Re: Pentium D support - again

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Hello people!


I don't have success with Pentium D with SMP enable and RT Linux. I=20
tried many configurations: with all family of processors (586 to P4),=20
with and without ACPI, with and without Unsynced TSC, with and without=20
Power Management.


With the family processors of PIII to P4, the system hangs in the moment=20
of the rtl.o is loaded.

With the Pentium Classic, MMX, 586, the system hangs in the regression=20
tests (thread wait times).


I tried all the configurations above with the gcc 3.3.3 and gcc 2.95.4.=20
The results are the same for the both compilers.


After several reboots, I give up! Nowadays, I use the configuration like=20
a previously mentioned above, with P4 Processor family, with ACPI, APM=20
and Unsynced TSC, without SMP and Local APIC. The system works fine now,=20
with success in all regression tests.


I would like to know if the SMP support in RT Linux 3.2-rc1 is broken.=20
Anybody know if is true?

Have some import difference, to RT Linux, if processors are two in the=20
same chip (dual core) or if are two different chips? The behavior of the=20
SMP in this case are different? Some patch is needed?


The main reason to choice the dual core processors is the use of the SMP=20
capacity. If they only can be used in UP mode, I don't find any reason=20
to use it with RT Linux.


The use of the SMP with kernel 2.4.29 patched with RTL3.2-rc1 are=20
possible with the rtlinux are not loaded into kernel. In this case, all=20
functions of the system works fine.


Someone have tested the support to dual core processors in RT Linux?=20
Anyone use the RTL3.2-rc1 with SMP in any way?


Best regards,


--=20

Robson Sales
Desenvolvimento
NETEL - N=C3=BAcleo Empresarial de Tecnologia Eletr=C3=B4nica
Trana Constru=C3=A7=C3=B5es Ltda.
Fone: +55 (85) 3495-6433 R - 223.
Fax: +55 (85) 3495-4661.
e-mail: [email protected] <mailto:[email protected]>


[email protected] escreveu:

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> Today's Topics:
>
>    1.  Pentium D support - again ([email protected])
>    2. Re:  Pentium D support - again ([email protected])
>    3. Re:  Pentium D support - again ([email protected])
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 04 May 2006 16:07:59 -0300
> From: [email protected]
> Subject: [Rtl] Pentium D support - again
> To: RT Linux Mailing List <[email protected]>,	RTLinux GPL Mailing List
> 	<[email protected]>
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset=3DISO-8859-1; format=3Dflowed
>
> Hello to all!
>
> I continue with my tests to use the Pentium D and RT Linux.
>
> I tried the kernel config without Power Management, with Unsynced TSC=20
> support, SMP enable, MTRR enable, 586/K5/5x86/6x86/6x86MX Processor=20
> family selected and ACPI enabled.
>
> With this kernel config, I tried to run the regression test. It stop in=
=20
> thread_time test: the system lock the keyboard and freeze but don't put=
=20
> any messages in console.
>
> In a second time, I tried the kernel config without Power Management,=20
> without Unsynced TSC support, SMP enable, MTRR enable,=20
> 586/K5/5x86/6x86/6x86MX Processor family selected and ACPI enabled. The=
=20
> results are the same of the previous kernel config.
>
> My system:
> kernel: 2.4.29
> gcc: 3.3.3 (release)
> motherboard: Intel D945PLRN (Intel=C2=AE 945P Express Chipset, and ICH7=
=20
> chipset - http://www.intel.com/products/motherboard/d945plrn/index.htm)
> rtlinux: 3.2-rc1
> Processor: Pentium D 2.80GHz
>
> Any help is welcome!
> Sorry by my poor english translation.
>
> Best regards,
>
>  =20




