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The ~200 Line Linux Kernel Patch That Does Wonders

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  • #76
    something not measured by phoronix test suite

    The Phoronix test suite does not measure this aspect of OS performance (latency of interactive or I/O bound processes/threads when CPU and memory resources are stressed). Such a test would also be a more direct measure of OS performance than the existing Phoronix tests, which mostly measure application performance (and indirectly the compiler that generated the application code). I am surprised that a 20 year old OS is not regularly benchmarked for this kind of performance.

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    • #77
      They removed general dispatcher is that it, and giving CPUs more control, this will show on heavy duty machines.

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      • #78
        Originally posted by crispy View Post
        So now it will actually be practiical to multitask in linux?
        ROFL!

        Have you not been able to do this in Linux, until now? Enterprise Unix have been able to do this for ages. Linux seems immature and have performance problems when doing few things at once. And if you try to do many things at once, Linux will surely have problems - this is called "scales bad".

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        • #79
          Originally posted by unimatrix View Post
          Of course there's the long-standing issue of measuring 'responsiveness'. If Phoronix could somehow do that, it would be a real blessing.
          Maybe run two tests in parallel. Perhaps the kernel compile thingy and at the same time one or more of those gui widgets tests and see how the later performs.

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          • #80
            Originally posted by XorEaxEax View Post
            I know alot of Finnish people speak swedish aswell, is Torvals one of those?
            Yes, he is. Not just "speak swedish as well", but actually their first language is swedish. There are areas in Finland with swedish speaking population and swedish is one of the official languages. But hey, swedes are supposed to know this...

            Man är väl också lite stolt som finlandssvensk över Linus

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            • #81
              Still no AUR script for building and patching the kernel.

              If only I had more time to write one...

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              • #82
                Is there a way to objectively measure desktop/mouse responsiveness?

                This patch has all the hype but how do you quantify the improvement?

                Which benchmark would one use? Is it available through Phoronix already?

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                • #83
                  Is there a way to objectively measure desktop/mouse responsiveness?
                  You could use a high-speed camera (~1000fps) to measure the frames between a mouse-click and the reaction of the desktop (changing the button).

                  This patch has all the hype but how do you quantify the improvement?
                  Do the steps mentioned in the article :

                  Compile a kernel with "make -j64" and start Firefox and a HD-video. Without the patch the system gets totally sluggish. With the patch you can watch the video and use Firefox without any bigger problems.

                  Which benchmark would one use?
                  Trust your own eyes!

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                  • #84
                    Originally posted by kebabbert View Post
                    ROFL!

                    Have you not been able to do this in Linux, until now?
                    I take you're implying Windows? I hope not. Let me just go ahead and say that Linux has always been better at multitasking than Windows. Regressions in Linux are in their own league.

                    I don't know how it compares to Mac OS X or other Unixes.

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                    • #85
                      Originally posted by V!NCENT View Post
                      I take you're implying Windows? I hope not. Let me just go ahead and say that Linux has always been better at multitasking than Windows. Regressions in Linux are in their own league.

                      I don't know how it compares to Mac OS X or other Unixes.
                      Besides, this is NOT about multitasking, it's about responsiveness. An entirely different thing

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                      • #86
                        Originally posted by V!NCENT View Post
                        Haha, that reminds me when I was with my dad when he bought a new computer;
                        PC_store_owner: "Hello. How can I help you?"
                        Dad: "I'm in the market for a new computer."
                        PC_store_owner: "Well we have bla bla bla"
                        Dad: "Just give me the best of the best computer you have"
                        PC_store_owner: "OK, the best computer we have here has x, y, z and a ten megabyte harddisk."
                        Dad: "Ten megabytes, is this the best of the best?"
                        PC_store_onwer: "Sir, ten... megabyte. You'll never get to fill it up".

                        10 megabyte cool , but you should have told your dad to get the AMIGA 1000/500 + A590 20Meg XT/SCSI drive 50 pin internal SCSI header
                        internal 40 pin XT IDE header (8 bit only)
                        http://amiga.resource.cx/exp/a590
                        http://en.wikipedia.org/wiki/Amiga
                        and you could have used Real responsive round robin Multitasking microkernel OS while using LightWave 3D etc..

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                        • #87
                          the User responsiveness of the official AT&T SVR4 Amiga port , Amix one of only a few that got official UNIX sanction, (QSL QNX , you know the one before RTP6, the RIM OS now,being another), wasn't to shabby eather.

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                          • #88
                            Originally posted by unimatrix View Post
                            Well at the time 640K really was enough for anybody.
                            No it wasn't, and only a little later, people where putting 2 meg of fast ram in their A590's etc, and using it to it's fullest to make nice 3D Amiga gen-locked transitions for Video Toaster on their Ami's.

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                            • #89
                              Originally posted by fhuberts View Post
                              Besides, this is NOT about multitasking, it's about responsiveness. An entirely different thing
                              Dude every kernel can multitask. Windows Vista/7/NT6 multitasks primarily by use of mouse focus... Yeah that's right. Check the interview of the Vista kernels devs on Channel9; http://channel9.msdn.com/

                              Maybe I should have said load balancing, although Linux is currently fscking that up in the disk I/O department...

                              If you want responsiveness (I'm guessing UI?) then check out E17.

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                              • #90
                                ppa nagging

                                just tried the liquorix kernel on lucid. boy am i glad that i found the backup of my menu.lst.
                                i will now join the ranks of those nagging for a ppa or at least an ubuntu walkthrough. this patch is way too good to wait for the next distribution to pick it up. just do it for fame.

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