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

--------------------------= ----------------
9fans: 9fans
Perma= link:

https://9= fans.topicbox.com/groups/9fans/T912e4838cb1a371f-M1c8a186c7dd54274a68eac57<= /a>
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charset=UTF-8 Content-Transfer-Encoding: quoted-printable > Plan 9 first edition came out in 1992, at a time when multicore didn't ex= ist, and multicore was released with IBM's Power 4 in 2001.=20 possibly true but multi-cpu boxes where becoming quite popular in the late = 1980s and these have very similar kernel design challenges to multicore arc= hitectures. one of the 1st edition=E2=80=99s target hosts where sgi numa machines (chal= lenge 2s i think) what i am saying is the plan9 kernel supported multiple processors from the= very early days. i wonder if the lost vax kernel supported multiple cpu's (or maybe is was k= enfs only?). Steve ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T912e4838cb1a371f-M75f71= 087ed9a79d6d51074d3 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription --Apple-Mail-CF81A4F3-29D1-44F8-B08F-52162EC19241 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

Plan 9 first edition came = out in 1992, at a time when multicore didn't exist, and multicore was r= eleased with IBM's Power 4 in 2001.

possibly true but multi-cpu boxes where becoming quite popular = in the late 1980s and these have very similar kernel design challenges to m= ulticore architectures.

one of the 1st edition&r= squo;s target hosts where sgi numa machines (challenge 2s i think)