Re: [uml-user] threads in x86_64 UML

2011-08-31 Thread Riccardo Murri
Hello, A final update on this old thread. Good news: thanks to Rick Amos of MathWorks support, this problem has finally been solved. It seems that the issue really lies in the threading mechanism/library used by MatLab compiled code. So the fix is to compile your MatLab code with the "-singleCo

[uml-user] SMP in UML?

2011-08-31 Thread Riccardo Murri
Hi *, a possibly stupid question: is there a way to simulate an SMP Linux machine with UML? I cannot find CONFIG_SMP in "make ARCH=um menuconfig" and running "./linux --help" does not show any relevent option... Regards, Riccardo --

Re: [uml-user] SMP in UML?

2011-08-31 Thread richard -rw- weinberger
On Wed, Aug 31, 2011 at 4:14 PM, Riccardo Murri wrote: > Hi *, > > a possibly stupid question: is there a way to simulate an SMP Linux > machine with UML? > I cannot find CONFIG_SMP in "make ARCH=um menuconfig" and running > "./linux --help" > does not show any relevent option... Sorry, UML does

[uml-user] UML and the buffer cache

2011-08-31 Thread Manfred Haertel, DB3HM
After I access some really (hundreds of MB) large files in UML, my UML system and even the applications on the host get slower and slower. I think this comes from the so-called Linux buffer cache. Linux seems to use all free memory pages for buffering disk pages. This is a good idea in a normal