Greetings to all,
I am experiencing the same problem - system is getting frozen with "Stuck with TLB IPI
wait on CPU#0" error message. I was trying rtlinux2.0-prepatched with linux2.2.13
kernel on my dual PentiumPro 200MHz system, 256K cache, 128MB RAM, Intel Buckeye
B440FX motherboard, no active SCSI device. Even if no rtl module is loaded, the system
is occasionally getting stuck on TLB wait for a few minutes, then runs again for some
time till next TLB wait and so on (given no Linux activity on the system). Loading rtl
modules (e.g. in frank example with "make test") is freezing the system on TLB wait,
and the system doesn't seem to come back to life in any short term.
I have tried to upgrade to rtlinux2.2 (using rtlinux2.2-prepatched with linux2.2.14
kernel) but the problem is still there. The system is getting frozen on TLB wait even
if no rtl module is loaded and there is no user activity on Linux.
Sorry, have no solution. I am going to try rtai1.2 to check if the problem is in my
hardware.
Sergey.
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: Surya <[EMAIL PROTECTED]>
Cc: RT-Linux <[EMAIL PROTECTED]>
Sent: Thursday, March 30, 2000 5:35 AM
Subject: Re: [rtl] SMP error
>
> Try updating to 2.2. But you can cause this warning with long RT
> interrupt handlers or tasks. The problem is that Linux on CPU_A is
> sending a message to Linux on CPU_B asking it to synchronize on clearing
> the memory management TLB cache. Linux on CPU_A then waits for CPU_B to
> ack. If CPU_B is busy doing some RT activity, it will not ack in time and
> CPU_A will complain. If the warning is causing real problems, tell me and
> I'll fix it: there is a easy fix, but we have not yet put it in.
>
> On Thu, Mar 30, 2000 at 02:09:35AM -0800, Surya wrote:
> > Hi all,
> > This is a repeat of my previous postings, I am still stuck with this
> > problem.... any help/suggestion is highly regarded.
> >
> > My RTLinux (v2.0 + 2.2.13 kernel, Redhat6.1) system is getting stuck
> > with "Stuck with TLB wait on CPU#0" error message. Whereas my normal SMP
> > kernel on 2.2.10 is running properly. I got a couple of replies for my
> > previous posting on SMP support for RTLinux saying that they are running
> > the system successfully on a dual-processor machine. So what is causing
> > this problem? Is it a bug in RTLinux or is it some other problem? Any
> > suggestions. I am using Thunder 2( from Tyan) motherboard, 440LX AGP
> > chipset dual PII 300MHz processors. Should I try another motherboard, if
> > so which one are you using successfully.
> >
> > Thanx in anticipation,
> > Surya.
> >
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>
> --
> ---------------------------------------------------------
> Victor Yodaiken
> FSMLabs: www.fsmlabs.com www.rtlinux.com
> FSMLabs is a servicemark and a service of
> VJY Associates L.L.C, New Mexico.
>
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