similar to: 3.2.1+ HVM + HAP + NUMA - Poor Memory Performance

Hi, I have some problems to configure the xen I''ve installed (3.3.1). The computer is a Intel Core 2 Duo, I''m using Ubuntu 8.10 and have linux in my dom0 and winxp pro in my domU. I have two cores and I''d like to set the affinity of dom0 to cpu0 and domU to cpu1 but I haven''t find the way of making this permanent. I''ve set cpus=1 in the domU config

I have an error in my dmesg system log about hpet not correctly enabling: hpet_acpi_add: no address or irqs in _CRS The same kernel without Xen enables it fine: hpet0: at MMIO 0xfed00000 (virtual 0xffffffffff5fe000), IRQs 2, 8, 31 hpet0: 3 32-bit timers, 25000000 Hz hpet_resources: 0xfed00000 is busy Do I have to pass an additional boot option? (ACPI is already enabled) or is there

The subject says it all really, I''m pretty sure the system and bios are NUMA aware but I''m not sure if it''s enabled? Is it supported in 3.2.1 stable? Thanks, Rob \ \/ /___ _ __ |___ / |___ \ / | \ // _ \ ''_ \ |_ \ __) | | | / \ __/ | | | ___) | / __/ _| | /_/\_\___|_| |_| |____(_)_____(_)_| (XEN) Xen version 3.2.1

I was wondering if anyone has managed to get a trusted certificated to work with Xen''s Encrypted VNC and Vencrypt? I can generate my own cert with Certtool and this works but as expected I get warnings from Vencrypt: "Certificate Issuer Unknown" "Certificate Not Trusted" "Hostname Mismatch" After some time working with my Cert provider I have a CA signed

Hi Jan, I asked almost the exact same question as you about 6 months ago and someone provided some Gen4 results for me (But I can''t seem to find them in email), they were a fair bit better than Gen3. With IPOIB, you want connected mode and a large 32Kb+ MTU for max bandwidth, 1Gbyte/sec or more should be possible with Gen 4. Here are some of my original test results on my Opteron

I need to import a VM in OVF format (Using Xen 3.3.0 on Centos 5.2). I found this: http://sourceforge.net/projects/open-ovf/ But don''t really know where to start. Does anyone have any tips? Thanks, Rob The SAQ Group Registered Office: 18 Chapel Street, Petersfield, Hampshire. GU32 3DZ SEMTEC Limited trading as SAQ is Registered in England & Wales Company Number:

Hi Everyone, I''m using a Xen 3.30 on Centos Dom0 setup with two bridges, one for WAN and One for LAN (Both are on separate physical NICs within Dom0). I can use a 2 NIC setup with Server 2003 Pure HVM fine. A single NIC setup works fine with the Pre3 drivers but as soon as I add the second NIC the system hard locks within a few seconds of networking coming up. Both NICs looks fine from

Hi Everyone, I''m trying to bind CPU and memory usage to particular cores using some Quad CPU 16 Core Opterons. They have 64GB RAM, 16 GB per node. It seems that xm info shows it is not working as expected though, below are details for the first node: Name ID Mem VCPUs State Time(s) Domain-0 0 4096 2

Hi everyone, This is my first attempt at a PV guest install from scratch and I''m a tad confused. Have I answered one of the questions virsh-install asks wrongly? Does anyone know of a general guide for installing PV guests with virsh-install? (Most Centos docs seem to use the GUI based virt-manager and I only have command line access). Am I meant to make use of the files here:

Sorry to have so many questions but I seem to have quite a few mini problems with my first Xen setup. My xen server works fine with Powernow on the standard Kernel but with the Xen kernel it fails. Does anyone know why? Details below. With Standard Kernel powernow-k8: Found 2 Quad-Core AMD Opteron(tm) Processor 8350 processors (8 cpu cores) (version 2.20.00) powernow-k8: 0 : fid 0x0

I am trying to get PV drivers running on both Centos 5.1 and Centos 5.3 HVMs, my DomU is Centos 5.2 with Xen 3.31. For 5.1 I install the kmod-xenpv RPM but for 5.3 the drivers seem to be built-in. For the network drivers to work I had to unload the Realtek NIC driver and renamed its .ko files to stop it loading. Adding the Xen-Vnif alias to modprobe.conf then got the PV NICs working nicely (Much

Hi Ola, There was some code done by IBM a few years ago in conjunction with a University that worked and showed the benefits but AFAIK it was never integrated into Xen. The research paper is around on the web. A few of us requested RDMA migration support for version 4.0 and it is at the top of the request list, I suspect it is probably a case of enough people asking and Citrix approving.

I have been using the built in Xen Paravirt NIC drivers for paravirt networking and had bad performance until I disabled all offload setting on the bridge and paravirt nic (From Dom0). There are 2 related questions I have, where should I be tweaking the offload settings, the Dom0 Physical NIC, The Bridge or the DomU NIC? Which settings in particular tend to cause trouble? (I just disabled all of

Hi All, I''m trying to choose between 10Gb Ethernet cards for Xen. The trouble is I''m getting quite confused with all the different terms different companies use to describe NIC''s virtualization support. Any ideas what the differences are between these brands? I am trying to sort a comparison table but will need some help: Feature Intel ET Series Mellanox

Has anyone tried PCI pass-through with this card? Can you pass-through individual ports to different VMs? Thanks, Rob The SAQ Group Registered Office: 18 Chapel Street, Petersfield, Hampshire GU32 3DZ SAQ is the trading name of SEMTEC Limited. Registered in England & Wales Company Number: 06481952 http://www.saqnet.co.uk AS29219 SAQ Group Delivers high quality, honestly priced

I am currently looking at a bug report[1] which is happening when a Xen PVM guest with multiple VCPUs is running a high IO database load (a test script is available in the bug report). In experimenting it seems that this happens (or is getting more likely) when the number of VCPUs is 8 or higher (though I have not tried 6, only 2 and 4), having autogroup enabled seems to make it more likely, too

Hi Everyone, I''m trying to get Xen to use a native DRBD device but it seems it will not create the virtual machine. It does not seem to like the DRBD device type, any ideas on what might be wrong? I''m pretty sure my xen config file is OK and the DRBD device looks fine too. Full details below. xm create centostest Using config file "./centostest".

Also, correct a copy&paste error in the documentation. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> --- This patch has been in the XenServer patch queue for a long time. It is more for debugging purposes than anything else, but is still proving to be valuable for tracking down bugs with HVM paging operations. diff -r 5af4f2ab06f3 -r e6ec5b2b717f

i''m reading up on numa usage. so far, i''ve enabled numa on my Xen box. @ Dom0 i see, xm dmesg | grep -i numa (XEN) Command line: ... numa=on ... (XEN) No NUMA configuration found i guess i need to ''configure'' numa. i''ve no clue how, and haven''t found the docs for it yet, despite looking. i found this old thread,

Hi, I have hybrid smp running with autoxlate. However, without autoxlate, I am running into issues realted to TLB flush. The guest in this case makes multicalls as part of which cache is flushed (__do_update_va_mapping, etc..). However, the guest is using VPIDs and it is getting complicated. I can just xen not do any TLB management and let the guest just do it after return from the hypercall.