Re: [PATCH 2 of 4] Introduce i386 fibril scheduling

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To: Ingo Molnar <mingo@...>
Cc: Christoph Hellwig <hch@...>, Zach Brown <zach.brown@...>, <linux-kernel@...>, <linux-aio@...>, Suparna Bhattacharya <suparna@...>, Benjamin LaHaise <bcrl@...>, Linus Torvalds <torvalds@...>
Date: Thursday, February 1, 2007 - 1:13 pm

Ingo Molnar wrote:

Ingo, how relevant is that "350 nsecs on current hardware" claim?

I don't mean that in a bad way, but my own experience suggests that
most people doing real hard RT (or tight soft RT) are not doing it
on x86 architectures.  But rather on lowly 1GHz (or less) ARM based
processors and the like.

For RT issues, those are the platforms I care more about,
as those are the ones that get embedded into real-time devices.

??

Cheers
-
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Messages in current thread:
[PATCH 0 of 4] Generic AIO by scheduling stacks, Zach Brown, (Tue Jan 30, 4:39 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Linus Torvalds, (Fri Feb 9, 6:33 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, David Miller, (Sat Feb 10, 8:56 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Linus Torvalds, (Sat Feb 10, 10:49 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, bert hubert, (Sat Feb 10, 6:47 am)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Davide Libenzi, (Sat Feb 10, 2:19 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Eric Dumazet, (Fri Feb 9, 8:04 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Linus Torvalds, (Fri Feb 9, 8:12 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Davide Libenzi, (Fri Feb 9, 7:11 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Linus Torvalds, (Fri Feb 9, 7:35 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Davide Libenzi, (Sat Feb 10, 2:45 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Linus Torvalds, (Sat Feb 10, 3:01 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Davide Libenzi, (Sat Feb 10, 4:59 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Linus Torvalds, (Sat Feb 10, 3:35 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Davide Libenzi, (Sun Feb 4, 1:13 am)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Davide Libenzi, (Sun Feb 4, 4:00 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Benjamin Herrenschmidt, (Tue Jan 30, 10:04 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Zach Brown, (Wed Jan 31, 1:38 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Benjamin LaHaise, (Wed Jan 31, 1:51 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Zach Brown, (Wed Jan 31, 3:25 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Benjamin LaHaise, (Wed Jan 31, 4:05 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Zach Brown, (Wed Jan 31, 4:41 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Linus Torvalds, (Tue Jan 30, 10:46 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Zach Brown, (Wed Jan 31, 1:47 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Nick Piggin, (Wed Jan 31, 1:36 am)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Zach Brown, (Wed Jan 31, 2:20 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Linus Torvalds, (Wed Jan 31, 2:06 am)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Joel Becker, (Wed Jan 31, 4:13 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Ingo Molnar, (Wed Jan 31, 4:43 am)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Nick Piggin, (Wed Jan 31, 1:51 am)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Benjamin Herrenschmidt, (Wed Jan 31, 1:16 am)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Linus Torvalds, (Tue Jan 30, 11:02 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Zach Brown, (Wed Jan 31, 1:59 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Xavier Bestel, (Wed Jan 31, 6:50 am)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Zach Brown, (Wed Jan 31, 3:28 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Linus Torvalds, (Tue Jan 30, 5:58 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Zach Brown, (Tue Jan 30, 6:40 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Linus Torvalds, (Tue Jan 30, 6:53 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Zach Brown, (Tue Jan 30, 7:45 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Benjamin Herrenschmidt, (Tue Jan 30, 10:07 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Linus Torvalds, (Tue Jan 30, 6:23 pm)
Re: [PATCH 0 of 4] Generic AIO by scheduling stacks, Zach Brown, (Tue Jan 30, 6:53 pm)
Re: [PATCH 4 of 4] Introduce aio system call submission and ..., Suparna Bhattacharya, (Thu Feb 1, 7:13 am)
Re: [PATCH 4 of 4] Introduce aio system call submission and ..., Suparna Bhattacharya, (Thu Feb 1, 11:35 pm)
Re: [PATCH 4 of 4] Introduce aio system call submission and ..., Suparna Bhattacharya, (Fri Feb 2, 3:19 am)
[PATCH 2 of 4] Introduce i386 fibril scheduling, Zach Brown, (Tue Jan 30, 4:39 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Sun Feb 4, 1:12 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Zach Brown, (Mon Feb 5, 1:54 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Ingo Molnar, (Thu Feb 1, 4:36 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Thu Feb 1, 4:07 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Ingo Molnar, (Fri Feb 2, 6:49 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Fri Feb 2, 11:56 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Ingo Molnar, (Fri Feb 2, 6:21 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Zach Brown, (Mon Feb 5, 1:02 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Mon Feb 5, 2:52 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Zach Brown, (Mon Feb 5, 3:20 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Mon Feb 5, 3:38 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Fri Feb 