From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FORGED_GMAIL_RCVD,FREEMAIL_FROM,HTML_MESSAGE, MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 30110 invoked from network); 29 Aug 2023 10:47:07 -0000 Received: from tb-ob0.topicbox.com (64.147.108.117) by inbox.vuxu.org with ESMTPUTF8; 29 Aug 2023 10:47:07 -0000 Received: from tb-mx1.topicbox.com (tb-mx1.nyi.icgroup.com [10.90.30.61]) by tb-ob0.topicbox.com (Postfix) with ESMTP id 8EA573597B for ; Tue, 29 Aug 2023 06:47:05 -0400 (EDT) (envelope-from bounce.mM41147d163677a52982cd7486.r522be890-2105-11eb-b15e-8d699134e1fa@9fans.bounce.topicbox.com) Received: by tb-mx1.topicbox.com (Postfix, from userid 1132) id 8207D2328BB1; Tue, 29 Aug 2023 06:47:05 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed; d=9fans.net; h=from:to :message-id:date:mime-version:content-type :content-transfer-encoding:list-help:list-id:list-post :list-subscribe:reply-to:subject:list-unsubscribe; s=dkim-1; t= 1693306025; x=1693392425; bh=aIUoN0dGR681ab2MkNl7ixhSHh0VsK2o39T TNQusuvM=; b=SSaEJf9GSQDYtmwIZIfHDrQ4w8+Z4NCxkyTMcLV99JDvFSPjKgO qnBnxMWiZ5W7mcsFBRZQcf6ycti626EWC/VYOaTx9gwa6WtWkHCopfC5F0LXelHe MzvC7lOHDj3IPMMh5DTm4wY0hrMuNoI4SAu1Sh5kevJ3DCLJmpQdxPww= From: dusan3sic@gmail.com To: 9fans <9fans@9fans.net> Message-Id: <16933060120.86e7cFDc.27169@composer.9fans.topicbox.com> Date: Tue, 29 Aug 2023 06:46:52 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary=16933060121.FCeD.27169 Content-Transfer-Encoding: 7bit Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 5d44b596-4659-11ee-8f18-70e640decc0b Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UZDBlN2E0ZjczZDFlYWUzYi1NNDExNDdkMTYzNjc3YTUyOTgyY2Q3?= =?UTF-8?B?NDg2Pg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> Subject: [9fans] /dev/realtime doesn't exist? List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M41147d163677a52982cd7486:1:UyjMZG3ZSbzoEI_fsrWf-NMPzIyk1AnaI6KVpFWTNUs --16933060121.FCeD.27169 Date: Tue, 29 Aug 2023 06:46:52 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable I was reading an article about plan9's realtime scheduler edf (http://doc.c= at-v.org/plan_9/real_time/real_time_in_a_real_operating_system/real_time_in= _a_real_operating_system.pdf, page 7), and they mentioned using /dev/realti= me to create realtime processes, but /dev/realtime doesn't exist on my mach= ine (I am using 9front). I found a post here from 07 saying something about= removing it a long time ago, but it got no answers.=20 In proc(3) they mention some commands for configuring realtime processes bu= t I don't know if that is to configure an already made realtime process or = to make one from a regular. How do i make realtime processes in these days? ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Td0e7a4f73d1eae3b-M41147= d163677a52982cd7486 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription --16933060121.FCeD.27169 Date: Tue, 29 Aug 2023 06:46:52 -0400 MIME-Version: 1.0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

I was reading an article about plan9's rea= ltime scheduler edf (h= ttp://doc.cat-v.org/plan_9/real_time/real_time_in_a_real_operating_system/r= eal_time_in_a_real_operating_system.pdf, page 7), and they mentioned us= ing /dev/realtime to create realtime processes, but /dev/realtime doesn'= ;t exist on my machine (I am using 9front). I found a post here from 07 say= ing something about removing it a long time ago, but it got no answers.

In proc(3) they mention some commands for co= nfiguring realtime processes but I don't know if that is to configure a= n already made realtime process or to make one from a regular. How do i mak= e realtime processes in these days?

