, Gabriel C, (Mon Jul 23, 12:43 pm)
Re: Linus 2.6.23-rc1, Ismail , (Mon Jul 23, 12:57 pm)
Re: Linus 2.6.23-rc1, Alessandro Suardi, (Mon Jul 23, 4:44 pm)
Re: Linus 2.6.23-rc1, Len Brown, (Tue Jul 24, 10:49 am)
Re: Linus 2.6.23-rc1, xen fix, Ingo Molnar, (Mon Jul 23, 11:52 am)
Re: Linus 2.6.23-rc1: ACPI-related oops on x86_64, Mel Gorman, (Mon Jul 23, 5:50 am)
Re: Linus 2.6.23-rc1: ACPI-related oops on x86_64, Len Brown, (Mon Jul 23, 1:15 pm)
Re: Linus 2.6.23-rc1: ACPI-related oops on x86_64, Mel Gorman, (Tue Jul 24, 6:37 am)
Re: Linus 2.6.23-rc1, Gabriel C, (Sun Jul 22, 10:48 pm)
Re: Linus 2.6.23-rc1, Gabriel C, (Sun Jul 22, 9:20 pm)
Re: Linus 2.6.23-rc1, Paul Mundt, (Sun Jul 22, 9:23 pm)
Re: Linus 2.6.23-rc1, Greg KH, (Mon Jul 23, 12:11 am)
Re: Linus 2.6.23-rc1, Gabriel C, (Sun Jul 22, 9:27 pm)
Re: Linus 2.6.23-rc1, Paul Mundt, (Sun Jul 22, 9:40 pm)
Re: Linus 2.6.23-rc1, Alistair John Strachan, (Sun Jul 22, 7:33 pm)
Re: Linus 2.6.23-rc1, Roland McGrath, (Sun Jul 22, 7:51 pm)
Re: Linus 2.6.23-rc1, Adrian Bunk, (Sun Jul 22, 8:07 pm)
Re: Linus 2.6.23-rc1, Roland McGrath, (Sun Jul 22, 8:31 pm)
Re: Linus 2.6.23-rc1, Adrian Bunk, (Sun Jul 22, 9:43 pm)
Re: Linus 2.6.23-rc1, Andre Noll, (Sun Jul 22, 6:10 pm)
Re: Linus 2.6.23-rc1, Andi Kleen, (Sun Jul 22, 6:22 pm)
Re: Linus 2.6.23-rc1, Andre Noll, (Sun Jul 22, 7:23 pm)
Re: Linus 2.6.23-rc1, Andi Kleen, (Sun Jul 22, 7:31 pm)
Re: Linus 2.6.23-rc1, Jakub Jelinek, (Mon Jul 23, 2:07 am)