The fragility of your argument

By: Dean Kent (dkent.delete@this.realworldtech.com), May 16, 2007 3:32 am
Room: Moderated Discussions
Ricardo B (ricardo.b@xxxxx.xx) on 5/16/07 wrote:
---------------------------
>>
>Yeah, I think Linus misread you and answered the wrong question.
>The Linux kernel likes to map the entire physical memory into the kernel virtual
>address space and gains simplicity and performance from it.
>However, it also works fine without it.
>

I think from a developer's perspective, presuming everyone *needs* all these resources is understandable, and probably even reasonable. You have to develop for the worst case, and in doing so it likely skews your view of what is 'necessary'. But the average user probably only uses a browser, email and a few other non-memory intensive apps... and even most Linux users probably don't include all (or even most) possible OS services.

Hence my belief that *most* users don't need a 64-bit address space - even if they have 1GB or more of memory installed. At that point the argument becomes "Yeah, but look at how much potential cache they are wasting".

Regards,
Dean
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                        (i)AMD64Max05/09/07 01:28 PM
                          wide86? long86?hobold05/10/07 05:05 AM
                            x87 perhaps, it is one more. :) (NT)Groo05/10/07 05:50 AM
                              x86+Dean Kent05/10/07 08:44 AM
                                Does it really matter?Doug Siebert05/10/07 09:10 AM
                                  let's stay with x86-64 for now, pleaseMarcin Niewiadomski05/10/07 11:50 AM
                                    let's stay with x86-64 for now, pleaseDean Kent05/11/07 06:11 AM
                                      let's stay with x86-64 for now, pleaserwessel05/11/07 02:46 PM
                                        let's stay with x86-64 for now, pleaseDean Kent05/11/07 06:03 PM
                                          let's stay with x86-64 for now, pleaseMichael S05/12/07 10:49 AM
                                            let's stay with x86-64 for now, pleaseDean Kent05/12/07 01:05 PM
                                              let's stay with x86-64 for now, pleaseMichael S05/12/07 01:25 PM
                                                let's stay with x86-64 for now, pleaseDean Kent05/12/07 03:39 PM
                                                  let's stay with x86-64 for now, pleaseJasonB05/13/07 07:43 AM
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                                        What's your point?Linus Torvalds05/11/07 04:15 PM
                                          What's your point?Doug Siebert05/13/07 03:11 PM
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                                              What's your point?JasonB05/14/07 02:06 AM
                                                What's your point?Dean Kent05/14/07 07:20 AM
                                                  What's your point?JasonB05/14/07 04:35 PM
                                                  What's your point?JasonB05/14/07 07:35 PM
                                                    What's your point?Dean Kent05/14/07 08:12 PM
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                                        What's your point?Stephen H05/13/07 01:55 AM
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                                            PAE sucks (Why didn't MS take advantage of PAE?)Linus Torvalds05/13/07 10:20 AM
                                              PAE sucks (Why didn't MS take advantage of PAE?)Dean Kent05/13/07 10:49 AM
                                              PAE sucks (Why didn't MS take advantage of PAE?)David W. Hess05/13/07 12:37 PM
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                                                  > 1 GB RAM on a 32-bit systemJasonB05/13/07 06:37 PM
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                                                        Windows manages memory differentlyTzvetan Mikov05/14/07 08:56 AM
                                                          Windows manages memory differentlyrwessel05/14/07 03:40 PM
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                                                        Windows manages memory differentlyJukka Larja05/14/07 11:30 AM
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                                              PAE sucks (Why didn't MS take advantage of PAE?)Paul05/13/07 03:40 PM
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                                              The fragility of your argumentslacker05/13/07 03:56 PM
                                                The fragility of your argumentnick05/13/07 05:42 PM
                                                The fragility of your argumentHoward Chu05/14/07 02:52 AM
                                                  The fragility of your argumentDean Kent05/14/07 09:19 AM
                                                The fragility of your argumentanon205/14/07 08:26 AM
                                                  The fragility of your argumentTzvetan Mikov05/14/07 09:01 AM
                                                  The fragility of your argumentDean Kent05/14/07 09:16 AM
                                                    The fragility of your argumentLinus Torvalds05/14/07 11:57 AM
                                                      The fragility of your argumentJasonB05/14/07 04:48 PM
                                                        The fragility of your argumentDean Kent05/14/07 07:36 PM
                                                          The fragility of your argumentRicardo B05/16/07 02:40 AM
                                                            The fragility of your argumentDean Kent05/16/07 03:32 AM
                                                              The fragility of your argumentRicardo B05/16/07 06:41 AM
                                                                PSRicardo B05/16/07 06:50 AM
                                                                The fragility of your argumentDean Kent05/16/07 09:07 AM
                                                                  Modern web browsingS. Rao05/16/07 09:16 AM
                                                                    Aha!Dean Kent05/16/07 09:27 AM
                                                                      Aha!Dean Kent05/16/07 09:32 AM
                                                                        Aha!S. Rao05/16/07 10:34 AM
                                                                  The fragility of your argumentRicardo B05/16/07 10:00 AM
                                                      The fragility of your argumentVincent Diepeveen05/16/07 10:10 AM
                                                        The fragility of your argumentPaul05/16/07 03:01 PM
                                                          The fragility of your argumentVincent Diepeveen05/17/07 03:05 AM
                                                    The fragility of your argumentanon205/15/07 01:35 AM
                                                    Splits vs page allocations?Matt Sayler05/15/07 07:33 AM
                                          What's your point?Michael S05/13/07 08:55 AM
                                            What's your point?anonymous05/13/07 11:08 AM
                                              What's your point?Michael S05/13/07 11:31 AM
                                      let's stay with x86-64 for now, pleaseJasonB05/13/07 07:16 AM
                                x864 =) (NT)some105/15/07 03:03 AM
    Rock/Tukwila rumorsIntelUser200005/06/07 02:27 PM
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  Rock/Tukwila rumorsmas05/15/07 09:40 AM
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