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helo=mimir.eigenstate.org; client-ip=206.124.132.107 Received: from mimir.eigenstate.org (mimir.eigenstate.org [206.124.132.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by tb-mx1.topicbox.com (Postfix) with ESMTPS for <9fans@9fans.net>; Tue, 29 Aug 2023 13:18:14 -0400 (EDT) (envelope-from ori@eigenstate.org) Received: from abbatoir (pool-108-27-53-161.nycmny.fios.verizon.net [108.27.53.161]) by mimir.eigenstate.org (OpenSMTPD) with ESMTPSA id 9715efc2 (TLSv1.2:ECDHE-RSA-AES256-SHA:256:NO) for <9fans@9fans.net>; Tue, 29 Aug 2023 10:18:11 -0700 (PDT) Message-ID: <15AECCB2DF4CE07D4E8FD30E13EF1598@eigenstate.org> To: 9fans@9fans.net Subject: Re: [9fans] /dev/realtime doesn't exist? Date: Tue, 29 Aug 2023 13:18:09 -0400 From: ori@eigenstate.org In-Reply-To: <16933060120.86e7cFDc.27169@composer.9fans.topicbox.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 0d1fe810-4690-11ee-ab08-88f38d962063 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UZDBlN2E0ZjczZDFlYWUzYi1NZWY2OTUyY2M3N2IyZjE4MTM0ZmJh?= =?UTF-8?B?ZjY2Pg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:Mef6952cc77b2f18134fbaf66:1:cC8DdjbyVUj_LurBynW0HLl7OkGlq9j64Q2qqFs1dLQ Quoth dusan3sic@gmail.com: > I was reading an article about plan9's realtime scheduler edf (http://doc= .cat-v.org/plan_9/real_time/real_time_in_a_real_operating_system/real_time_= in_a_real_operating_system.pdf, page 7), and they mentioned using /dev/real= time to create realtime processes, but /dev/realtime doesn't exist on my ma= chine (I am using 9front). I found a post here from 07 saying something abo= ut removing it a long time ago, but it got no answers.=20 >=20 > In proc(3) they mention some commands for configuring realtime processes = but I don't know if that is to configure an already made realtime process o= r to make one from a regular. How do i make realtime processes in these day= s? it's the bits you found in /proc; there are no (longer?) any special real time processes; any process can become real time by setting up deadlines at any point. /dev/realtime isn't needed any more. unfortunately, I'm not aware of any programs using it. (that may be a good question for the list: where was the real time scheduler used, and does any code using it survive?) ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Td0e7a4f73d1eae3b-Mef695= 2cc77b2f18134fbaf66 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FROM,HTML_MESSAGE,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 13014 invoked from network); 29 Aug 2023 18:27:39 -0000 Received: from tb-ob21.topicbox.com (173.228.157.67) by inbox.vuxu.org with ESMTPUTF8; 29 Aug 2023 18:27:39 -0000 Received: from tb-mx1.topicbox.com (tb-mx1.nyi.icgroup.com [10.90.30.61]) by tb-ob21.topicbox.com (Postfix) with ESMTP id 20005351E3 for ; 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Tue, 29 Aug 2023 11:27:22 -0700 (PDT) MIME-Version: 1.0 References: <16933060120.86e7cFDc.27169@composer.9fans.topicbox.com> <15AECCB2DF4CE07D4E8FD30E13EF1598@eigenstate.org> In-Reply-To: <15AECCB2DF4CE07D4E8FD30E13EF1598@eigenstate.org> From: Charles Forsyth Date: Tue, 29 Aug 2023 19:27:09 +0100 Message-ID: Subject: Re: [9fans] /dev/realtime doesn't exist? To: 9fans <9fans@9fans.net> Content-Type: multipart/alternative; boundary=00000000000039902a060413f610 Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: b657a4dc-4699-11ee-aeb0-8a70bd041680 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UZDBlN2E0ZjczZDFlYWUzYi1NNmI0NjMzMzI2MTVmOWNlNjljZTMy?= =?UTF-8?B?ZDBiPg==?= 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 List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M6b463332615f9ce69ce32d0b:1:Ccgel5bxdo0nV1U5l555iNHzkzsdYNSVO7UHVjr5Z_A --00000000000039902a060413f610 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable There's another paper from an iwp9 http://9p.io/iwp9/Real-time.pdf that might provide more detail On Tue, 29 Aug 2023 at 18:19, wrote: > Quoth dusan3sic@gmail.com: > > I was reading an article about plan9's realtime scheduler edf ( > http://doc.cat-v.org/plan_9/real_time/real_time_in_a_real_operating_syste= m/real_time_in_a_real_operating_system.pdf, > page 7), and they mentioned using /dev/realtime to create realtime > processes, but /dev/realtime doesn't exist on my machine (I am using > 9front). I found a post here from 07 saying something about removing it a > long time ago, but it got no answers. > > > > In proc(3) they mention some commands for configuring realtime processes > but I don't know if that is to configure an already made realtime process > or to make one from a regular. How do i make realtime processes in these > days? >=20 > it's the bits you found in /proc; there are no (longer?) > any special real time processes; any process can become > real time by setting up deadlines at any point. >=20 > /dev/realtime isn't needed any more. >=20 > unfortunately, I'm not aware of any programs using it. >=20 > (that may be a good question for the list: where was the > real time scheduler used, and does any code using it > survive?) >=20 ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Td0e7a4f73d1eae3b-M6b463= 332615f9ce69ce32d0b Delivery options: https://9fans.topicbox.com/groups/9fans/subscription --00000000000039902a060413f610 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

There's another paper from an iwp9 http://9p.io/iwp9/Real-time.pdf that might provide more detail

On Tue, 29 Aug 2023 at 18:19, <ori@eigenstate.org> wrote:

Quoth dusan3sic@gmail.com:
> I was reading an article about plan9's realtime scheduler edf (http://doc.cat-v.org/plan_9/real_time/real_time_in_a_real_opera= ting_system/real_time_in_a_real_operating_system.pdf, page 7), and they= mentioned using /dev/realtime to create realtime processes, but /dev/realt= ime doesn't exist on my machine (I am using 9front). I found a post her= e from 07 saying something about removing it a long time ago, but it got no= answers.
>
> In proc(3) they mention some commands for configuring realtime process= es but I don't know if that is to configure an already made realtime pr= ocess or to make one from a regular. How do i make realtime processes in th= ese days?

it's the bits you found in /proc; there are no (longer?)
any special real time processes; any process can become
real time by setting up deadlines at any point.