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<html>
<head>
  <meta content=3D"text/html;charset=3DUTF-8" http-equiv=3D"Content-Type"=
>
</head>
<body dir=3D"ltr" bgcolor=3D"#ffffff" text=3D"#000000">
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;">Hello people!<br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;">I don't have success
with Pentium D with SMP enable and RT Linux. I tried many
configurations: with all family of processors (586 to P4), with and
without ACPI, with and without Unsynced TSC, with and without Power
Management.</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;">With the family
processors of PIII to P4, the system hangs in the moment of the rtl.o
is loaded.</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;">With the Pentium
Classic, MMX, 586, the system hangs in the regression tests (thread
wait times).</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;">I tried all the
configurations above with the gcc 3.3.3 and gcc 2.95.4. The results are
the same for the both compilers.</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;">After several reboots,
I give up! Nowadays, I use the configuration like a previously
mentioned above, with P4 Processor family, with ACPI, APM and Unsynced
TSC, without SMP and Local APIC. The system works fine now, with
success in all regression tests. <br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;">I would like to know if
the SMP support in RT Linux 3.2-rc1 is broken. Anybody know if is true?</=
p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;">Have some import
difference, to RT Linux, if processors are two in the same chip (dual
core) or if are two different chips? The behavior of the SMP in this
case are different? Some patch is needed?</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;">The main reason to
choice the dual core processors is the use of the SMP capacity. If they
only can be used in UP mode, I don't find any reason to use it with RT
Linux.</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;">The use of the SMP with
kernel 2.4.29 patched with RTL3.2-rc1 are possible with the rtlinux are
not loaded into kernel. In this case, all functions of the system works
fine.<br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;">Someone have tested the
support to dual core processors in RT Linux? Anyone use the RTL3.2-rc1
with SMP in any way?</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;">Best regards,<br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;">-- <br>
</p>
<div class=3D"moz-signature">
<title>Assinatura Robson</title>
Robson Sales <br>
Desenvolvimento <br>
NETEL - N=C3=BAcleo Empresarial de Tecnologia Eletr=C3=B4nica <br>
Trana Constru=C3=A7=C3=B5es Ltda. <br>
Fone: +55 (85) 3495-6433 R - 223. <br>
Fax: +55 (85) 3495-4661. <br>
e-mail: <a href=3D"mailto:[email protected]">[email protected]=
om.br</a>
<br>
</div>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;"><br>
</p>
<p style=3D"margin-bottom: 0cm; margin-top: 0pt;"><a class=3D"moz-txt-lin=
k-abbreviated" href=3D"mailto:[email protected]">rtl-request@rtlinu=
x.org</a>
escreveu:</p>
<blockquote cite=3D"[email protected]"
 type=3D"cite">
  <pre wrap=3D"">Send Rtl mailing list submissions to
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To subscribe or unsubscribe via the World Wide Web, visit
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When replying, please edit your Subject line so it is more specific
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Today's Topics:

   1.  Pentium D support - again (<a class=3D"moz-txt-link-abbreviated" h=
ref=3D"mailto:[email protected]">[email protected]</a>)
   2. Re:  Pentium D support - again (<a class=3D"moz-txt-link-abbreviate=
d" href=3D"mailto:[email protected]">[email protected]</a>)
   3. Re:  Pentium D support - again (<a class=3D"moz-txt-link-abbreviate=
d" href=3D"mailto:[email protected]">[email protected]</a>)


----------------------------------------------------------------------

Message: 1
Date: Thu, 04 May 2006 16:07:59 -0300
From: <a class=3D"moz-txt-link-abbreviated" href=3D"mailto:[email protected]=
g">[email protected]</a>
Subject: [Rtl] Pentium D support - again
To: RT Linux Mailing List <a class=3D"moz-txt-link-rfc2396E" href=3D"mail=
to:[email protected]">&lt;[email protected]&gt;</a>,	RTLinux GPL Mailing List
	<a class=3D"moz-txt-link-rfc2396E" href=3D"mailto:[email protected]">&lt=
;[email protected]&gt;</a>
Message-ID: <a class=3D"moz-txt-link-rfc2396E" href=3D"mailto:445A510F.10=
[email protected]">&lt;[email protected]&gt;</a>
Content-Type: text/plain; charset=3DISO-8859-1; format=3Dflowed

Hello to all!

I continue with my tests to use the Pentium D and RT Linux.

I tried the kernel config without Power Management, with Unsynced TSC=20
support, SMP enable, MTRR enable, 586/K5/5x86/6x86/6x86MX Processor=20
family selected and ACPI enabled.

With this kernel config, I tried to run the regression test. It stop in=20
thread_time test: the system lock the keyboard and freeze but don't put=20
any messages in console.

In a second time, I tried the kernel config without Power Management,=20
without Unsynced TSC support, SMP enable, MTRR enable,=20
586/K5/5x86/6x86/6x86MX Processor family selected and ACPI enabled. The=20
results are the same of the previous kernel config.

My system:
kernel: 2.4.29
gcc: 3.3.3 (release)
motherboard: Intel D945PLRN (Intel=C2=AE 945P Express Chipset, and ICH7=20
chipset - <a class=3D"moz-txt-link-freetext" href=3D"http://www.intel.com=
/products/motherboard/d945plrn/index.htm">http://www.intel.com/products/m=
otherboard/d945plrn/index.htm</a>)
rtlinux: 3.2-rc1
Processor: Pentium D 2.80GHz

Any help is welcome!
Sorry by my poor english translation.

Best regards,

  </pre>
</blockquote>
<br>
<br>
<div class=3D"moz-signature"><br>
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