2, 7:37 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, bert hubert, (Mon Feb 5, 5:36 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Mon Feb 5, 5:57 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Scot McKinley, (Mon Feb 5, 8:27 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Joel Becker, (Mon Feb 5, 8:48 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, David Miller, (Mon Feb 5, 8:48 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Mon Feb 5, 6:34 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, bert hubert, (Mon Feb 5, 6:07 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Zach Brown, (Mon Feb 5, 6:15 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Zach Brown, (Mon Feb 5, 1:12 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Mon Feb 5, 2:24 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, David Miller, (Mon Feb 5, 5:44 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Mon Feb 5, 8:15 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Fri Feb 2, 8:02 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Fri Feb 2, 6:49 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Ingo Molnar, (Fri Feb 2, 7:55 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Fri Feb 2, 8:56 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Ingo Molnar, (Sat Feb 3, 4:23 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Zach Brown, (Mon Feb 5, 1:44 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Mon Feb 5, 3:26 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Zach Brown, (Mon Feb 5, 3:41 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Mon Feb 5, 4:10 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Mon Feb 5, 4:39 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Zach Brown, (Mon Feb 5, 5:21 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Mon Feb 5, 5:09 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Mon Feb 5, 8:32 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Kent Overstreet, (Mon Feb 5, 5:31 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Tue Feb 6, 4:46 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Kent Overstreet, (Tue Feb 6, 6:45 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Tue Feb 6, 7:23 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Joel Becker, (Tue Feb 6, 7:39 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Tue Feb 6, 7:56 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Joel Becker, (Tue Feb 6, 8:06 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Tue Feb 6, 8:23 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Joel Becker, (Tue Feb 6, 8:44 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Michael K. Edwards, (Wed Feb 7, 2:16 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Michael K. Edwards, (Wed Feb 7, 5:17 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Michael K. Edwards, (Wed Feb 7, 5:37 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Tue Feb 6, 9:15 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Joel Becker, (Tue Feb 6, 9:30 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Kent Overstreet, (Tue Feb 6, 9:24 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Tue Feb 6, 7:04 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Kent Overstreet, (Tue Feb 6, 9:22 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, David Miller, (Tue Feb 6, 5:16 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Tue Feb 6, 5:28 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, David Miller, (Tue Feb 6, 5:31 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Tue Feb 6, 5:50 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Zach Brown, (Tue Feb 6, 6:28 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Eric Dumazet, (Tue Feb 6, 5:46 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Tue Feb 6, 4:25 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Zach Brown, (Mon Feb 5, 4:21 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Mon Feb 5, 4:42 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Matt Mackall, (Sat Feb 3, 5:25 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Ingo Molnar, (Sat Feb 3, 6:03 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Suparna Bhattacharya, (Sat Feb 3, 3:15 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Zach Brown, (Mon Feb 5, 12:44 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Fri Feb 2, 4:14 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Fri Feb 2, 5:30 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Ingo Molnar, (Fri Feb 2, 6:42 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Fri Feb 2, 7:01 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Fri Feb 2, 7:17 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, bert hubert, (Fri Feb 2, 8:23 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Davide Libenzi, (Fri Feb 2, 4:58 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Linus Torvalds, (Fri Feb 2, 5:09 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Ingo Molnar, (Thu Feb 1, 9:02 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Andi Kleen, (Fri Feb 2, 9:22 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Zach Brown, (Thu Feb 1, 5:52 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Benjamin LaHaise, (Thu Feb 1, 6:23 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Zach Brown, (Thu Feb 1, 6:37 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Christoph Hellwig, (Thu Feb 1, 9:19 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Andi Kleen, (Fri Feb 2, 9:23 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Ingo Molnar, (Thu Feb 1, 9:52 am)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Mark Lord, (Thu Feb 1, 1:13 pm)
Re: [PATCH 2 of 4] Introduce i386 fibril scheduling, Ingo Molnar, (Thu Feb 1, 2:02 pm)
[PATCH 1 of 4] Introduce per_call_chain(), Zach Brown, (Tue Jan 30, 4:39 pm)