/dev/realtime isn't needed any more.

unfortunately, I'm not aware of any programs using it.

(that may be a good question for the list: where was the
real time scheduler used, and does any code using it
survive?)

------------------------------------------
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Tue, 29 Aug 2023 12:45:47 -0700 (PDT) MIME-Version: 1.0 References: <16933060120.86e7cFDc.27169@composer.9fans.topicbox.com> <15AECCB2DF4CE07D4E8FD30E13EF1598@eigenstate.org> In-Reply-To: From: Skip Tavakkolian Date: Tue, 29 Aug 2023 12:45:35 -0700 Message-ID: Subject: Re: [9fans] /dev/realtime doesn't exist? To: 9fans <9fans@9fans.net> Content-Type: multipart/alternative; boundary=000000000000b058400604150e92 Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: aa99fee6-46a4-11ee-b050-a837566079fd Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UZDBlN2E0ZjczZDFlYWUzYi1NYTkzOTBiMDI4M2EyNjhhZjMzYWQ2?= =?UTF-8?B?ZTgyPg==?= 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 List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:Ma9390b0283a268af33ad6e82:1:6KzrkJm6WorzbCJMrbmBEERFUR8jNV1ARl1s4nhYBhs --000000000000b058400604150e92 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable I wrote an example 20 years ago, but couldn't get it to work. I found a copy in this thread: https://9fans.topicbox.com/groups/9fans/T6fea0dd928cee45d-M9987c73da1c5b319= 0e83c561/9fans-trace-c On Tue, Aug 29, 2023, 11:29 AM Charles Forsyth wrote: > There's another paper from an iwp9 http://9p.io/iwp9/Real-time.pdf that > might provide more detail > > On Tue, 29 Aug 2023 at 18:19, wrote: > >> Quoth dusan3sic@gmail.com: >> > I was reading an article about plan9's realtime scheduler edf ( >> http://doc.cat-v.org/plan_9/real_time/real_time_in_a_real_operating_syst= em/real_time_in_a_real_operating_system.pdf, >> page 7), and they mentioned using /dev/realtime to create realtime >> processes, but /dev/realtime doesn't exist on my machine (I am using >> 9front). I found a post here from 07 saying something about removing it a >> long time ago, but it got no answers. >> > >> > In proc(3) they mention some commands for configuring realtime >> processes but I don't know if that is to configure an already made realt= ime >> process or to make one from a regular. How do i make realtime processes = in >> these days? >>=20 >> it's the bits you found in /proc; there are no (longer?) >> any special real time processes; any process can become >> real time by setting up deadlines at any point. >>=20 >> /dev/realtime isn't needed any more. >>=20 >> unfortunately, I'm not aware of any programs using it. >>=20 >> (that may be a good question for the list: where was the >> real time scheduler used, and does any code using it >> survive?) >>=20 > *9fans * / 9fans / see discussions > + participants > + delivery options > Permalink > > ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Td0e7a4f73d1eae3b-Ma9390= b0283a268af33ad6e82 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription --000000000000b058400604150e92 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

I wrote an example 20 years ago, but cou= ldn't get it to work. I found a copy in this thread:

https:= //9fans.topicbox.com/groups/9fans/T6fea0dd928cee45d-M9987c73da1c5b3190e83c5= 61/9fans-trace-c

On Tue, Aug 29, 2= 023, 11:29 AM Charles Forsyth <charles.forsyth@gmail.com> wrote:

There's another paper from an iwp9 = http://9p.io/iwp9/Real-time.pdf that might provide more detail
O= n Tue, 29 Aug 2023 at 18:19, <ori@eigenstate.org> wrote:
Quoth dusan3sic@gmai= l.com:
> I was reading an article about plan9's realtime scheduler edf (http://doc.cat-v.org/plan_9/real_time/real_time_in_a= _real_operating_system/real_time_in_a_real_operating_system.pdf, page 7= ), and they mentioned using /dev/realtime to create realtime processes, but= /dev/realtime doesn't exist on my machine (I am using 9front). I found= a post here from 07 saying something about removing it a long time ago, bu= t it got no answers.
>
> In proc(3) they mention some commands for configuring realtime process= es but I don't know if that is to configure an already made realtime pr= ocess or to make one from a regular. How do i make realtime processes in th= ese days?

it's the bits you found in /proc; there are no (longer?)
any special real time processes; any process can become
real time by setting up deadlines at any point.

/dev/realtime isn't needed any more.

unfortunately, I'm not aware of any programs using it.

(that may be a good question for the list: where was the
real time scheduler used, and does any code using it
survive?)

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