Microkernel?

By: Linus Torvalds (torvalds.delete@this.linux-foundation.org), March 17, 2021 11:59 am
Room: Moderated Discussions
dmcq (dmcq.delete@this.fano.co.uk) on March 17, 2021 11:15 am wrote:
>
> So the question becomes - can the performance of IPC be dramatically improved?

The answer is simple: "no".

It's just fundamentally more expensive to send some kind of message than it is to just share the data structures and use the cache coherency.

The only way "IPC" is competitive is if you define IPC as "memory mapping your data structures in shared memory".

We call that "monolithic kernel" exactly because it shares that data address space.

In other words, your whole argument hinges on unreality. In a world that doesn't exist, and no reasonable person expects to exist or even has a realistic plan for, in any kind of reasonable timeframe, your argument simply makes absolutely zero sense at all.

Please make a distinction between reality and your dream world, and just admit it, and stop making arguments that make no sense in other peoples realities, ok?

The name of the forum is "real world tech". Not "my private fantasy tech".

Linus
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TopicPosted ByDate
x86 - why unite when you can fragment?anonymou52021/03/12 06:16 PM
  x86 - why unite when you can fragment?Linus Torvalds2021/03/13 01:18 PM
    x86 - why unite when you can fragment?Jon Masters2021/03/13 07:25 PM
      x86 - why unite when you can fragment?Jon Masters2021/03/13 07:44 PM
        x86 - why unite when you can fragment?Yuhong Bao2021/03/13 08:49 PM
        x86 - why unite when you can fragment?tt2021/03/20 09:30 AM
    x86 - why unite when you can fragment?Andrey2021/03/14 04:15 PM
      x86 - why unite when you can fragment?Linus Torvalds2021/03/14 04:58 PM
        x86 - why unite when you can fragment?anonymou52021/03/14 05:31 PM
          x86 - why unite when you can fragment?anon22021/03/14 08:07 PM
        Microkernel?Anon2021/03/14 11:49 PM
          Microkernel?none2021/03/15 12:37 AM
            Microkernel?Anon2021/03/15 01:56 AM
          Microkernel?anon22021/03/15 01:58 AM
            Microkernel?Simon Farnsworth2021/03/15 03:12 AM
              Microkernel?anon22021/03/15 04:53 AM
                Microkernel?Simon Farnsworth2021/03/15 06:56 AM
                  Microkernel?iz2021/03/15 08:10 AM
                    Microkernel?Anon2021/03/15 09:05 AM
                      Microkernel?iz2021/03/16 01:25 AM
                        Microkernel?Andrey2021/03/16 02:54 AM
                          Microkernel?iz2021/03/16 08:36 AM
                            Microkernel?Andrey2021/03/16 10:06 AM
                              Microkernel?anonymou52021/03/16 11:44 AM
                              Microkernel?iz2021/03/21 02:58 AM
                                Microkernel?Andrey2021/03/21 09:34 AM
                  Microkernel?anon22021/03/15 08:31 AM
                    Microkernel?Simon Farnsworth2021/03/16 04:42 AM
            Microkernel?Gabriele Svelto2021/03/15 03:21 AM
              Microkernel?anon22021/03/15 04:56 AM
                Microkernel?Gabriele Svelto2021/03/15 10:41 AM
                  Microkernel?anon22021/03/15 08:00 PM
                    Microkernel?Gabriele Svelto2021/03/16 07:23 AM
                      Microkernel?anon22021/03/16 05:13 PM
                        Microkernel?anon22021/03/16 05:16 PM
                    Microkernel?Gian-Carlo Pascutto2021/03/16 01:40 PM
                      Microkernel?anon22021/03/16 05:53 PM
                        Microkernel?Linus Torvalds2021/03/16 07:25 PM
                          Microkernel?Doug S2021/03/17 09:30 AM
                            Microkernel?Linus Torvalds2021/03/17 10:30 AM
                              Microkernel?Brendan2021/03/17 10:56 PM
                                Microkernel?Michael S2021/03/18 03:47 AM
                                  Microkernel?Brendan2021/03/18 09:07 AM
                              Microkernel?Jose2021/03/18 09:35 AM
                            Microkernel?zArchJon2021/03/18 05:42 PM
                          TransputerRichardC2021/03/17 09:47 AM
                          Microkernel?dmcq2021/03/17 11:15 AM
                            Microkernel?Linus Torvalds2021/03/17 11:59 AM
                              Microkernel?dmcq2021/03/17 12:38 PM
                              Microkernel?Adrian2021/03/17 01:00 PM
                              Microkernel?Ana R. Riano2021/03/18 04:33 AM
                          Microkernel?NvaxPlus2021/03/17 11:48 AM
                            Microkernel?Michael S2021/03/18 03:32 AM
                              Microkernel?Adrian2021/03/18 04:12 AM
                                Microkernel?dmcq2021/03/18 06:30 AM
                                  Microkernel?dmcq2021/03/18 06:55 AM
                                  Microkernel?Adrian2021/03/18 08:35 AM
                                    Microkernel?---2021/03/18 09:49 AM
                                    Microkernel?dmcq2021/03/18 10:59 AM
                                      Microkernel?dmcq2021/03/18 04:09 PM
                              Microkernel?---2021/03/18 09:27 AM
                          Microkernel?Kalle A. Sandström2021/03/20 06:34 AM
                            Microkernel?---2021/03/20 08:35 AM
                            Microkernel?anon22021/03/21 05:29 PM
            Microkernel?dmcq2021/03/15 04:06 AM
              Microkernel?anon22021/03/15 04:59 AM
                Microkernel?dmcq2021/03/15 11:51 AM
                  Microkernel?anon22021/03/15 08:31 PM
                    Microkernel?dmcq2021/03/16 09:17 AM
                      Microkernel?Jukka Larja2021/03/16 11:22 AM
                        Microkernel?dmcq2021/03/16 04:06 PM
                          Microkernel?Jukka Larja2021/03/17 03:42 AM
                            Microkernel?dmcq2021/03/17 07:00 AM
                      Microkernel?anon22021/03/16 05:26 PM
                    Microkernel?---2021/03/16 10:07 AM
            Microkernel?-.-2021/03/15 08:15 PM
              Microkernel?anon22021/03/15 09:18 PM
                Microkernel?Foo_2021/03/16 03:37 AM
                  Read the thread (NT)anon22021/03/16 05:27 PM
                    Already did (NT)Foo_2021/03/17 02:55 AM
                      Already didanon22021/03/17 03:46 AM
                        Already didEtienne Lorrain2021/03/18 02:31 AM
                Microkernel?-.-2021/03/17 05:04 AM
                  Microkernel?Gabriele Svelto2021/03/17 08:53 AM
                    Microkernel?-.-2021/03/17 02:43 PM
              Microkernel?dmcq2021/03/16 08:40 AM
        x86 - why unite when you can fragment?Konrad Schwarz2021/03/17 10:19 AM
    x86 - why unite when you can fragment?anonon2021/03/15 07:37 AM
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