similar to: [Patch] Rate-limit timer ISR warning printks

I''ve been looking into bug [1]#195 and I have a couple of questions on how timer interrupts and virqs are handled. Is it possible for dom0 linux to irq balance timer interrupts to different cpus? That is, if xen sends a VIRQ_TIMER to vcpu0, backed by cpu0, is it possible for that interrupt to be handled by vcpu1, backed by cpu1 ? After putting in some debug code in to timer_interrupt

Changeset 6902 Sep 18 13:37:23 inyoureyes kernel: 1: 5077390000000 Sep 18 13:37:23 inyoureyes kernel: Timer ISR/1: Time went backwards: delta=-34786504 cpu_delta=15257914 shadow=5076506780929 off=938478409 processed=50770Sep 18 13:37:23 inyoureyes kernel: 0: 5077480044418 Sep 18 13:37:23 inyoureyes kernel: 1: 5077430000000 Sep 18 13:37:23 inyoureyes kernel: Timer ISR/1: Time went backwards:

It''s everytime when cpufreq_ondemand or cpufreq-set changes the frequency, aprox. 3 messages per event. Is that occasional? I tend to say: no. Please see an excerpt below. And if it''s not occasional, what could I do? And by the way: I found no code that TSC will get adjusted, so I think it will get worse over the time... Thanks, Carsten. messages.0:Jan 9 12:25:15 data kernel:

After installing a Phenom II X4 processor (replacing a single core Semperon) I am getting these messages on the console and in dmesg: Warning Timer ISR/2: Time went backwards: delta=-250135996 delta_cpu=13864004 shadow=1355887856733 off=870052783 processed=1357008044419 cpu_processed=1356744044419 0: 1357004044419 1: 1356696044419 2: 1356744044419 3: 1356696044419 printk: 41 messages

Hi all, We recently upgrade from CentOS 5.8 to CentOS 5.9 on kernel-xen-2.6.18-348.3.1.el5, and after booting into the new kernel, noted large amounts of these messages every second or so in the logs: Mar 30 21:38:35 atlas2 kernel: Warning Timer ISR/0: Time went backwards: delta=-1393683849 delta_cpu=22316151 shadow=225003685197135 off=129240997 processed=225005208029053

I''m running xen 3.0.1 on the 2.6.12-26mdkxen0 mandriva kernel. (x86_64) When I set the serial line using the following configuration, my serial output is truncated as show in http://pastebin.ca/259403 title xen kernel (hd0,0)/xen.gz com1=115200n8 console=com1 xencons=serial module (hd0,0)/vmlinuz-2.6.12-26mdkxen0 root=/dev/sda2 module (hd0,0)/initrd-2.6.12-26mdkxen0.img The system is

Hello, About two months ago I sent this email to the Xen users lists regarding a problem I was having losing some of my serial console output on boot: http://lists.xensource.com/archives/html/xen-users/2011-04/msg00340.html Unfortunately it got no replies. I was just wondering and hoping if any developers could answer the following questions: - Should I open a bug regarding the loss of serial

I''m using a NetBSD 3.1 dom0 with Xen 2.0.7 (so far as I know, the latest supported combination for the NetBSD platform). Linux domUs have their logs fill with messages like this: May 8 02:01:39 debian kernel: Timer ISR: Time went backwards: -316000 131542680000000 9684000 131542690000000 May 8 02:01:39 debian kernel: Timer ISR: Time went backwards: -277000 131542680000000 9723000

Dear All, I''m trying to install Xen on Debian Sarge + testing (halfway updated system). Hardware P-IV, 256M Packages: -------- linux-image-2.6.17-2-xen-686 linux-modules-2.6.17-2-xen-686 xen-docs-3.0 xen-hypervisor-3.0-i386 xen-ioemu-3.0 xen-linux-system-2.6.17-2-xen-686 xen-tools xen-utils-3.0 /boot/grub/menu.lst: -------------------- title Debian Xen 3.0 root

