lkml.org 
[lkml]   [2005]   [May]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: RT patch acceptance
    Ingo Molnar wrote:
    > * Nick Piggin <nickpiggin@yahoo.com.au> wrote:
    >
    >
    >>Of course this is weighed off against the improvements added to the
    >>kernel. I'm personally not too clear on what those improvements are; a
    >>bit better soft-realtime response? (I don't know) [...]
    >
    >
    > what the -RT kernel (PREEMPT_RT) offers are guaranteed hard-realtime
    > responses. ~15 usecs worst-case latency on a 2GHz Athlon64. On arbitrary
    > (SCHED_OTHER) workloads. (I.e. i've measured such worst-case latencies
    > when running 1000 hackbench tasks or when swapping the box to death, or
    > when running 40 parallel copies of the LTP testsuite.)
    >

    Oh OK, I didn't realise it is aiming for hard RT. Cool! but
    that wasn't so much the main point I was trying to make...

    > so it's well worth the effort, but there's no hurry and all the changes
    > are incremental anyway. I can understand Daniel's desire for more action
    > (he's got a product to worry about), but upstream isnt ready for this
    > yet.
    >

    Basically the same questions I think will still be up for debate.
    Not that I want to start now, nor do I really have any feelings
    on the matter yet (other than I'm glad you're not in a hurry :)).

    For example, it may not be clear to everyone that it is
    automatically well worth the effort ;) And others may really
    want the functionality but prefer it to be done in a specialised
    software like Christoph said.

    Nick


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

    \
     
     \ /
      Last update: 2005-05-24 10:40    [W:4.148 / U:0.288 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site