5.2.1 SMP problems

[Bill Moran]

"Dave Raven" <dave at raven.za.net> wrote:

> Well all the tests I ran (about 2 memory testers and 2 benchmarks) caused
> the box to die - even the make installs did half the time. Now that I've
> disabled SMP there are no problems, and the same tests are working
> perfectly...
> 
> The only thing I've changed is the SMP support, and now its been running for
> 4 days, before it wouldn't run for 12 hours

You may want to take this problem to hackers@ (with more details about the panic
and the hardware involved - the actual panic message and dmesg output) and see
if anyone is aware of the problem.

Since 5 is in heavy development, it's possible that this problem has already
been dealt with and fixed in 5-CURRENT.  If not, I'm sure the development team
would be interested in your assistance in fixing it.

> 
> Thanks
> Dave
> 
> -----Original Message-----
> From: Albert Shih [mailto:shih at math.jussieu.fr] 
> Sent: 04 June 2004 01:47 PM
> To: Dave Raven
> Cc: freebsd-questions at freebsd.org
> Subject: Re: 5.2.1 SMP problems
> 
> 
>  Le 04/06/2004 à 11:47:14+0200, Dave Raven a écrit
> > Hi all,
> >    Installed 5.2.1 on a high load server - albeit not recommended - and 
> > it was working perfectly with SMP support. It picked up 4 cpu's and 
> > appeared to be using them all. (The box is a dual 2.4gig Xeon machine). 
> > Anyway, the box was as I said under quite a bit of load, and would die 
> > about once a day - just reboot. I looked into it a bit and found 
> > whenever I put more load on (e.g. a make install in ports) it would 
> > panic - vm_load_page or something like that - sorry about being so 
> > vague. Anyway I took out SMP support, and now it boots with 2 cpu's - 
> > one normal Xeon + HT for the second (no idea how to disable that - but I 
> > don't need to)... its been running perfect for 4 days now and I put it 
> > under SERIOUS load.. has anyone else had SMP problems on 5.2.1? I 
> > couldn't find anything about it at first glimpse...
> > 
> 
> Have you shure this problem is with FreeBSD ?
> 
> First check your memory with some software like memtest86
> (http://www.memtest86.com/)
> 
> When I've this kind of problem, always it's because some error in RAM.
> 
> Regards
> 
> 
> 
> --
> Albert SHIH
> Universite de Paris 7 (Denis DIDEROT)
> U.F.R. de Mathematiques.
> Heure local/Local time:
> Fri Jun 4 13:43:52 CEST 2004
> 
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-- 
Bill Moran
Potential Technologies
http://www.potentialtech.com