Hello, my name is Viktor. I use kernel-2.6.38.5 as dom0. I can''t get access to console dom0. There is a blank screen after xen-4.1.0.gz loading. But dom0 is loaded and I have got it from ssh and it works fine. I just see nothing at monitor screen. Why? May be I have error in my grub.conf settings, please help! My video card: ATI Technologies Inc M92 [Mobility Radeon HD 4500 Series]

Xen-users, I have what I think is a bug in the serial console interaction of Xen and Ubuntu. Essentially, the serial console appears to work just fine until it is passed off to dom 0 from Xen. Then it stops communicating with dom0, but still communicates with Xen, if I use the control-A escape sequence. Google will not show me anything related to this. I have local RS-232 serial console working

I have problems to get Xen 3.0 working on my notebook (FSC AMILO Pro V3205). I already used different operating systems for the xen0 domain, like FC5, SUSE 10.1 und Debian SID (2.6.16-2-xen-smp) but i always run into the same trouble. When I try to start a xenU domain it always hangs and I get this: ----------------------------------------------------------------------- debian37:~# xm create

Goodmorning building the latest master of XEN d9639236: Ian Campbell, xen: arm: correct return value of raw_copy_{to/from}_guest_*, raw_clear_guest For the Allwinner A20 arm board XEN is giving me this error: WARNING: ignoring attempt to set core boot address 7ff88454 on core -1 WARNING: Not kicking secondary CPUs Starting kernel ... - UART enabled - - CPU 00000000 booting - - Xen starting in

Hey, Does anyone know how I can capture both Xen & Dom0 console output on a "Virtual Serial Port" from HP''s iLO (Integrated Lights-Out) interface? Plain linux is no problem, but combined with Xen it seems to go haywire :-) So far I''ve been combining options and the only thing that actually gave me some output (albeit only the Xen console, not dom0) was this:

I previously sent this help request to xen-api rather than xen-users. My apologies for the re-send. ------------------- I am following http://www.gentoo.org/doc/en/xen-guide.xml to build a new box for use as dom0. For the dom0 kernel configu I used as a basis a previous, working config from a non-xen kernel. That previous kernel (2.6.32-gentoo-r7) exhibits no console video problem. My new xen

Dom0 is Wheezy 64 bit with kernel 3.2.0-1-amd64 version 3.2.4-1, xen from xen-unstable.hg changeset 24823:b75664e53905 plus these patch for not fail build: http://xen.1045712.n5.nabble.com/PATCH-0-of-2-rename-libxl-yajl-gen-alloc-td5469362.html On boot start to load but after start ramdisk load server reboot without message on screen. The grub2 entry is: -----------------------------------------

Package: xen-hypervisor-4.0-amd64 Version: 4.0.1-2 I have a similar problem. Hardware configuration: - IBM x3850 server - 6GB DDR2 RAM - IBM ServeRAID 8i configured to RAID0 - 2x DualCore Xeon processors with HyperThreading. The following options available for CPU: - HyperThreading - Processor Adjacent Selector Prefetch - Processor Hardware Prefetcher - Processor Execute

Hi everyone Ok this is really strange. I''ve been messing around with Xen for the past few weeks on a 32bit test machine and CentOS 5.4 and it''s been working fine. Today I went into the office on a Sunday to install Xen on our server but I had a major problem. The server is a home-build with a Tyan s5211 motherboard with an Intel i3210w chipset CentOS 5.4 64bit installed and

I''m trying to install xen-3.0.4 from source on a debian sarge (3.1r4) box with dual AMD-64 processors (with the new HVM support, although I don''t think that''s got anything to do with the problem). I installed only the packages necessary to compile xen and its kernel(gcc, make, bzip2, bridge-utils, etc). In the source directory, I ran ''make world &&

Package: xen-hypervisor-3.0-i386 Version: 3.0.2+hg9697-2 Severity: grave Justification: renders package unusable Hypervisor reboots system after printing: (XEN) Xen trace buffers: disabled >From what I've found online, Xen should start booting the linux kernel at this point, but never does so. I've booted the hypervisor with the options 'noreboot' and 'sync_console' -