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Mon, 28 Aug 2023 12:33:59 +0000 Date: Mon, 28 Aug 2023 12:32:55 +0000 (UTC) To: 9fans <9fans@9fans.net> Message-ID: <1790306295.1334479.1693225975991@mail.yahoo.com> In-Reply-To: <97EEEC9FA2BC0033BD8DF60DF73416D3@eigenstate.org> References: <16931297570.6681ce.192426@composer.9fans.topicbox.com> <97EEEC9FA2BC0033BD8DF60DF73416D3@eigenstate.org> Subject: Re: [9fans] Plan9 multi-core support MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_1334478_128276291.1693225975990" X-Mailer: WebService/1.1.21763 YMailNorrin Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 2ec8fb7e-459f-11ee-8ed9-ef2941409799 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UOTEyZTQ4MzhjYjFhMzcxZi1NZTM1ODEyOWNmYzEwOThkNzFlNTQ0?= =?UTF-8?B?YjA3Pg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> Content-Transfer-Encoding: 7bit From: "G B via 9fans" <9fans@9fans.net> List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:Me358129cfc1098d71e544b07:1:r8uWr9ZXgg2rqOmHghItI1xN1n_xdQALfO7GrjtkLo0 ------=_Part_1334478_128276291.1693225975990 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Windows and Linux began on single-core single processor machines. Multipro= cessor had been around for some time--IBM's System 360 began using multi-pr= ocessors in 1968--but not for x86. Plan 9 first edition came out in 1992, a= t a time when multicore didn't exist, and multicore was released with IBM's= Power 4 in 2001.=C2=A0 I can see why someone would ask if Plan 9 supports multicore. Plan 9 3rd ed= ition was released in 2000 and 4th edition was released in 2002. In each ca= se, going from single core-single processor to multiprocessor and then from= multiprocessor to multicore would require changes in the operating system = to recognize the extra processors and then the cores. On Sunday, August 27, 2023 at 04:50:50 PM CDT, wro= te:=20=20 =20 Quoth dusan3sic@gmail.com: > I finally read the article about asking questions, sorry if i was being r= ude or was waisting your time, wasn't my intention.=20 people wrote documentation for a reason; sometimes the documentation is confusing, insufficient, or you didn't know the right keyword to look up so you could help yourself; that's ok. but you need to at least try, and give enough information on how you tried so that you can be pointed in the right direction. =20 > And about the multi-core support, well I kinda moved away from it since I= don't really need it, I was just wondering if i can disable it in an easy = way for the measurement I am doing yes; from the plan9.ini manpage, where most boot options are documented: =C2=A0 =C2=A0 =C2=A0 =C2=A0 *nomp=3D =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 A multiprocessor machine will enable all= processors by =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 default.=C2=A0 Setting *nomp restricts t= he kernel to starting =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 only one processor and using the traditi= onal interrupt con- =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 troller. Editing 9fat should be covered in the FQA, in section 7.2: =C2=A0 =C2=A0 =C2=A0 =C2=A0 https://fqa.9front.org/fqa7.html =20=20 ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T912e4838cb1a371f-Me3581= 29cfc1098d71e544b07 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription ------=_Part_1334478_128276291.1693225975990 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Windows and L= inux began on single-core single processor machines. Multiprocessor had bee= n around for some time--IBM's System 360 began using multi-processors i= n 1968--but not for x86. Plan 9 first edition came out in 1992, at a time w= hen multicore didn't exist, and multicore was released with IBM's P= ower 4 in 2001. 

I can see why someone would ask i= f Plan 9 supports multicore. Plan 9 3rd edition was released in 2000 and 4t= h edition was released in 2002. In each case, going from single core-single= processor to multiprocessor and then from multiprocessor to multicore woul= d require changes in the operating system to recognize the extra processors= and then the cores.

On Sunday, August 27, 2023 at 04:50:50 PM CDT, <ori= @eigenstate.org> wrote:


Quoth dusan3sic@gmail.com:
> I finally read the a= rticle about asking questions, sorry if i was being rude or was waisting yo= ur time, wasn't my intention.

people wrote documentation for a reason; sometimes the documentation isconfusing, insufficient, or you didn't know the right= keyword to look up
so you could help yourself; that= 9;s ok.

but you need to at least t= ry, and give enough information on how you tried
so tha= t you can be pointed in the right direction.

> And about the multi-core support, well I kinda moved away = from it since I don't really need it, I was just wondering if i can dis= able it in an easy way for the measurement I am doing
<= br clear=3D"none" />yes; from the plan9.ini manpage, where most boot option= s are documented:

    &n= bsp;   *nomp=3D
         = A multiprocessor machine will enable all processors by
          default.  Setting *nomp restricts = the kernel to starting
        &nbs= p; only one processor and using the traditional interrupt con-
          troller.
Editing 9fat should be covered in the FQA, in section 7.2= :

        h= ttps://fqa.9front.org/fqa7.html


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