Hi, what rebooted Dom0 or DomU? Have you some special need to run kernel 3.4.9, try 3.0.35, I dont have any issue on server with 3.0.x.
Other thing, try to disable swap and run the script. Could be disk problem or bus/controller problem when copying pages from swap. Robert. On Friday 19 of October 2012 18:45:32 Konstantinos Agouros wrote: > hi, > > I am running a Xen host with gentoo sources 3.4.9. I've had issues > that the box cold reboots on me and suspected memory use. Today I > ran the following little perl script: > > my $a = "a" x 1000; > $b = $a x 1000; > > while(1) > { > $b .= $b; > } > > 2 Minutes about 2G swapped out (Dom0 has about 6GB of ram and lots of swap) > and boom cold boot. No panic message on the screen before. > > Anybody has an idea what might be causing this? > > During on of these episodes I ran memtest86 on the box without error. > > CPU is an AMD Phenom 6core. > > Regards, > > Konstantin